Version 2.11.0-187.0.dev
Merge commit 'dbff41c62ccf0182a411d5cad5b4382779a2984b' into 'dev'
diff --git a/DEPS b/DEPS
index a124f6b..6c3060c 100644
--- a/DEPS
+++ b/DEPS
@@ -525,16 +525,6 @@
"dep_type": "cipd",
},
- Var("dart_root") + "/pkg/front_end/testcases/old_dills/dills": {
- "packages": [
- {
- "package": "dart/cfe/dart2js_dills",
- "version": "binary_version:46",
- }
- ],
- "dep_type": "cipd",
- },
-
# TODO(37531): Remove these cipd packages and build with sdk instead when
# benchmark runner gets support for that.
Var("dart_root") + "/benchmarks/FfiBoringssl/native/out/": {
diff --git a/pkg/_fe_analyzer_shared/lib/src/messages/codes_generated.dart b/pkg/_fe_analyzer_shared/lib/src/messages/codes_generated.dart
index 0dc5805..1564994 100644
--- a/pkg/_fe_analyzer_shared/lib/src/messages/codes_generated.dart
+++ b/pkg/_fe_analyzer_shared/lib/src/messages/codes_generated.dart
@@ -3185,6 +3185,14 @@
r"""Null safe libraries are not allowed to export declarations from of opt-out libraries.""");
// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeExportedMain = messageExportedMain;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageExportedMain = const MessageCode("ExportedMain",
+ severity: Severity.context,
+ message: r"""This is exported 'main' declaration.""");
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
const Code<Null> codeExpressionNotMetadata = messageExpressionNotMetadata;
// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
@@ -5977,6 +5985,63 @@
}
// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeMainNotFunctionDeclaration =
+ messageMainNotFunctionDeclaration;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageMainNotFunctionDeclaration = const MessageCode(
+ "MainNotFunctionDeclaration",
+ message: r"""The 'main' declaration must be a function declaration.""");
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeMainNotFunctionDeclarationExported =
+ messageMainNotFunctionDeclarationExported;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageMainNotFunctionDeclarationExported = const MessageCode(
+ "MainNotFunctionDeclarationExported",
+ message:
+ r"""The exported 'main' declaration must be a function declaration.""");
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeMainRequiredNamedParameters =
+ messageMainRequiredNamedParameters;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageMainRequiredNamedParameters = const MessageCode(
+ "MainRequiredNamedParameters",
+ message: r"""The 'main' method cannot have required named parameters.""");
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeMainRequiredNamedParametersExported =
+ messageMainRequiredNamedParametersExported;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageMainRequiredNamedParametersExported = const MessageCode(
+ "MainRequiredNamedParametersExported",
+ message:
+ r"""The exported 'main' method cannot have required named parameters.""");
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeMainTooManyRequiredParameters =
+ messageMainTooManyRequiredParameters;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageMainTooManyRequiredParameters = const MessageCode(
+ "MainTooManyRequiredParameters",
+ message: r"""The 'main' method must have at most 2 required parameters.""");
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeMainTooManyRequiredParametersExported =
+ messageMainTooManyRequiredParametersExported;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageMainTooManyRequiredParametersExported = const MessageCode(
+ "MainTooManyRequiredParametersExported",
+ message:
+ r"""The exported 'main' method must have at most 2 required parameters.""");
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
const Code<Null> codeMapLiteralTypeArgumentMismatch =
messageMapLiteralTypeArgumentMismatch;
diff --git a/pkg/analysis_server/lib/src/context_manager.dart b/pkg/analysis_server/lib/src/context_manager.dart
index b09a113..0a4dbf9 100644
--- a/pkg/analysis_server/lib/src/context_manager.dart
+++ b/pkg/analysis_server/lib/src/context_manager.dart
@@ -22,6 +22,8 @@
import 'package:analyzer/src/generated/sdk.dart';
import 'package:analyzer/src/generated/source.dart';
import 'package:analyzer/src/generated/source_io.dart';
+import 'package:analyzer/src/lint/linter.dart';
+import 'package:analyzer/src/lint/pub.dart';
import 'package:analyzer/src/manifest/manifest_validator.dart';
import 'package:analyzer/src/pubspec/pubspec_validator.dart';
import 'package:analyzer/src/source/package_map_resolver.dart';
@@ -806,6 +808,38 @@
var converter = AnalyzerConverter();
convertedErrors = converter.convertAnalysisErrors(errors,
lineInfo: lineInfo, options: driver.analysisOptions);
+
+ if (driver.analysisOptions.lint) {
+ var visitors = <LintRule, PubspecVisitor>{};
+ for (var linter in driver.analysisOptions.lintRules) {
+ if (linter is LintRule) {
+ var visitor = linter.getPubspecVisitor();
+ if (visitor != null) {
+ visitors[linter] = visitor;
+ }
+ }
+ }
+ if (visitors.isNotEmpty) {
+ var sourceUri = resourceProvider.pathContext.toUri(path);
+ var pubspecAst = Pubspec.parse(content,
+ sourceUrl: sourceUri, resourceProvider: resourceProvider);
+ var listener = RecordingErrorListener();
+ var reporter = ErrorReporter(listener,
+ resourceProvider.getFile(path).createSource(sourceUri),
+ isNonNullableByDefault: false);
+ for (var entry in visitors.entries) {
+ entry.key.reporter = reporter;
+ pubspecAst.accept(entry.value);
+ }
+ if (listener.errors.isNotEmpty) {
+ convertedErrors ??= <protocol.AnalysisError>[];
+ convertedErrors.addAll(converter.convertAnalysisErrors(
+ listener.errors,
+ lineInfo: lineInfo,
+ options: driver.analysisOptions));
+ }
+ }
+ }
}
} catch (exception) {
// If the file cannot be analyzed, fall through to clear any previous
diff --git a/pkg/analysis_server/test/analysis/notification_errors_test.dart b/pkg/analysis_server/test/analysis/notification_errors_test.dart
index 5a67754..aa6c33b 100644
--- a/pkg/analysis_server/test/analysis/notification_errors_test.dart
+++ b/pkg/analysis_server/test/analysis/notification_errors_test.dart
@@ -482,6 +482,54 @@
expect(errors, hasLength(0));
}
+ Future<void> test_pubspecFile_lint() async {
+ var optionsPath = join(projectPath, 'analysis_options.yaml');
+ newFile(optionsPath, content: '''
+linter:
+ rules:
+ - sort_pub_dependencies
+''');
+
+ var filePath = join(projectPath, 'pubspec.yaml');
+ var pubspecFile = newFile(filePath, content: '''
+name: sample
+
+dependencies:
+ b: any
+ a: any
+''').path;
+
+ var setRootsRequest =
+ AnalysisSetAnalysisRootsParams([projectPath], []).toRequest('0');
+ handleSuccessfulRequest(setRootsRequest);
+ await waitForTasksFinished();
+ await pumpEventQueue();
+ //
+ // Verify the error result.
+ //
+ var errors = filesErrors[pubspecFile];
+ expect(errors, hasLength(1));
+ var error = errors[0];
+ expect(error.location.file, filePath);
+ expect(error.severity, AnalysisErrorSeverity.INFO);
+ expect(error.type, AnalysisErrorType.LINT);
+ //
+ // Fix the error and verify the new results.
+ //
+ modifyFile(pubspecFile, '''
+name: sample
+
+dependencies:
+ a: any
+ b: any
+''');
+ await waitForTasksFinished();
+ await pumpEventQueue();
+
+ errors = filesErrors[pubspecFile];
+ expect(errors, hasLength(0));
+ }
+
Future<void> test_StaticWarning() async {
createProject();
addTestFile('''
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_missing_overrides_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_missing_overrides_test.dart
index d397540..1ca73821 100644
--- a/pkg/analysis_server/test/src/services/correction/fix/create_missing_overrides_test.dart
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_missing_overrides_test.dart
@@ -478,6 +478,35 @@
''');
}
+ @FailingTest(issue: 'https://github.com/dart-lang/sdk/issues/43667')
+ Future<void> test_method_withTypedef() async {
+ // This fails because the element representing `Base.closure` has a return
+ // type that has forgotten that it was declared using the typedef `Closure`.
+ await resolveTestUnit('''
+typedef Closure = T Function<T>(T input);
+
+abstract class Base {
+ Closure closure();
+}
+
+class Concrete extends Base {}
+''');
+ await assertHasFix('''
+typedef Closure = T Function<T>(T input);
+
+abstract class Base {
+ Closure closure();
+}
+
+class Concrete extends Base {
+ @override
+ Closure closure() {
+ // TODO: implement closure
+ }
+}
+''');
+ }
+
Future<void> test_methods_reverseOrder() async {
await resolveTestUnit('''
abstract class A {
diff --git a/pkg/analyzer/lib/src/lint/linter.dart b/pkg/analyzer/lib/src/lint/linter.dart
index 2c8a521..abd18b1 100644
--- a/pkg/analyzer/lib/src/lint/linter.dart
+++ b/pkg/analyzer/lib/src/lint/linter.dart
@@ -637,8 +637,7 @@
}
void reportPubLint(PSNode node) {
- Source source = createSource(node.span.sourceUrl);
-
+ var source = node.source;
// Cache error and location info for creating AnalysisErrorInfos
AnalysisError error = AnalysisError(
source, node.span.start.offset, node.span.length, lintCode);
diff --git a/pkg/analyzer/lib/src/lint/pub.dart b/pkg/analyzer/lib/src/lint/pub.dart
index 73efafe..9d5f459 100644
--- a/pkg/analyzer/lib/src/lint/pub.dart
+++ b/pkg/analyzer/lib/src/lint/pub.dart
@@ -4,33 +4,38 @@
import 'dart:collection';
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/src/generated/source.dart';
import 'package:source_span/source_span.dart';
import 'package:yaml/yaml.dart';
-PSEntry _findEntry(YamlMap map, String key) {
+PSEntry _findEntry(YamlMap map, String key, ResourceProvider resourceProvider) {
PSEntry entry;
map.nodes.forEach((k, v) {
if (k is YamlScalar && key == k.toString()) {
- entry = _processScalar(k, v);
+ entry = _processScalar(k, v, resourceProvider);
}
});
return entry;
}
-PSDependencyList _processDependencies(YamlScalar key, YamlNode v) {
+PSDependencyList _processDependencies(
+ YamlScalar key, YamlNode v, ResourceProvider resourceProvider) {
if (v is! YamlMap) {
return null;
}
YamlMap depsMap = v;
- _PSDependencyList deps = _PSDependencyList(_PSNode(key));
+ _PSDependencyList deps = _PSDependencyList(_PSNode(key, resourceProvider));
depsMap.nodes.forEach((k, v) {
- if (k is YamlScalar) deps.add(_PSDependency(k, v));
+ if (k is YamlScalar) deps.add(_PSDependency(k, v, resourceProvider));
});
return deps;
}
-PSGitRepo _processGitRepo(YamlScalar key, YamlNode v) {
+PSGitRepo _processGitRepo(
+ YamlScalar key, YamlNode v, ResourceProvider resourceProvider) {
if (v is! YamlMap) {
return null;
}
@@ -38,13 +43,14 @@
// url: git://github.com/munificent/kittens.git
// ref: some-branch
_PSGitRepo repo = _PSGitRepo();
- repo.token = _PSNode(key);
- repo.ref = _findEntry(hostMap, 'ref');
- repo.url = _findEntry(hostMap, 'url');
+ repo.token = _PSNode(key, resourceProvider);
+ repo.ref = _findEntry(hostMap, 'ref', resourceProvider);
+ repo.url = _findEntry(hostMap, 'url', resourceProvider);
return repo;
}
-PSHost _processHost(YamlScalar key, YamlNode v) {
+PSHost _processHost(
+ YamlScalar key, YamlNode v, ResourceProvider resourceProvider) {
if (v is! YamlMap) {
return null;
}
@@ -52,27 +58,31 @@
// name: transmogrify
// url: http://your-package-server.com
_PSHost host = _PSHost();
- host.token = _PSNode(key);
- host.name = _findEntry(hostMap, 'name');
- host.url = _findEntry(hostMap, 'url');
+ host.token = _PSNode(key, resourceProvider);
+ host.name = _findEntry(hostMap, 'name', resourceProvider);
+ host.url = _findEntry(hostMap, 'url', resourceProvider);
return host;
}
-PSNodeList _processList(YamlScalar key, YamlNode v) {
+PSNodeList _processList(
+ YamlScalar key, YamlNode v, ResourceProvider resourceProvider) {
if (v is! YamlList) {
return null;
}
YamlList nodeList = v;
- return _PSNodeList(_PSNode(key), nodeList.nodes.map((n) => _PSNode(n)));
+ return _PSNodeList(_PSNode(key, resourceProvider),
+ nodeList.nodes.map((n) => _PSNode(n, resourceProvider)));
}
-PSEntry _processScalar(YamlScalar key, YamlNode value) {
+PSEntry _processScalar(
+ YamlScalar key, YamlNode value, ResourceProvider resourceProvider) {
if (value is! YamlScalar) {
return null;
//WARN?
}
- return PSEntry(_PSNode(key), _PSNode(value));
+ return PSEntry(
+ _PSNode(key, resourceProvider), _PSNode(value, resourceProvider));
}
abstract class PSDependency {
@@ -107,6 +117,7 @@
}
abstract class PSNode {
+ Source get source;
SourceSpan get span;
String get text;
}
@@ -118,8 +129,10 @@
}
abstract class Pubspec {
- factory Pubspec.parse(String source, {Uri sourceUrl}) =>
- _Pubspec(source, sourceUrl: sourceUrl);
+ factory Pubspec.parse(String source,
+ {Uri sourceUrl, ResourceProvider resourceProvider}) =>
+ _Pubspec(source,
+ sourceUrl: sourceUrl, resourceProvider: resourceProvider);
PSEntry get author;
PSNodeList get authors;
PSDependencyList get dependencies;
@@ -161,14 +174,15 @@
@override
PSGitRepo git;
- factory _PSDependency(YamlScalar key, YamlNode value) {
+ factory _PSDependency(
+ YamlScalar key, YamlNode value, ResourceProvider resourceProvider) {
_PSDependency dep = _PSDependency._();
- dep.name = _PSNode(key);
+ dep.name = _PSNode(key, resourceProvider);
if (value is YamlScalar) {
// Simple version
- dep.version = PSEntry(null, _PSNode(value));
+ dep.version = PSEntry(null, _PSNode(value, resourceProvider));
} else if (value is YamlMap) {
// hosted:
// name: transmogrify
@@ -182,16 +196,16 @@
YamlScalar key = k;
switch (key.toString()) {
case 'path':
- dep.path = _processScalar(key, v);
+ dep.path = _processScalar(key, v, resourceProvider);
break;
case 'version':
- dep.version = _processScalar(key, v);
+ dep.version = _processScalar(key, v, resourceProvider);
break;
case 'hosted':
- dep.host = _processHost(key, v);
+ dep.host = _processHost(key, v, resourceProvider);
break;
case 'git':
- dep.git = _processGitRepo(key, v);
+ dep.git = _processGitRepo(key, v, resourceProvider);
break;
}
});
@@ -279,11 +293,18 @@
@override
final SourceSpan span;
- _PSNode(YamlNode node)
+ final ResourceProvider resourceProvider;
+
+ _PSNode(YamlNode node, this.resourceProvider)
: text = node.value?.toString(),
span = node.span;
@override
+ Source get source => (resourceProvider ?? PhysicalResourceProvider.INSTANCE)
+ .getFile(span.sourceUrl.toFilePath())
+ .createSource(span.sourceUrl);
+
+ @override
String toString() => '$text';
}
@@ -325,9 +346,9 @@
@override
PSDependencyList dependencyOverrides;
- _Pubspec(String src, {Uri sourceUrl}) {
+ _Pubspec(String src, {Uri sourceUrl, ResourceProvider resourceProvider}) {
try {
- _parse(src, sourceUrl: sourceUrl);
+ _parse(src, sourceUrl: sourceUrl, resourceProvider: resourceProvider);
} on Exception {
// ignore
}
@@ -385,7 +406,7 @@
return sb.toString();
}
- void _parse(String src, {Uri sourceUrl}) {
+ void _parse(String src, {Uri sourceUrl, ResourceProvider resourceProvider}) {
var yaml = loadYamlNode(src, sourceUrl: sourceUrl);
if (yaml is! YamlMap) {
return;
@@ -398,34 +419,34 @@
YamlScalar key = k;
switch (key.toString()) {
case 'author':
- author = _processScalar(key, v);
+ author = _processScalar(key, v, resourceProvider);
break;
case 'authors':
- authors = _processList(key, v);
+ authors = _processList(key, v, resourceProvider);
break;
case 'homepage':
- homepage = _processScalar(key, v);
+ homepage = _processScalar(key, v, resourceProvider);
break;
case 'name':
- name = _processScalar(key, v);
+ name = _processScalar(key, v, resourceProvider);
break;
case 'description':
- description = _processScalar(key, v);
+ description = _processScalar(key, v, resourceProvider);
break;
case 'documentation':
- documentation = _processScalar(key, v);
+ documentation = _processScalar(key, v, resourceProvider);
break;
case 'dependencies':
- dependencies = _processDependencies(key, v);
+ dependencies = _processDependencies(key, v, resourceProvider);
break;
case 'dev_dependencies':
- devDependencies = _processDependencies(key, v);
+ devDependencies = _processDependencies(key, v, resourceProvider);
break;
case 'dependency_overrides':
- dependencyOverrides = _processDependencies(key, v);
+ dependencyOverrides = _processDependencies(key, v, resourceProvider);
break;
case 'version':
- version = _processScalar(key, v);
+ version = _processScalar(key, v, resourceProvider);
break;
}
});
diff --git a/pkg/analyzer/lib/src/task/options.dart b/pkg/analyzer/lib/src/task/options.dart
index bbef02e..0aaf16d 100644
--- a/pkg/analyzer/lib/src/task/options.dart
+++ b/pkg/analyzer/lib/src/task/options.dart
@@ -48,7 +48,7 @@
];
errors.add(AnalysisError(
initialSource,
- initialIncludeSpan.start.column + 1,
+ initialIncludeSpan.start.offset,
initialIncludeSpan.length,
AnalysisOptionsWarningCode.INCLUDED_FILE_WARNING,
args));
@@ -68,7 +68,7 @@
if (includedSource == null || !includedSource.exists()) {
errors.add(AnalysisError(
initialSource,
- initialIncludeSpan.start.column + 1,
+ initialIncludeSpan.start.offset,
initialIncludeSpan.length,
AnalysisOptionsWarningCode.INCLUDE_FILE_NOT_FOUND,
[includeUri, source.fullName]));
@@ -89,7 +89,7 @@
// on the include directive located in the initial options file.
errors.add(AnalysisError(
initialSource,
- initialIncludeSpan.start.column + 1,
+ initialIncludeSpan.start.offset,
initialIncludeSpan.length,
AnalysisOptionsErrorCode.INCLUDED_FILE_PARSE_ERROR,
args));
@@ -101,7 +101,7 @@
validate(source, options);
} on OptionsFormatException catch (e) {
SourceSpan span = e.span;
- errors.add(AnalysisError(source, span.start.column + 1, span.length,
+ errors.add(AnalysisError(source, span.start.offset, span.length,
AnalysisOptionsErrorCode.PARSE_ERROR, [e.message]));
}
return errors;
diff --git a/pkg/analyzer/test/src/diagnostics/analysis_options/analysis_options_test_support.dart b/pkg/analyzer/test/src/diagnostics/analysis_options/analysis_options_test_support.dart
new file mode 100644
index 0000000..c510595
--- /dev/null
+++ b/pkg/analyzer/test/src/diagnostics/analysis_options/analysis_options_test_support.dart
@@ -0,0 +1,30 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:_fe_analyzer_shared/src/base/errors.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/task/options.dart';
+
+import '../../../generated/test_support.dart';
+
+class AbstractAnalysisOptionsTest {
+ Future<void> assertErrorsInCode(
+ String code, List<ExpectedError> expectedErrors) async {
+ var diagnostics =
+ analyzeAnalysisOptions(TestSource(), code, SourceFactory([]));
+ var errorListener = GatheringErrorListener();
+ errorListener.addAll(diagnostics);
+ errorListener.assertErrors(expectedErrors);
+ }
+
+ ExpectedError error(ErrorCode code, int offset, int length,
+ {String text,
+ Pattern messageContains,
+ List<ExpectedContextMessage> contextMessages =
+ const <ExpectedContextMessage>[]}) =>
+ ExpectedError(code, offset, length,
+ message: text,
+ messageContains: messageContains,
+ expectedContextMessages: contextMessages);
+}
diff --git a/pkg/analyzer/test/src/diagnostics/analysis_options/include_file_not_found.dart b/pkg/analyzer/test/src/diagnostics/analysis_options/include_file_not_found.dart
new file mode 100644
index 0000000..976fc62
--- /dev/null
+++ b/pkg/analyzer/test/src/diagnostics/analysis_options/include_file_not_found.dart
@@ -0,0 +1,24 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/src/analysis_options/error/option_codes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'analysis_options_test_support.dart';
+
+main() {
+ defineReflectiveSuite(() {
+ defineReflectiveTests(IncludeFileNotFoundTest);
+ });
+}
+
+@reflectiveTest
+class IncludeFileNotFoundTest extends AbstractAnalysisOptionsTest {
+ void test_notFound() {
+ assertErrorsInCode('''
+# We don't depend on pedantic, but we should consider adding it.
+include: package:pedantic/analysis_options.yaml
+''', [error(AnalysisOptionsWarningCode.INCLUDE_FILE_NOT_FOUND, 74, 38)]);
+ }
+}
diff --git a/pkg/front_end/lib/src/fasta/fasta_codes_cfe_generated.dart b/pkg/front_end/lib/src/fasta/fasta_codes_cfe_generated.dart
index 7be84f7..480cc47 100644
--- a/pkg/front_end/lib/src/fasta/fasta_codes_cfe_generated.dart
+++ b/pkg/front_end/lib/src/fasta/fasta_codes_cfe_generated.dart
@@ -2120,6 +2120,80 @@
// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
const Template<
+ Message Function(
+ DartType _type, DartType _type2, bool isNonNullableByDefault)>
+ templateMainWrongParameterType = const Template<
+ Message Function(
+ DartType _type, DartType _type2, bool isNonNullableByDefault)>(
+ messageTemplate:
+ r"""The type '#type' of the first parameter of the 'main' method is not a supertype of '#type2'.""",
+ withArguments: _withArgumentsMainWrongParameterType);
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<
+ Message Function(
+ DartType _type, DartType _type2, bool isNonNullableByDefault)>
+ codeMainWrongParameterType = const Code<
+ Message Function(
+ DartType _type, DartType _type2, bool isNonNullableByDefault)>(
+ "MainWrongParameterType",
+ templateMainWrongParameterType,
+);
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+Message _withArgumentsMainWrongParameterType(
+ DartType _type, DartType _type2, bool isNonNullableByDefault) {
+ TypeLabeler labeler = new TypeLabeler(isNonNullableByDefault);
+ List<Object> typeParts = labeler.labelType(_type);
+ List<Object> type2Parts = labeler.labelType(_type2);
+ String type = typeParts.join();
+ String type2 = type2Parts.join();
+ return new Message(codeMainWrongParameterType,
+ message:
+ """The type '${type}' of the first parameter of the 'main' method is not a supertype of '${type2}'.""" +
+ labeler.originMessages,
+ arguments: {'type': _type, 'type2': _type2});
+}
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Template<
+ Message Function(
+ DartType _type, DartType _type2, bool isNonNullableByDefault)>
+ templateMainWrongParameterTypeExported = const Template<
+ Message Function(
+ DartType _type, DartType _type2, bool isNonNullableByDefault)>(
+ messageTemplate:
+ r"""The type '#type' of the first parameter of the exported 'main' method is not a supertype of '#type2'.""",
+ withArguments: _withArgumentsMainWrongParameterTypeExported);
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<
+ Message Function(
+ DartType _type, DartType _type2, bool isNonNullableByDefault)>
+ codeMainWrongParameterTypeExported = const Code<
+ Message Function(
+ DartType _type, DartType _type2, bool isNonNullableByDefault)>(
+ "MainWrongParameterTypeExported",
+ templateMainWrongParameterTypeExported,
+);
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+Message _withArgumentsMainWrongParameterTypeExported(
+ DartType _type, DartType _type2, bool isNonNullableByDefault) {
+ TypeLabeler labeler = new TypeLabeler(isNonNullableByDefault);
+ List<Object> typeParts = labeler.labelType(_type);
+ List<Object> type2Parts = labeler.labelType(_type2);
+ String type = typeParts.join();
+ String type2 = type2Parts.join();
+ return new Message(codeMainWrongParameterTypeExported,
+ message:
+ """The type '${type}' of the first parameter of the exported 'main' method is not a supertype of '${type2}'.""" +
+ labeler.originMessages,
+ arguments: {'type': _type, 'type2': _type2});
+}
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Template<
Message Function(DartType _type, DartType _type2, DartType _type3,
bool isNonNullableByDefault)>
templateMixinApplicationIncompatibleSupertype = const Template<
diff --git a/pkg/front_end/lib/src/fasta/incremental_compiler.dart b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
index c1dd176..2cfabbe 100644
--- a/pkg/front_end/lib/src/fasta/incremental_compiler.dart
+++ b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
@@ -13,6 +13,7 @@
CanonicalNameError,
CanonicalNameSdkError,
CompilationModeError,
+ InvalidKernelSdkVersionError,
InvalidKernelVersionError,
SubComponentView;
@@ -1014,6 +1015,7 @@
bytesLength = prepareSummary(summaryBytes, uriTranslator, c, data);
if (e is InvalidKernelVersionError ||
+ e is InvalidKernelSdkVersionError ||
e is PackageChangedError ||
e is CanonicalNameSdkError ||
e is CompilationModeError) {
diff --git a/pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart b/pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart
index d9d852a..d799e39 100644
--- a/pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/constant_evaluator.dart
@@ -1043,7 +1043,23 @@
}
}
} else {
+ bool sentinelInserted = false;
+ if (nodeCache.containsKey(node)) {
+ if (nodeCache[node] == null) {
+ // recursive call
+ return createErrorConstant(node, messageConstEvalCircularity);
+ }
+ // else we've seen the node before and come to a result -> we won't
+ // go into an infinite loop here either.
+ } else {
+ // We haven't seen this node before. Risk of loop.
+ nodeCache[node] = null;
+ sentinelInserted = true;
+ }
result = node.accept(this);
+ if (sentinelInserted) {
+ nodeCache.remove(node);
+ }
if (result is AbortConstant) {
return result;
}
diff --git a/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart b/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
index ea4e30f..19f16db 100644
--- a/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
@@ -360,6 +360,7 @@
loader.buildOutlineExpressions(loader.coreTypes);
loader.checkTypes();
loader.checkRedirectingFactories(myClasses);
+ loader.checkMainMethods();
_updateDelayedParameterTypes();
installAllComponentProblems(loader.allComponentProblems);
loader.allComponentProblems.clear();
diff --git a/pkg/front_end/lib/src/fasta/source/source_loader.dart b/pkg/front_end/lib/src/fasta/source/source_loader.dart
index b47a385..23761f4 100644
--- a/pkg/front_end/lib/src/fasta/source/source_loader.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_loader.dart
@@ -41,6 +41,7 @@
Library,
LibraryDependency,
Nullability,
+ Procedure,
ProcedureKind,
Reference,
Supertype,
@@ -54,6 +55,8 @@
import 'package:kernel/reference_from_index.dart' show ReferenceFromIndex;
+import 'package:kernel/type_environment.dart';
+
import 'package:package_config/package_config.dart';
import '../../api_prototype/file_system.dart';
@@ -71,6 +74,7 @@
import '../builder/enum_builder.dart';
import '../builder/extension_builder.dart';
import '../builder/field_builder.dart';
+import '../builder/invalid_type_declaration_builder.dart';
import '../builder/library_builder.dart';
import '../builder/member_builder.dart';
import '../builder/named_type_builder.dart';
@@ -81,31 +85,7 @@
import '../export.dart' show Export;
-import '../fasta_codes.dart'
- show
- Message,
- SummaryTemplate,
- Template,
- messageObjectExtends,
- messageObjectImplements,
- messageObjectMixesIn,
- messagePartOrphan,
- messageStrongModeNNBDButOptOut,
- messageTypedefCause,
- messageTypedefUnaliasedTypeCause,
- noLength,
- templateAmbiguousSupertypes,
- templateCantReadFile,
- templateCyclicClassHierarchy,
- templateExtendingEnum,
- templateExtendingRestricted,
- templateIllegalMixin,
- templateIllegalMixinDueToConstructors,
- templateIllegalMixinDueToConstructorsCause,
- templateInternalProblemUriMissingScheme,
- templateSourceOutlineSummary,
- templateStrongModeNNBDPackageOptOut,
- templateUntranslatableUri;
+import '../fasta_codes.dart';
import '../kernel/kernel_builder.dart'
show ClassHierarchyBuilder, ClassMember, DelayedOverrideCheck;
@@ -154,8 +134,9 @@
ReferenceFromIndex referenceFromIndex;
/// Used when building directly to kernel.
- ClassHierarchy hierarchy;
+ ClassHierarchy _hierarchy;
CoreTypes _coreTypes;
+ TypeEnvironment _typeEnvironment;
/// For builders created with a reference, this maps from that reference to
/// that builder. This is used for looking up source builders when finalizing
@@ -199,6 +180,19 @@
return _coreTypes;
}
+ ClassHierarchy get hierarchy => _hierarchy;
+
+ void set hierarchy(ClassHierarchy value) {
+ if (_hierarchy != value) {
+ _hierarchy = value;
+ _typeEnvironment = null;
+ }
+ }
+
+ TypeEnvironment get typeEnvironment {
+ return _typeEnvironment ??= new TypeEnvironment(coreTypes, hierarchy);
+ }
+
Template<SummaryTemplate> get outlineSummaryTemplate =>
templateSourceOutlineSummary;
@@ -1232,6 +1226,134 @@
isTopLevel: isTopLevel);
}
+ void checkMainMethods() {
+ DartType listOfString;
+
+ builders.forEach((Uri uri, LibraryBuilder libraryBuilder) {
+ if (libraryBuilder.loader == this &&
+ libraryBuilder.isNonNullableByDefault) {
+ Builder mainBuilder =
+ libraryBuilder.exportScope.lookupLocalMember('main', setter: false);
+ mainBuilder ??=
+ libraryBuilder.exportScope.lookupLocalMember('main', setter: true);
+ if (mainBuilder is MemberBuilder) {
+ if (mainBuilder is InvalidTypeDeclarationBuilder) {
+ // This is an ambiguous export, skip the check.
+ return;
+ }
+ if (mainBuilder.isField ||
+ mainBuilder.isGetter ||
+ mainBuilder.isSetter) {
+ if (mainBuilder.parent != libraryBuilder) {
+ libraryBuilder.addProblem(
+ messageMainNotFunctionDeclarationExported,
+ libraryBuilder.charOffset,
+ noLength,
+ libraryBuilder.fileUri,
+ context: [
+ messageExportedMain.withLocation(mainBuilder.fileUri,
+ mainBuilder.charOffset, mainBuilder.name.length)
+ ]);
+ } else {
+ libraryBuilder.addProblem(
+ messageMainNotFunctionDeclaration,
+ mainBuilder.charOffset,
+ mainBuilder.name.length,
+ mainBuilder.fileUri);
+ }
+ } else {
+ Procedure procedure = mainBuilder.member;
+ if (procedure.function.requiredParameterCount > 2) {
+ if (mainBuilder.parent != libraryBuilder) {
+ libraryBuilder.addProblem(
+ messageMainTooManyRequiredParametersExported,
+ libraryBuilder.charOffset,
+ noLength,
+ libraryBuilder.fileUri,
+ context: [
+ messageExportedMain.withLocation(mainBuilder.fileUri,
+ mainBuilder.charOffset, mainBuilder.name.length)
+ ]);
+ } else {
+ libraryBuilder.addProblem(
+ messageMainTooManyRequiredParameters,
+ mainBuilder.charOffset,
+ mainBuilder.name.length,
+ mainBuilder.fileUri);
+ }
+ } else if (procedure.function.namedParameters
+ .any((parameter) => parameter.isRequired)) {
+ if (mainBuilder.parent != libraryBuilder) {
+ libraryBuilder.addProblem(
+ messageMainRequiredNamedParametersExported,
+ libraryBuilder.charOffset,
+ noLength,
+ libraryBuilder.fileUri,
+ context: [
+ messageExportedMain.withLocation(mainBuilder.fileUri,
+ mainBuilder.charOffset, mainBuilder.name.length)
+ ]);
+ } else {
+ libraryBuilder.addProblem(
+ messageMainRequiredNamedParameters,
+ mainBuilder.charOffset,
+ mainBuilder.name.length,
+ mainBuilder.fileUri);
+ }
+ } else if (procedure.function.positionalParameters.length > 0) {
+ DartType parameterType =
+ procedure.function.positionalParameters.first.type;
+
+ listOfString ??= new InterfaceType(
+ coreTypes.listClass,
+ Nullability.nonNullable,
+ [coreTypes.stringNonNullableRawType]);
+
+ if (!typeEnvironment.isSubtypeOf(listOfString, parameterType,
+ SubtypeCheckMode.withNullabilities)) {
+ if (mainBuilder.parent != libraryBuilder) {
+ libraryBuilder.addProblem(
+ templateMainWrongParameterTypeExported.withArguments(
+ parameterType,
+ listOfString,
+ libraryBuilder.isNonNullableByDefault),
+ libraryBuilder.charOffset,
+ noLength,
+ libraryBuilder.fileUri,
+ context: [
+ messageExportedMain.withLocation(mainBuilder.fileUri,
+ mainBuilder.charOffset, mainBuilder.name.length)
+ ]);
+ } else {
+ libraryBuilder.addProblem(
+ templateMainWrongParameterType.withArguments(
+ parameterType,
+ listOfString,
+ libraryBuilder.isNonNullableByDefault),
+ mainBuilder.charOffset,
+ mainBuilder.name.length,
+ mainBuilder.fileUri);
+ }
+ }
+ }
+ }
+ } else if (mainBuilder != null) {
+ if (mainBuilder.parent != libraryBuilder) {
+ libraryBuilder.addProblem(messageMainNotFunctionDeclarationExported,
+ libraryBuilder.charOffset, noLength, libraryBuilder.fileUri,
+ context: [
+ messageExportedMain.withLocation(
+ mainBuilder.fileUri, mainBuilder.charOffset, noLength)
+ ]);
+ } else {
+ libraryBuilder.addProblem(messageMainNotFunctionDeclaration,
+ mainBuilder.charOffset, noLength, mainBuilder.fileUri);
+ }
+ }
+ }
+ });
+ }
+
void releaseAncillaryResources() {
hierarchy = null;
builderHierarchy = null;
diff --git a/pkg/front_end/messages.status b/pkg/front_end/messages.status
index b2b3147..c083e2c 100644
--- a/pkg/front_end/messages.status
+++ b/pkg/front_end/messages.status
@@ -466,6 +466,18 @@
LibraryDirectiveNotFirst/script3: Fail
ListLiteralTooManyTypeArguments/example: Fail
LoadLibraryTakesNoArguments/example: Fail
+MainNotFunctionDeclaration/analyzerCode: Fail
+MainNotFunctionDeclarationExported/analyzerCode: Fail
+MainNotFunctionDeclarationExported/part_wrapped_script: Fail
+MainRequiredNamedParameters/analyzerCode: Fail
+MainRequiredNamedParametersExported/analyzerCode: Fail
+MainRequiredNamedParametersExported/part_wrapped_script: Fail
+MainTooManyRequiredParameters/analyzerCode: Fail
+MainTooManyRequiredParametersExported/analyzerCode: Fail
+MainTooManyRequiredParametersExported/part_wrapped_script: Fail
+MainWrongParameterType/analyzerCode: Fail
+MainWrongParameterTypeExported/analyzerCode: Fail
+MainWrongParameterTypeExported/part_wrapped_script: Fail
MapLiteralTypeArgumentMismatch/example: Fail
MetadataTypeArguments/example: Fail
MethodNotFound/example: Fail
diff --git a/pkg/front_end/messages.yaml b/pkg/front_end/messages.yaml
index 4e76c8b..d182347 100644
--- a/pkg/front_end/messages.yaml
+++ b/pkg/front_end/messages.yaml
@@ -4348,3 +4348,71 @@
NeverValueWarning:
template: "The expression can not result in a value with sound null safety because the expression type is `Never`."
severity: WARNING
+
+MainNotFunctionDeclaration:
+ template: "The 'main' declaration must be a function declaration."
+ configuration: nnbd-strong
+ script:
+ - var main;
+
+MainNotFunctionDeclarationExported:
+ template: "The exported 'main' declaration must be a function declaration."
+ configuration: nnbd-strong
+ exampleAllowMoreCodes: true
+ script:
+ main.dart:
+ export 'lib.dart';
+ lib.dart:
+ var main;
+
+MainTooManyRequiredParameters:
+ template: "The 'main' method must have at most 2 required parameters."
+ configuration: nnbd-strong
+ script:
+ - main(a, b, c) {}
+
+MainTooManyRequiredParametersExported:
+ template: "The exported 'main' method must have at most 2 required parameters."
+ configuration: nnbd-strong
+ exampleAllowMoreCodes: true
+ script:
+ main.dart:
+ export 'lib.dart';
+ lib.dart:
+ main(a, b, c) {}
+
+MainRequiredNamedParameters:
+ template: "The 'main' method cannot have required named parameters."
+ configuration: nnbd-strong
+ script:
+ - main({required a}) {}
+
+MainRequiredNamedParametersExported:
+ template: "The exported 'main' method cannot have required named parameters."
+ configuration: nnbd-strong
+ exampleAllowMoreCodes: true
+ script:
+ main.dart:
+ export 'lib.dart';
+ lib.dart:
+ main({required a}) {}
+
+MainWrongParameterType:
+ template: "The type '#type' of the first parameter of the 'main' method is not a supertype of '#type2'."
+ configuration: nnbd-strong
+ script:
+ - main(Set<String> args) {}
+
+MainWrongParameterTypeExported:
+ template: "The type '#type' of the first parameter of the exported 'main' method is not a supertype of '#type2'."
+ configuration: nnbd-strong
+ exampleAllowMoreCodes: true
+ script:
+ main.dart:
+ export 'lib.dart';
+ lib.dart:
+ main(Set<String> args) {}
+
+ExportedMain:
+ template: "This is exported 'main' declaration."
+ severity: CONTEXT
diff --git a/pkg/front_end/test/old_dill_suite.dart b/pkg/front_end/test/old_dill_suite.dart
deleted file mode 100644
index c48c30b..0000000
--- a/pkg/front_end/test/old_dill_suite.dart
+++ /dev/null
@@ -1,141 +0,0 @@
-// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:async' show Future;
-
-import 'dart:io';
-
-import 'package:kernel/binary/tag.dart' show Tag;
-
-import 'package:front_end/src/base/command_line_options.dart';
-
-import 'package:testing/testing.dart'
- show ChainContext, Result, Step, TestDescription, Chain, runMe;
-
-Future<Null> main([List<String> arguments = const []]) async {
- if (arguments.length == 1 && arguments[0] == "--generate") {
- print("Should now generate a dill of dart2js.");
- await generateDill();
- return null;
- } else if (arguments.length == 1 && arguments[0] == "--checkDill") {
- await checkDill();
- return null;
- }
- await runMe(arguments, createContext, configurationPath: "../testing.json");
- await checkDill();
-}
-
-String get dartVm => Platform.resolvedExecutable;
-
-Uri generateOutputUri(int binaryVersion, int compileNumber) {
- return Uri.base.resolve("pkg/front_end/testcases/old_dills/dills/"
- "dart2js"
- ".version.$binaryVersion"
- ".compile.$compileNumber"
- ".dill");
-}
-
-verifyNotUsingCheckedInDart() {
- String vm = dartVm.replaceAll(r"\", "/");
- if (vm.contains("tools/sdks/dart-sdk/bin/dart")) {
- throw "Running with checked-in VM which is not supported";
- }
-}
-
-Future<Null> checkDill() async {
- Uri uri = generateOutputUri(Tag.BinaryFormatVersion, 1);
- if (!new File.fromUri(uri).existsSync()) {
- print("File $uri doesn't exist. Generate running script");
- print("${Platform.script.toFilePath()} --generate");
- exit(1);
- }
-}
-
-Future<Null> generateDill() async {
- Uri fastaCompile = Uri.base.resolve("pkg/front_end/tool/_fasta/compile.dart");
- if (!new File.fromUri(fastaCompile).existsSync()) {
- throw "compile.dart from fasta tools couldn't be found";
- }
-
- Uri dart2js = Uri.base.resolve("pkg/compiler/bin/dart2js.dart");
- if (!new File.fromUri(dart2js).existsSync()) {
- throw "dart2js couldn't be found";
- }
-
- int compileNumber = 0;
- Uri output;
- do {
- compileNumber++;
- output = generateOutputUri(Tag.BinaryFormatVersion, compileNumber);
- } while (new File.fromUri(output).existsSync());
-
- ProcessResult result = await Process.run(
- dartVm,
- [
- fastaCompile.toFilePath(),
- "sdkroot:/pkg/compiler/bin/dart2js.dart",
- "${Flags.output}",
- output.toFilePath(),
- "${Flags.target}=vm",
- "${Flags.singleRootBase}=${Uri.base.toFilePath()}",
- "${Flags.singleRootScheme}=sdkroot",
- ],
- workingDirectory: Uri.base.toFilePath());
- if (result.exitCode != 0) {
- print("stdout: ${result.stdout}");
- print("stderr: ${result.stderr}");
- print("Exit code: ${result.exitCode}");
- throw "Got exit code ${result.exitCode}";
- } else {
- print("File generated.");
- print("");
- print("You should now upload via CIPD:");
- print("");
- print("cipd create -name dart/cfe/dart2js_dills "
- "-in pkg/front_end/testcases/old_dills/dills/ "
- "-install-mode copy "
- "-tag \"binary_version:${Tag.BinaryFormatVersion}\"");
- print("");
- print("And update the DEPS file to say "
- "binary_version:${Tag.BinaryFormatVersion} "
- "under /pkg/front_end/testcases/old_dills/dills");
- }
-}
-
-Future<Context> createContext(
- Chain suite, Map<String, String> environment) async {
- return new Context();
-}
-
-class Context extends ChainContext {
- final List<Step> steps = const <Step>[
- const RunDill(),
- ];
-}
-
-class RunDill extends Step<TestDescription, TestDescription, Context> {
- const RunDill();
-
- String get name => "RunDill";
-
- Future<Result<TestDescription>> run(
- TestDescription description, Context context) async {
- verifyNotUsingCheckedInDart();
- ProcessResult result = await Process.run(
- dartVm,
- [
- "--compile_all",
- description.uri.toFilePath(),
- "-h",
- ],
- workingDirectory: Uri.base.toFilePath());
- print("stdout: ${result.stdout}");
- print("stderr: ${result.stderr}");
- print("Exit code: ${result.exitCode}");
- if (result.exitCode != 0) {
- return fail(description, "Got exit code ${result.exitCode}");
- }
- return pass(description);
- }
-}
diff --git a/pkg/front_end/test/unit_test_suites.dart b/pkg/front_end/test/unit_test_suites.dart
index c106ebf..a0d190f 100644
--- a/pkg/front_end/test/unit_test_suites.dart
+++ b/pkg/front_end/test/unit_test_suites.dart
@@ -30,7 +30,6 @@
import 'incremental_load_from_dill_suite.dart' as incremental_load
show createContext;
import 'lint_suite.dart' as lint show createContext;
-import 'old_dill_suite.dart' as old_dill show createContext;
import 'parser_suite.dart' as parser show createContext;
import 'parser_all_suite.dart' as parserAll show createContext;
import 'spelling_test_not_src_suite.dart' as spelling_not_src
@@ -278,7 +277,6 @@
const Suite("incremental_load_from_dill", incremental_load.createContext,
"../testing.json"),
const Suite("lint", lint.createContext, "../testing.json"),
- const Suite("old_dill", old_dill.createContext, "../testing.json"),
const Suite("parser", parser.createContext, "../testing.json"),
const Suite("parser_all", parserAll.createContext, "../testing.json"),
const Suite("spelling_test_not_src", spelling_not_src.createContext,
diff --git a/pkg/front_end/testcases/general/constants/circularity_test.dart b/pkg/front_end/testcases/general/constants/circularity_test.dart
new file mode 100644
index 0000000..e1e3024
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/circularity_test.dart
@@ -0,0 +1,33 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+const int a = b;
+const int b = a;
+const int c = d;
+const int d = e + 1;
+const int e = d - 1;
+
+class Class1 {
+ const Class1({Class1 c = const Class1(c: null)});
+}
+const Class1 c1_0 = const Class1();
+const Class1 c1_1 = const Class1(c: null);
+const Class1 c1_2 = const Class1();
+
+class Class2 {
+ final Class2 field;
+ const Class2(int value) : field = value == 0 ? null : const Class2(0);
+}
+const Class2 c2_0 = const Class2(1);
+const Class2 c2_1 = const Class2(0);
+const Class2 c2_2 = const Class2(1);
+
+class Class3 {
+ const Class3([Class3 c = c3_1]);
+}
+const Class3 c3_0 = const Class3();
+const Class3 c3_1 = const Class3(c3_2);
+const Class3 c3_2 = const Class3(null);
+
+main() {}
\ No newline at end of file
diff --git a/pkg/front_end/testcases/general/constants/circularity_test.dart.outline.expect b/pkg/front_end/testcases/general/constants/circularity_test.dart.outline.expect
new file mode 100644
index 0000000..0c18665
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/circularity_test.dart.outline.expect
@@ -0,0 +1,80 @@
+library;
+import self as self;
+import "dart:core" as core;
+
+class Class1 extends core::Object /*hasConstConstructor*/ {
+ const constructor •({self::Class1* c = const self::Class1::•(c: null)}) → self::Class1*
+ : super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+class Class2 extends core::Object /*hasConstConstructor*/ {
+ final field self::Class2* field;
+ const constructor •(core::int* value) → self::Class2*
+ : self::Class2::field = value.{core::num::==}(0) ?{self::Class2*} null : const self::Class2::•(0), super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+class Class3 extends core::Object /*hasConstConstructor*/ {
+ const constructor •([self::Class3* c = self::c3_1]) → self::Class3*
+ : super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+static const field core::int* a = self::b;
+static const field core::int* b = self::a;
+static const field core::int* c = self::d;
+static const field core::int* d = self::e.{core::num::+}(1);
+static const field core::int* e = self::d.{core::num::-}(1);
+static const field self::Class1* c1_0 = const self::Class1::•();
+static const field self::Class1* c1_1 = const self::Class1::•(c: null);
+static const field self::Class1* c1_2 = const self::Class1::•();
+static const field self::Class2* c2_0 = const self::Class2::•(1);
+static const field self::Class2* c2_1 = const self::Class2::•(0);
+static const field self::Class2* c2_2 = const self::Class2::•(1);
+static const field self::Class3* c3_0 = const self::Class3::•();
+static const field self::Class3* c3_1 = const self::Class3::•(self::c3_2);
+static const field self::Class3* c3_2 = const self::Class3::•(null);
+static method main() → dynamic
+ ;
+
+
+Extra constant evaluation status:
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///circularity_test.dart:12:34 -> InstanceConstant(const Class1{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///circularity_test.dart:20:63 -> InstanceConstant(const Class2{Class2.field: null})
+Evaluated: StaticGet @ org-dartlang-testcase:///circularity_test.dart:27:28 -> InstanceConstant(const Class3{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///circularity_test.dart:14:27 -> InstanceConstant(const Class1{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///circularity_test.dart:15:27 -> InstanceConstant(const Class1{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///circularity_test.dart:16:27 -> InstanceConstant(const Class1{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///circularity_test.dart:23:27 -> InstanceConstant(const Class2{Class2.field: null})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///circularity_test.dart:29:27 -> InstanceConstant(const Class3{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///circularity_test.dart:30:27 -> InstanceConstant(const Class3{})
+Evaluated: ConstructorInvocation @ org-dartlang-testcase:///circularity_test.dart:31:27 -> InstanceConstant(const Class3{})
+Extra constant evaluation: evaluated: 22, effectively constant: 10
diff --git a/pkg/front_end/testcases/general/constants/circularity_test.dart.strong.expect b/pkg/front_end/testcases/general/constants/circularity_test.dart.strong.expect
new file mode 100644
index 0000000..7e4fe49
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/circularity_test.dart.strong.expect
@@ -0,0 +1,106 @@
+library;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/general/constants/circularity_test.dart:5:15: Error: Constant evaluation error:
+// const int a = b;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:5:15: Context: Constant expression depends on itself.
+// const int a = b;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:5:11: Context: While analyzing:
+// const int a = b;
+// ^
+//
+// pkg/front_end/testcases/general/constants/circularity_test.dart:7:15: Error: Constant evaluation error:
+// const int c = d;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:8:17: Context: Constant expression depends on itself.
+// const int d = e + 1;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:7:11: Context: While analyzing:
+// const int c = d;
+// ^
+//
+// pkg/front_end/testcases/general/constants/circularity_test.dart:8:17: Error: Constant evaluation error:
+// const int d = e + 1;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:8:17: Context: Constant expression depends on itself.
+// const int d = e + 1;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:8:11: Context: While analyzing:
+// const int d = e + 1;
+// ^
+//
+import self as self;
+import "dart:core" as core;
+
+class Class1 extends core::Object /*hasConstConstructor*/ {
+ const constructor •({self::Class1* c = #C1}) → self::Class1*
+ : super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+class Class2 extends core::Object /*hasConstConstructor*/ {
+ final field self::Class2* field;
+ const constructor •(core::int* value) → self::Class2*
+ : self::Class2::field = value.{core::num::==}(0) ?{self::Class2*} null : #C3, super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+class Class3 extends core::Object /*hasConstConstructor*/ {
+ const constructor •([self::Class3* c = #C4]) → self::Class3*
+ : super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+static const field core::int* a = invalid-expression "Constant expression depends on itself.";
+static const field core::int* b = invalid-expression "Constant expression depends on itself.";
+static const field core::int* c = invalid-expression "Constant expression depends on itself.";
+static const field core::int* d = invalid-expression "Constant expression depends on itself.";
+static const field core::int* e = invalid-expression "Constant expression depends on itself.";
+static const field self::Class1* c1_0 = #C1;
+static const field self::Class1* c1_1 = #C1;
+static const field self::Class1* c1_2 = #C1;
+static const field self::Class2* c2_0 = #C5;
+static const field self::Class2* c2_1 = #C3;
+static const field self::Class2* c2_2 = #C5;
+static const field self::Class3* c3_0 = #C4;
+static const field self::Class3* c3_1 = #C4;
+static const field self::Class3* c3_2 = #C4;
+static method main() → dynamic {}
+
+constants {
+ #C1 = self::Class1 {}
+ #C2 = null
+ #C3 = self::Class2 {field:#C2}
+ #C4 = self::Class3 {}
+ #C5 = self::Class2 {field:#C3}
+}
diff --git a/pkg/front_end/testcases/general/constants/circularity_test.dart.strong.transformed.expect b/pkg/front_end/testcases/general/constants/circularity_test.dart.strong.transformed.expect
new file mode 100644
index 0000000..7e4fe49
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/circularity_test.dart.strong.transformed.expect
@@ -0,0 +1,106 @@
+library;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/general/constants/circularity_test.dart:5:15: Error: Constant evaluation error:
+// const int a = b;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:5:15: Context: Constant expression depends on itself.
+// const int a = b;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:5:11: Context: While analyzing:
+// const int a = b;
+// ^
+//
+// pkg/front_end/testcases/general/constants/circularity_test.dart:7:15: Error: Constant evaluation error:
+// const int c = d;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:8:17: Context: Constant expression depends on itself.
+// const int d = e + 1;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:7:11: Context: While analyzing:
+// const int c = d;
+// ^
+//
+// pkg/front_end/testcases/general/constants/circularity_test.dart:8:17: Error: Constant evaluation error:
+// const int d = e + 1;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:8:17: Context: Constant expression depends on itself.
+// const int d = e + 1;
+// ^
+// pkg/front_end/testcases/general/constants/circularity_test.dart:8:11: Context: While analyzing:
+// const int d = e + 1;
+// ^
+//
+import self as self;
+import "dart:core" as core;
+
+class Class1 extends core::Object /*hasConstConstructor*/ {
+ const constructor •({self::Class1* c = #C1}) → self::Class1*
+ : super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+class Class2 extends core::Object /*hasConstConstructor*/ {
+ final field self::Class2* field;
+ const constructor •(core::int* value) → self::Class2*
+ : self::Class2::field = value.{core::num::==}(0) ?{self::Class2*} null : #C3, super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+class Class3 extends core::Object /*hasConstConstructor*/ {
+ const constructor •([self::Class3* c = #C4]) → self::Class3*
+ : super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+static const field core::int* a = invalid-expression "Constant expression depends on itself.";
+static const field core::int* b = invalid-expression "Constant expression depends on itself.";
+static const field core::int* c = invalid-expression "Constant expression depends on itself.";
+static const field core::int* d = invalid-expression "Constant expression depends on itself.";
+static const field core::int* e = invalid-expression "Constant expression depends on itself.";
+static const field self::Class1* c1_0 = #C1;
+static const field self::Class1* c1_1 = #C1;
+static const field self::Class1* c1_2 = #C1;
+static const field self::Class2* c2_0 = #C5;
+static const field self::Class2* c2_1 = #C3;
+static const field self::Class2* c2_2 = #C5;
+static const field self::Class3* c3_0 = #C4;
+static const field self::Class3* c3_1 = #C4;
+static const field self::Class3* c3_2 = #C4;
+static method main() → dynamic {}
+
+constants {
+ #C1 = self::Class1 {}
+ #C2 = null
+ #C3 = self::Class2 {field:#C2}
+ #C4 = self::Class3 {}
+ #C5 = self::Class2 {field:#C3}
+}
diff --git a/pkg/front_end/testcases/general/constants/circularity_test.dart.textual_outline.expect b/pkg/front_end/testcases/general/constants/circularity_test.dart.textual_outline.expect
new file mode 100644
index 0000000..c9c576f
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/circularity_test.dart.textual_outline.expect
@@ -0,0 +1,31 @@
+const int a = b;
+const int b = a;
+const int c = d;
+const int d = e + 1;
+const int e = d - 1;
+
+class Class1 {
+ const Class1({Class1 c = const Class1(c: null)});
+}
+
+const Class1 c1_0 = const Class1();
+const Class1 c1_1 = const Class1(c: null);
+const Class1 c1_2 = const Class1();
+
+class Class2 {
+ final Class2 field;
+ const Class2(int value) : field = value == 0 ? null : const Class2(0);
+}
+
+const Class2 c2_0 = const Class2(1);
+const Class2 c2_1 = const Class2(0);
+const Class2 c2_2 = const Class2(1);
+
+class Class3 {
+ const Class3([Class3 c = c3_1]);
+}
+
+const Class3 c3_0 = const Class3();
+const Class3 c3_1 = const Class3(c3_2);
+const Class3 c3_2 = const Class3(null);
+main() {}
diff --git a/pkg/front_end/testcases/general/constants/circularity_test.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/general/constants/circularity_test.dart.textual_outline_modelled.expect
new file mode 100644
index 0000000..e9c0ae7
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/circularity_test.dart.textual_outline_modelled.expect
@@ -0,0 +1,28 @@
+class Class1 {
+ const Class1({Class1 c = const Class1(c: null)});
+}
+
+class Class2 {
+ const Class2(int value) : field = value == 0 ? null : const Class2(0);
+ final Class2 field;
+}
+
+class Class3 {
+ const Class3([Class3 c = c3_1]);
+}
+
+const Class1 c1_0 = const Class1();
+const Class1 c1_1 = const Class1(c: null);
+const Class1 c1_2 = const Class1();
+const Class2 c2_0 = const Class2(1);
+const Class2 c2_1 = const Class2(0);
+const Class2 c2_2 = const Class2(1);
+const Class3 c3_0 = const Class3();
+const Class3 c3_1 = const Class3(c3_2);
+const Class3 c3_2 = const Class3(null);
+const int a = b;
+const int b = a;
+const int c = d;
+const int d = e + 1;
+const int e = d - 1;
+main() {}
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart b/pkg/front_end/testcases/general/constants/issue_43431.dart
new file mode 100644
index 0000000..c333e70
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart
@@ -0,0 +1,10 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+class Foo {
+ const Foo({bool x: true});
+ const x = Foo();
+}
+
+main() {}
\ No newline at end of file
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.outline.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.outline.expect
new file mode 100644
index 0000000..1854d2a
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.outline.expect
@@ -0,0 +1,30 @@
+library;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:3: Error: Only static fields can be declared as const.
+// Try using 'final' instead of 'const', or adding the keyword 'static'.
+// const x = Foo();
+// ^^^^^
+//
+import self as self;
+import "dart:core" as core;
+
+class Foo extends core::Object /*hasConstConstructor*/ {
+ field self::Foo* x;
+ const constructor •({core::bool* x = true}) → self::Foo*
+ : super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+static method main() → dynamic
+ ;
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.strong.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.strong.expect
new file mode 100644
index 0000000..1c887af
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.strong.expect
@@ -0,0 +1,52 @@
+library;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:3: Error: Only static fields can be declared as const.
+// Try using 'final' instead of 'const', or adding the keyword 'static'.
+// const x = Foo();
+// ^^^^^
+//
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:13: Error: Constant expression expected.
+// Try inserting 'const'.
+// const x = Foo();
+// ^^^
+//
+// pkg/front_end/testcases/general/constants/issue_43431.dart:6:9: Error: Constructor is marked 'const' so all fields must be final.
+// const Foo({bool x: true});
+// ^
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:9: Context: Field isn't final, but constructor is 'const'.
+// const x = Foo();
+// ^
+//
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:13: Error: Constant evaluation error:
+// const x = Foo();
+// ^
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:13: Context: Constant expression depends on itself.
+// const x = Foo();
+// ^
+//
+import self as self;
+import "dart:core" as core;
+
+class Foo extends core::Object /*hasConstConstructor*/ {
+ field self::Foo* x = invalid-expression "Constant expression depends on itself.";
+ const constructor •({core::bool* x = #C1}) → self::Foo*
+ : super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+static method main() → dynamic {}
+
+constants {
+ #C1 = true
+}
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.strong.transformed.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.strong.transformed.expect
new file mode 100644
index 0000000..1c887af
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.strong.transformed.expect
@@ -0,0 +1,52 @@
+library;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:3: Error: Only static fields can be declared as const.
+// Try using 'final' instead of 'const', or adding the keyword 'static'.
+// const x = Foo();
+// ^^^^^
+//
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:13: Error: Constant expression expected.
+// Try inserting 'const'.
+// const x = Foo();
+// ^^^
+//
+// pkg/front_end/testcases/general/constants/issue_43431.dart:6:9: Error: Constructor is marked 'const' so all fields must be final.
+// const Foo({bool x: true});
+// ^
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:9: Context: Field isn't final, but constructor is 'const'.
+// const x = Foo();
+// ^
+//
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:13: Error: Constant evaluation error:
+// const x = Foo();
+// ^
+// pkg/front_end/testcases/general/constants/issue_43431.dart:7:13: Context: Constant expression depends on itself.
+// const x = Foo();
+// ^
+//
+import self as self;
+import "dart:core" as core;
+
+class Foo extends core::Object /*hasConstConstructor*/ {
+ field self::Foo* x = invalid-expression "Constant expression depends on itself.";
+ const constructor •({core::bool* x = #C1}) → self::Foo*
+ : super core::Object::•()
+ ;
+ abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
+ abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
+ abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
+ abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
+ abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
+ abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
+ abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
+ abstract member-signature method toString() → core::String*; -> core::Object::toString
+ abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
+ abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
+}
+static method main() → dynamic {}
+
+constants {
+ #C1 = true
+}
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline.expect
new file mode 100644
index 0000000..3051321
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline.expect
@@ -0,0 +1,6 @@
+class Foo {
+ const Foo({bool x: true});
+ const x = Foo();
+}
+
+main() {}
diff --git a/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline_modelled.expect
new file mode 100644
index 0000000..3051321
--- /dev/null
+++ b/pkg/front_end/testcases/general/constants/issue_43431.dart.textual_outline_modelled.expect
@@ -0,0 +1,6 @@
+class Foo {
+ const Foo({bool x: true});
+ const x = Foo();
+}
+
+main() {}
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart
new file mode 100644
index 0000000..6a834f6
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart
@@ -0,0 +1,7 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'ambiguous_main_export_lib0.dart';
+
+main() {}
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.outline.expect b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.outline.expect
new file mode 100644
index 0000000..bed220f
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.outline.expect
@@ -0,0 +1,34 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///ambiguous_main_export_lib0.dart";
+
+static method main() → dynamic
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/ambiguous_main_export_lib0.dart:6:1: Error: 'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.
+// export 'ambiguous_main_export_lib2.dart';
+// ^
+//
+import self as self2;
+
+export "org-dartlang-testcase:///ambiguous_main_export_lib1.dart";
+export "org-dartlang-testcase:///ambiguous_main_export_lib2.dart";
+
+static const field dynamic _exports# = "{\"main\":\"'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.\"}" /*isNullableByDefault, from null */;
+
+library /*isNonNullableByDefault*/;
+import self as self3;
+
+static method main() → dynamic
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as self4;
+
+static method main() → dynamic
+ ;
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.strong.expect b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.strong.expect
new file mode 100644
index 0000000..8a5ab57
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.strong.expect
@@ -0,0 +1,42 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///ambiguous_main_export_lib0.dart";
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/ambiguous_main_export_lib0.dart:6:1: Error: 'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.
+// export 'ambiguous_main_export_lib2.dart';
+// ^
+//
+import self as self2;
+import "dart:core" as core;
+
+export "org-dartlang-testcase:///ambiguous_main_export_lib1.dart";
+export "org-dartlang-testcase:///ambiguous_main_export_lib2.dart";
+
+static const field dynamic _exports# = #C1 /*isNullableByDefault, from null */;
+
+library /*isNonNullableByDefault*/;
+import self as self3;
+import "dart:core" as core;
+
+static method main() → dynamic {
+ core::print(42);
+}
+
+library /*isNonNullableByDefault*/;
+import self as self4;
+import "dart:core" as core;
+
+static method main() → dynamic {
+ core::print(87);
+}
+
+constants {
+ #C1 = "{\"main\":\"'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.\"}"
+}
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.strong.transformed.expect b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.strong.transformed.expect
new file mode 100644
index 0000000..8a5ab57
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.strong.transformed.expect
@@ -0,0 +1,42 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///ambiguous_main_export_lib0.dart";
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/ambiguous_main_export_lib0.dart:6:1: Error: 'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.
+// export 'ambiguous_main_export_lib2.dart';
+// ^
+//
+import self as self2;
+import "dart:core" as core;
+
+export "org-dartlang-testcase:///ambiguous_main_export_lib1.dart";
+export "org-dartlang-testcase:///ambiguous_main_export_lib2.dart";
+
+static const field dynamic _exports# = #C1 /*isNullableByDefault, from null */;
+
+library /*isNonNullableByDefault*/;
+import self as self3;
+import "dart:core" as core;
+
+static method main() → dynamic {
+ core::print(42);
+}
+
+library /*isNonNullableByDefault*/;
+import self as self4;
+import "dart:core" as core;
+
+static method main() → dynamic {
+ core::print(87);
+}
+
+constants {
+ #C1 = "{\"main\":\"'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.\"}"
+}
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.textual_outline.expect b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.textual_outline.expect
new file mode 100644
index 0000000..1e66c5b
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.textual_outline.expect
@@ -0,0 +1,3 @@
+import 'ambiguous_main_export_lib0.dart';
+
+main() {}
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.textual_outline_modelled.expect
new file mode 100644
index 0000000..1e66c5b
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.textual_outline_modelled.expect
@@ -0,0 +1,3 @@
+import 'ambiguous_main_export_lib0.dart';
+
+main() {}
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.weak.expect b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.weak.expect
new file mode 100644
index 0000000..8a5ab57
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.weak.expect
@@ -0,0 +1,42 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///ambiguous_main_export_lib0.dart";
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/ambiguous_main_export_lib0.dart:6:1: Error: 'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.
+// export 'ambiguous_main_export_lib2.dart';
+// ^
+//
+import self as self2;
+import "dart:core" as core;
+
+export "org-dartlang-testcase:///ambiguous_main_export_lib1.dart";
+export "org-dartlang-testcase:///ambiguous_main_export_lib2.dart";
+
+static const field dynamic _exports# = #C1 /*isNullableByDefault, from null */;
+
+library /*isNonNullableByDefault*/;
+import self as self3;
+import "dart:core" as core;
+
+static method main() → dynamic {
+ core::print(42);
+}
+
+library /*isNonNullableByDefault*/;
+import self as self4;
+import "dart:core" as core;
+
+static method main() → dynamic {
+ core::print(87);
+}
+
+constants {
+ #C1 = "{\"main\":\"'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.\"}"
+}
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.weak.transformed.expect b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.weak.transformed.expect
new file mode 100644
index 0000000..8a5ab57
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export.dart.weak.transformed.expect
@@ -0,0 +1,42 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///ambiguous_main_export_lib0.dart";
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/ambiguous_main_export_lib0.dart:6:1: Error: 'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.
+// export 'ambiguous_main_export_lib2.dart';
+// ^
+//
+import self as self2;
+import "dart:core" as core;
+
+export "org-dartlang-testcase:///ambiguous_main_export_lib1.dart";
+export "org-dartlang-testcase:///ambiguous_main_export_lib2.dart";
+
+static const field dynamic _exports# = #C1 /*isNullableByDefault, from null */;
+
+library /*isNonNullableByDefault*/;
+import self as self3;
+import "dart:core" as core;
+
+static method main() → dynamic {
+ core::print(42);
+}
+
+library /*isNonNullableByDefault*/;
+import self as self4;
+import "dart:core" as core;
+
+static method main() → dynamic {
+ core::print(87);
+}
+
+constants {
+ #C1 = "{\"main\":\"'main' is exported from both 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart' and 'pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart'.\"}"
+}
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export_lib0.dart b/pkg/front_end/testcases/nnbd/ambiguous_main_export_lib0.dart
new file mode 100644
index 0000000..f52c596
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export_lib0.dart
@@ -0,0 +1,6 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'ambiguous_main_export_lib1.dart';
+export 'ambiguous_main_export_lib2.dart';
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart b/pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart
new file mode 100644
index 0000000..50dfbde
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export_lib1.dart
@@ -0,0 +1,7 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+main() {
+ print(42);
+}
diff --git a/pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart b/pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart
new file mode 100644
index 0000000..2c38c67
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/ambiguous_main_export_lib2.dart
@@ -0,0 +1,7 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+main() {
+ print(87);
+}
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration.dart b/pkg/front_end/testcases/nnbd/export_main_declaration.dart
new file mode 100644
index 0000000..20e61e6
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration.dart
@@ -0,0 +1,32 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'export_main_declaration_class_lib.dart' as class_lib;
+import 'export_main_declaration_extension_lib.dart' as extension_lib;
+import 'export_main_declaration_field_lib.dart' as field_lib;
+import 'export_main_declaration_getter_lib.dart' as getter_lib;
+import 'export_main_declaration_method_extra_optional_parameters_lib.dart'
+ as method_extra_optional_parameters_lib;
+import 'export_main_declaration_method_named_parameters_lib.dart'
+ as method_named_parameters_lib;
+import 'export_main_declaration_method_one_optional_parameter_lib.dart'
+ as method_one_optional_parameter_lib;
+import 'export_main_declaration_method_one_parameter_lib.dart'
+ as method_one_parameter_lib;
+import 'export_main_declaration_method_one_required_optional_lib.dart'
+ as method_one_required_optional_lib;
+import 'export_main_declaration_method_required_named_parameters_lib.dart'
+ as method_required_named_parameters_lib;
+import 'export_main_declaration_method_too_many_parameters_lib.dart'
+ as method_too_many_parameters_lib;
+import 'export_main_declaration_method_two_optional_parameters_lib.dart'
+ as method_two_optional_parameters_lib;
+import 'export_main_declaration_method_two_parameters_lib.dart'
+ as method_two_parameters_lib;
+import 'export_main_declaration_method_wrong_parameter_type_lib.dart'
+ as method_wrong_parameter_type_lib;
+import 'export_main_declaration_setter_lib.dart' as setter_lib;
+import 'export_main_declaration_typedef_lib.dart' as typedef_lib;
+
+export 'main_declaration.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration.dart.outline.expect b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.outline.expect
new file mode 100644
index 0000000..4212a8e
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.outline.expect
@@ -0,0 +1,421 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+import "main_declaration.dart" as mai;
+additionalExports = (mai::main)
+
+import "org-dartlang-testcase:///export_main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///export_main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///export_main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///export_main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///export_main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///export_main_declaration_typedef_lib.dart" as typedef_lib;
+export "org-dartlang-testcase:///main_declaration.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_class_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Context: This is exported 'main' declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "main_declaration_class_lib.dart" as mai2;
+additionalExports = (mai2::main)
+
+export "org-dartlang-testcase:///main_declaration_class_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_extension_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Context: This is exported 'main' declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "main_declaration_extension_lib.dart" as mai3;
+additionalExports = (mai3::main)
+
+export "org-dartlang-testcase:///main_declaration_extension_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_field_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Context: This is exported 'main' declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+import "main_declaration_field_lib.dart" as mai4;
+additionalExports = (mai4::main)
+
+export "org-dartlang-testcase:///main_declaration_field_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_getter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Context: This is exported 'main' declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+import "main_declaration_getter_lib.dart" as mai5;
+additionalExports = (mai5::main)
+
+export "org-dartlang-testcase:///main_declaration_getter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "main_declaration_method_extra_optional_parameters_lib.dart" as mai6;
+additionalExports = (mai6::main)
+
+export "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "main_declaration_method_named_parameters_lib.dart" as mai7;
+additionalExports = (mai7::main)
+
+export "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "main_declaration_method_one_optional_parameter_lib.dart" as mai8;
+additionalExports = (mai8::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "main_declaration_method_one_parameter_lib.dart" as mai9;
+additionalExports = (mai9::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "main_declaration_method_one_required_optional_lib.dart" as mai10;
+additionalExports = (mai10::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_required_named_parameters_lib.dart: Error: The exported 'main' method cannot have required named parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "main_declaration_method_required_named_parameters_lib.dart" as mai11;
+additionalExports = (mai11::main)
+
+export "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_too_many_parameters_lib.dart: Error: The exported 'main' method must have at most 2 required parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "main_declaration_method_too_many_parameters_lib.dart" as mai12;
+additionalExports = (mai12::main)
+
+export "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "main_declaration_method_two_optional_parameters_lib.dart" as mai13;
+additionalExports = (mai13::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "main_declaration_method_two_parameters_lib.dart" as mai14;
+additionalExports = (mai14::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_wrong_parameter_type_lib.dart: Error: The type 'Set<String>' of the first parameter of the exported 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "main_declaration_method_wrong_parameter_type_lib.dart" as mai15;
+additionalExports = (mai15::main)
+
+export "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_setter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Context: This is exported 'main' declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+import "main_declaration_setter_lib.dart" as mai16;
+additionalExports = (mai16::main)
+
+export "org-dartlang-testcase:///main_declaration_setter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_typedef_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Context: This is exported 'main' declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+import "main_declaration_typedef_lib.dart" as mai17;
+additionalExports = (mai17::main)
+
+export "org-dartlang-testcase:///main_declaration_typedef_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as mai;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as mai2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → mai2::main
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as mai3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as mai4;
+
+static field () → void main;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as mai5;
+
+static get main() → () → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as mai6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra]) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as mai7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args}) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as mai8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args]) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as mai9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as mai10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other]) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as mai11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args}) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as mai12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as mai13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args, dynamic other]) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as mai14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as mai15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as mai16;
+
+static set main(() → void f) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as mai17;
+
+typedef main = () → void;
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration.dart.strong.expect b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.strong.expect
new file mode 100644
index 0000000..87148a1
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.strong.expect
@@ -0,0 +1,417 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+import "main_declaration.dart" as mai;
+additionalExports = (mai::main)
+
+import "org-dartlang-testcase:///export_main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///export_main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///export_main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///export_main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///export_main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///export_main_declaration_typedef_lib.dart" as typedef_lib;
+export "org-dartlang-testcase:///main_declaration.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_class_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Context: This is exported 'main' declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "main_declaration_class_lib.dart" as mai2;
+additionalExports = (mai2::main)
+
+export "org-dartlang-testcase:///main_declaration_class_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_extension_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Context: This is exported 'main' declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "main_declaration_extension_lib.dart" as mai3;
+additionalExports = (mai3::main)
+
+export "org-dartlang-testcase:///main_declaration_extension_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_field_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Context: This is exported 'main' declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+import "main_declaration_field_lib.dart" as mai4;
+additionalExports = (mai4::main)
+
+export "org-dartlang-testcase:///main_declaration_field_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_getter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Context: This is exported 'main' declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+import "main_declaration_getter_lib.dart" as mai5;
+additionalExports = (mai5::main)
+
+export "org-dartlang-testcase:///main_declaration_getter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "main_declaration_method_extra_optional_parameters_lib.dart" as mai6;
+additionalExports = (mai6::main)
+
+export "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "main_declaration_method_named_parameters_lib.dart" as mai7;
+additionalExports = (mai7::main)
+
+export "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "main_declaration_method_one_optional_parameter_lib.dart" as mai8;
+additionalExports = (mai8::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "main_declaration_method_one_parameter_lib.dart" as mai9;
+additionalExports = (mai9::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "main_declaration_method_one_required_optional_lib.dart" as mai10;
+additionalExports = (mai10::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_required_named_parameters_lib.dart: Error: The exported 'main' method cannot have required named parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "main_declaration_method_required_named_parameters_lib.dart" as mai11;
+additionalExports = (mai11::main)
+
+export "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_too_many_parameters_lib.dart: Error: The exported 'main' method must have at most 2 required parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "main_declaration_method_too_many_parameters_lib.dart" as mai12;
+additionalExports = (mai12::main)
+
+export "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "main_declaration_method_two_optional_parameters_lib.dart" as mai13;
+additionalExports = (mai13::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "main_declaration_method_two_parameters_lib.dart" as mai14;
+additionalExports = (mai14::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_wrong_parameter_type_lib.dart: Error: The type 'Set<String>' of the first parameter of the exported 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "main_declaration_method_wrong_parameter_type_lib.dart" as mai15;
+additionalExports = (mai15::main)
+
+export "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_setter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Context: This is exported 'main' declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+import "main_declaration_setter_lib.dart" as mai16;
+additionalExports = (mai16::main)
+
+export "org-dartlang-testcase:///main_declaration_setter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_typedef_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Context: This is exported 'main' declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+import "main_declaration_typedef_lib.dart" as mai17;
+additionalExports = (mai17::main)
+
+export "org-dartlang-testcase:///main_declaration_typedef_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as mai;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as mai2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → mai2::main
+ : super core::Object::•()
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as mai3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as mai4;
+import "dart:core" as core;
+
+static field () → void main = () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as mai5;
+import "dart:core" as core;
+
+static get main() → () → void
+ return () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+import self as mai6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args = #C2}) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as mai11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args = #C1}) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as mai12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args = #C2, dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as mai15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as mai16;
+
+static set main(() → void f) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as mai17;
+
+typedef main = () → void;
+
+constants {
+ #C1 = null
+ #C2 = <core::String>[]
+}
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration.dart.strong.transformed.expect b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.strong.transformed.expect
new file mode 100644
index 0000000..87148a1
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.strong.transformed.expect
@@ -0,0 +1,417 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+import "main_declaration.dart" as mai;
+additionalExports = (mai::main)
+
+import "org-dartlang-testcase:///export_main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///export_main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///export_main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///export_main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///export_main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///export_main_declaration_typedef_lib.dart" as typedef_lib;
+export "org-dartlang-testcase:///main_declaration.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_class_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Context: This is exported 'main' declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "main_declaration_class_lib.dart" as mai2;
+additionalExports = (mai2::main)
+
+export "org-dartlang-testcase:///main_declaration_class_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_extension_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Context: This is exported 'main' declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "main_declaration_extension_lib.dart" as mai3;
+additionalExports = (mai3::main)
+
+export "org-dartlang-testcase:///main_declaration_extension_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_field_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Context: This is exported 'main' declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+import "main_declaration_field_lib.dart" as mai4;
+additionalExports = (mai4::main)
+
+export "org-dartlang-testcase:///main_declaration_field_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_getter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Context: This is exported 'main' declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+import "main_declaration_getter_lib.dart" as mai5;
+additionalExports = (mai5::main)
+
+export "org-dartlang-testcase:///main_declaration_getter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "main_declaration_method_extra_optional_parameters_lib.dart" as mai6;
+additionalExports = (mai6::main)
+
+export "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "main_declaration_method_named_parameters_lib.dart" as mai7;
+additionalExports = (mai7::main)
+
+export "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "main_declaration_method_one_optional_parameter_lib.dart" as mai8;
+additionalExports = (mai8::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "main_declaration_method_one_parameter_lib.dart" as mai9;
+additionalExports = (mai9::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "main_declaration_method_one_required_optional_lib.dart" as mai10;
+additionalExports = (mai10::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_required_named_parameters_lib.dart: Error: The exported 'main' method cannot have required named parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "main_declaration_method_required_named_parameters_lib.dart" as mai11;
+additionalExports = (mai11::main)
+
+export "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_too_many_parameters_lib.dart: Error: The exported 'main' method must have at most 2 required parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "main_declaration_method_too_many_parameters_lib.dart" as mai12;
+additionalExports = (mai12::main)
+
+export "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "main_declaration_method_two_optional_parameters_lib.dart" as mai13;
+additionalExports = (mai13::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "main_declaration_method_two_parameters_lib.dart" as mai14;
+additionalExports = (mai14::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_wrong_parameter_type_lib.dart: Error: The type 'Set<String>' of the first parameter of the exported 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "main_declaration_method_wrong_parameter_type_lib.dart" as mai15;
+additionalExports = (mai15::main)
+
+export "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_setter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Context: This is exported 'main' declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+import "main_declaration_setter_lib.dart" as mai16;
+additionalExports = (mai16::main)
+
+export "org-dartlang-testcase:///main_declaration_setter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_typedef_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Context: This is exported 'main' declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+import "main_declaration_typedef_lib.dart" as mai17;
+additionalExports = (mai17::main)
+
+export "org-dartlang-testcase:///main_declaration_typedef_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as mai;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as mai2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → mai2::main
+ : super core::Object::•()
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as mai3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as mai4;
+import "dart:core" as core;
+
+static field () → void main = () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as mai5;
+import "dart:core" as core;
+
+static get main() → () → void
+ return () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+import self as mai6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args = #C2}) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as mai11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args = #C1}) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as mai12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args = #C2, dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as mai15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as mai16;
+
+static set main(() → void f) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as mai17;
+
+typedef main = () → void;
+
+constants {
+ #C1 = null
+ #C2 = <core::String>[]
+}
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration.dart.textual_outline.expect b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.textual_outline.expect
new file mode 100644
index 0000000..fa882bb
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.textual_outline.expect
@@ -0,0 +1,27 @@
+import 'export_main_declaration_class_lib.dart' as class_lib;
+import 'export_main_declaration_extension_lib.dart' as extension_lib;
+import 'export_main_declaration_field_lib.dart' as field_lib;
+import 'export_main_declaration_getter_lib.dart' as getter_lib;
+import 'export_main_declaration_method_extra_optional_parameters_lib.dart'
+ as method_extra_optional_parameters_lib;
+import 'export_main_declaration_method_named_parameters_lib.dart'
+ as method_named_parameters_lib;
+import 'export_main_declaration_method_one_optional_parameter_lib.dart'
+ as method_one_optional_parameter_lib;
+import 'export_main_declaration_method_one_parameter_lib.dart'
+ as method_one_parameter_lib;
+import 'export_main_declaration_method_one_required_optional_lib.dart'
+ as method_one_required_optional_lib;
+import 'export_main_declaration_method_required_named_parameters_lib.dart'
+ as method_required_named_parameters_lib;
+import 'export_main_declaration_method_too_many_parameters_lib.dart'
+ as method_too_many_parameters_lib;
+import 'export_main_declaration_method_two_optional_parameters_lib.dart'
+ as method_two_optional_parameters_lib;
+import 'export_main_declaration_method_two_parameters_lib.dart'
+ as method_two_parameters_lib;
+import 'export_main_declaration_method_wrong_parameter_type_lib.dart'
+ as method_wrong_parameter_type_lib;
+import 'export_main_declaration_setter_lib.dart' as setter_lib;
+import 'export_main_declaration_typedef_lib.dart' as typedef_lib;
+export 'main_declaration.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.textual_outline_modelled.expect
new file mode 100644
index 0000000..a182a3e
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.textual_outline_modelled.expect
@@ -0,0 +1,27 @@
+export 'main_declaration.dart';
+import 'export_main_declaration_class_lib.dart' as class_lib;
+import 'export_main_declaration_extension_lib.dart' as extension_lib;
+import 'export_main_declaration_field_lib.dart' as field_lib;
+import 'export_main_declaration_getter_lib.dart' as getter_lib;
+import 'export_main_declaration_method_extra_optional_parameters_lib.dart'
+ as method_extra_optional_parameters_lib;
+import 'export_main_declaration_method_named_parameters_lib.dart'
+ as method_named_parameters_lib;
+import 'export_main_declaration_method_one_optional_parameter_lib.dart'
+ as method_one_optional_parameter_lib;
+import 'export_main_declaration_method_one_parameter_lib.dart'
+ as method_one_parameter_lib;
+import 'export_main_declaration_method_one_required_optional_lib.dart'
+ as method_one_required_optional_lib;
+import 'export_main_declaration_method_required_named_parameters_lib.dart'
+ as method_required_named_parameters_lib;
+import 'export_main_declaration_method_too_many_parameters_lib.dart'
+ as method_too_many_parameters_lib;
+import 'export_main_declaration_method_two_optional_parameters_lib.dart'
+ as method_two_optional_parameters_lib;
+import 'export_main_declaration_method_two_parameters_lib.dart'
+ as method_two_parameters_lib;
+import 'export_main_declaration_method_wrong_parameter_type_lib.dart'
+ as method_wrong_parameter_type_lib;
+import 'export_main_declaration_setter_lib.dart' as setter_lib;
+import 'export_main_declaration_typedef_lib.dart' as typedef_lib;
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration.dart.weak.expect b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.weak.expect
new file mode 100644
index 0000000..00c2307
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.weak.expect
@@ -0,0 +1,417 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+import "main_declaration.dart" as mai;
+additionalExports = (mai::main)
+
+import "org-dartlang-testcase:///export_main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///export_main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///export_main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///export_main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///export_main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///export_main_declaration_typedef_lib.dart" as typedef_lib;
+export "org-dartlang-testcase:///main_declaration.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_class_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Context: This is exported 'main' declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "main_declaration_class_lib.dart" as mai2;
+additionalExports = (mai2::main)
+
+export "org-dartlang-testcase:///main_declaration_class_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_extension_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Context: This is exported 'main' declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "main_declaration_extension_lib.dart" as mai3;
+additionalExports = (mai3::main)
+
+export "org-dartlang-testcase:///main_declaration_extension_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_field_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Context: This is exported 'main' declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+import "main_declaration_field_lib.dart" as mai4;
+additionalExports = (mai4::main)
+
+export "org-dartlang-testcase:///main_declaration_field_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_getter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Context: This is exported 'main' declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+import "main_declaration_getter_lib.dart" as mai5;
+additionalExports = (mai5::main)
+
+export "org-dartlang-testcase:///main_declaration_getter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "main_declaration_method_extra_optional_parameters_lib.dart" as mai6;
+additionalExports = (mai6::main)
+
+export "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "main_declaration_method_named_parameters_lib.dart" as mai7;
+additionalExports = (mai7::main)
+
+export "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "main_declaration_method_one_optional_parameter_lib.dart" as mai8;
+additionalExports = (mai8::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "main_declaration_method_one_parameter_lib.dart" as mai9;
+additionalExports = (mai9::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "main_declaration_method_one_required_optional_lib.dart" as mai10;
+additionalExports = (mai10::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_required_named_parameters_lib.dart: Error: The exported 'main' method cannot have required named parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "main_declaration_method_required_named_parameters_lib.dart" as mai11;
+additionalExports = (mai11::main)
+
+export "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_too_many_parameters_lib.dart: Error: The exported 'main' method must have at most 2 required parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "main_declaration_method_too_many_parameters_lib.dart" as mai12;
+additionalExports = (mai12::main)
+
+export "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "main_declaration_method_two_optional_parameters_lib.dart" as mai13;
+additionalExports = (mai13::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "main_declaration_method_two_parameters_lib.dart" as mai14;
+additionalExports = (mai14::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_wrong_parameter_type_lib.dart: Error: The type 'Set<String>' of the first parameter of the exported 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "main_declaration_method_wrong_parameter_type_lib.dart" as mai15;
+additionalExports = (mai15::main)
+
+export "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_setter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Context: This is exported 'main' declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+import "main_declaration_setter_lib.dart" as mai16;
+additionalExports = (mai16::main)
+
+export "org-dartlang-testcase:///main_declaration_setter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_typedef_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Context: This is exported 'main' declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+import "main_declaration_typedef_lib.dart" as mai17;
+additionalExports = (mai17::main)
+
+export "org-dartlang-testcase:///main_declaration_typedef_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as mai;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as mai2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → mai2::main
+ : super core::Object::•()
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as mai3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as mai4;
+import "dart:core" as core;
+
+static field () → void main = () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as mai5;
+import "dart:core" as core;
+
+static get main() → () → void
+ return () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+import self as mai6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args = #C2}) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as mai11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args = #C1}) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as mai12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args = #C2, dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as mai15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as mai16;
+
+static set main(() → void f) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as mai17;
+
+typedef main = () → void;
+
+constants {
+ #C1 = null
+ #C2 = <core::String*>[]
+}
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration.dart.weak.transformed.expect b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.weak.transformed.expect
new file mode 100644
index 0000000..00c2307
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration.dart.weak.transformed.expect
@@ -0,0 +1,417 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+import "main_declaration.dart" as mai;
+additionalExports = (mai::main)
+
+import "org-dartlang-testcase:///export_main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///export_main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///export_main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///export_main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///export_main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///export_main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///export_main_declaration_typedef_lib.dart" as typedef_lib;
+export "org-dartlang-testcase:///main_declaration.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_class_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Context: This is exported 'main' declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "main_declaration_class_lib.dart" as mai2;
+additionalExports = (mai2::main)
+
+export "org-dartlang-testcase:///main_declaration_class_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_extension_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Context: This is exported 'main' declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "main_declaration_extension_lib.dart" as mai3;
+additionalExports = (mai3::main)
+
+export "org-dartlang-testcase:///main_declaration_extension_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_field_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Context: This is exported 'main' declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+import "main_declaration_field_lib.dart" as mai4;
+additionalExports = (mai4::main)
+
+export "org-dartlang-testcase:///main_declaration_field_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_getter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Context: This is exported 'main' declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+import "main_declaration_getter_lib.dart" as mai5;
+additionalExports = (mai5::main)
+
+export "org-dartlang-testcase:///main_declaration_getter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "main_declaration_method_extra_optional_parameters_lib.dart" as mai6;
+additionalExports = (mai6::main)
+
+export "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "main_declaration_method_named_parameters_lib.dart" as mai7;
+additionalExports = (mai7::main)
+
+export "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "main_declaration_method_one_optional_parameter_lib.dart" as mai8;
+additionalExports = (mai8::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "main_declaration_method_one_parameter_lib.dart" as mai9;
+additionalExports = (mai9::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "main_declaration_method_one_required_optional_lib.dart" as mai10;
+additionalExports = (mai10::main)
+
+export "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_required_named_parameters_lib.dart: Error: The exported 'main' method cannot have required named parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "main_declaration_method_required_named_parameters_lib.dart" as mai11;
+additionalExports = (mai11::main)
+
+export "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_too_many_parameters_lib.dart: Error: The exported 'main' method must have at most 2 required parameters.
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "main_declaration_method_too_many_parameters_lib.dart" as mai12;
+additionalExports = (mai12::main)
+
+export "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "main_declaration_method_two_optional_parameters_lib.dart" as mai13;
+additionalExports = (mai13::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "main_declaration_method_two_parameters_lib.dart" as mai14;
+additionalExports = (mai14::main)
+
+export "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_method_wrong_parameter_type_lib.dart: Error: The type 'Set<String>' of the first parameter of the exported 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Context: This is exported 'main' declaration.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "main_declaration_method_wrong_parameter_type_lib.dart" as mai15;
+additionalExports = (mai15::main)
+
+export "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_setter_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Context: This is exported 'main' declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+import "main_declaration_setter_lib.dart" as mai16;
+additionalExports = (mai16::main)
+
+export "org-dartlang-testcase:///main_declaration_setter_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/export_main_declaration_typedef_lib.dart: Error: The exported 'main' declaration must be a function declaration.
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Context: This is exported 'main' declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+import "main_declaration_typedef_lib.dart" as mai17;
+additionalExports = (mai17::main)
+
+export "org-dartlang-testcase:///main_declaration_typedef_lib.dart";
+
+
+library /*isNonNullableByDefault*/;
+import self as mai;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as mai2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → mai2::main
+ : super core::Object::•()
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as mai3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as mai4;
+import "dart:core" as core;
+
+static field () → void main = () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as mai5;
+import "dart:core" as core;
+
+static get main() → () → void
+ return () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+import self as mai6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args = #C2}) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as mai11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args = #C1}) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as mai12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args = #C2, dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as mai14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as mai15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as mai16;
+
+static set main(() → void f) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as mai17;
+
+typedef main = () → void;
+
+constants {
+ #C1 = null
+ #C2 = <core::String*>[]
+}
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_class_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_class_lib.dart
new file mode 100644
index 0000000..6e90759e
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_class_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_class_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_extension_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_extension_lib.dart
new file mode 100644
index 0000000..23551a6
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_extension_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_extension_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_field_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_field_lib.dart
new file mode 100644
index 0000000..748d5f6
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_field_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_field_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_getter_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_getter_lib.dart
new file mode 100644
index 0000000..f9664ca
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_getter_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_getter_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_extra_optional_parameters_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_extra_optional_parameters_lib.dart
new file mode 100644
index 0000000..9baf657
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_extra_optional_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_extra_optional_parameters_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_named_parameters_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_named_parameters_lib.dart
new file mode 100644
index 0000000..8463a27
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_named_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_named_parameters_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_one_optional_parameter_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_one_optional_parameter_lib.dart
new file mode 100644
index 0000000..b085630
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_one_optional_parameter_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_one_optional_parameter_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_one_parameter_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_one_parameter_lib.dart
new file mode 100644
index 0000000..0763ad4
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_one_parameter_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_one_parameter_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_one_required_optional_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_one_required_optional_lib.dart
new file mode 100644
index 0000000..dc1d7da
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_one_required_optional_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_one_required_optional_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_required_named_parameters_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_required_named_parameters_lib.dart
new file mode 100644
index 0000000..0496be2
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_required_named_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_required_named_parameters_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_too_many_parameters_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_too_many_parameters_lib.dart
new file mode 100644
index 0000000..3158bed
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_too_many_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_too_many_parameters_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_two_optional_parameters_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_two_optional_parameters_lib.dart
new file mode 100644
index 0000000..1fd396a
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_two_optional_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_two_optional_parameters_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_two_parameters_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_two_parameters_lib.dart
new file mode 100644
index 0000000..a59df30
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_two_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_two_parameters_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_method_wrong_parameter_type_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_method_wrong_parameter_type_lib.dart
new file mode 100644
index 0000000..ecb7126
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_method_wrong_parameter_type_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_method_wrong_parameter_type_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_setter_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_setter_lib.dart
new file mode 100644
index 0000000..2f994d9
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_setter_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_setter_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/export_main_declaration_typedef_lib.dart b/pkg/front_end/testcases/nnbd/export_main_declaration_typedef_lib.dart
new file mode 100644
index 0000000..79c9645
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/export_main_declaration_typedef_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+export 'main_declaration_typedef_lib.dart';
diff --git a/pkg/front_end/testcases/nnbd/main_declaration.dart b/pkg/front_end/testcases/nnbd/main_declaration.dart
new file mode 100644
index 0000000..102df45
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration.dart
@@ -0,0 +1,32 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'main_declaration_class_lib.dart' as class_lib;
+import 'main_declaration_extension_lib.dart' as extension_lib;
+import 'main_declaration_field_lib.dart' as field_lib;
+import 'main_declaration_getter_lib.dart' as getter_lib;
+import 'main_declaration_method_extra_optional_parameters_lib.dart'
+ as method_extra_optional_parameters_lib;
+import 'main_declaration_method_named_parameters_lib.dart'
+ as method_named_parameters_lib;
+import 'main_declaration_method_one_optional_parameter_lib.dart'
+ as method_one_optional_parameter_lib;
+import 'main_declaration_method_one_parameter_lib.dart'
+ as method_one_parameter_lib;
+import 'main_declaration_method_one_required_optional_lib.dart'
+ as method_one_required_optional_lib;
+import 'main_declaration_method_required_named_parameters_lib.dart'
+ as method_required_named_parameters_lib;
+import 'main_declaration_method_too_many_parameters_lib.dart'
+ as method_too_many_parameters_lib;
+import 'main_declaration_method_two_optional_parameters_lib.dart'
+ as method_two_optional_parameters_lib;
+import 'main_declaration_method_two_parameters_lib.dart'
+ as method_two_parameters_lib;
+import 'main_declaration_method_wrong_parameter_type_lib.dart'
+ as method_wrong_parameter_type_lib;
+import 'main_declaration_setter_lib.dart' as setter_lib;
+import 'main_declaration_typedef_lib.dart' as typedef_lib;
+
+main() {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration.dart.outline.expect b/pkg/front_end/testcases/nnbd/main_declaration.dart.outline.expect
new file mode 100644
index 0000000..60101d4
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration.dart.outline.expect
@@ -0,0 +1,195 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → self2::main
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+
+static field () → void main;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+
+static get main() → () → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra]) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args}) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args]) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other]) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args}) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args, dynamic other]) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+
+static set main(() → void f) → void
+ ;
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+
+typedef main = () → void;
diff --git a/pkg/front_end/testcases/nnbd/main_declaration.dart.strong.expect b/pkg/front_end/testcases/nnbd/main_declaration.dart.strong.expect
new file mode 100644
index 0000000..bef2df6
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration.dart.strong.expect
@@ -0,0 +1,191 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → self2::main
+ : super core::Object::•()
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+import "dart:core" as core;
+
+static field () → void main = () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+import "dart:core" as core;
+
+static get main() → () → void
+ return () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args = #C2}) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args = #C1}) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args = #C2, dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+
+static set main(() → void f) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+
+typedef main = () → void;
+
+constants {
+ #C1 = null
+ #C2 = <core::String>[]
+}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration.dart.strong.transformed.expect b/pkg/front_end/testcases/nnbd/main_declaration.dart.strong.transformed.expect
new file mode 100644
index 0000000..bef2df6
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration.dart.strong.transformed.expect
@@ -0,0 +1,191 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → self2::main
+ : super core::Object::•()
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+import "dart:core" as core;
+
+static field () → void main = () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+import "dart:core" as core;
+
+static get main() → () → void
+ return () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args = #C2}) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args = #C1}) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args = #C2, dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+
+static set main(() → void f) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+
+typedef main = () → void;
+
+constants {
+ #C1 = null
+ #C2 = <core::String>[]
+}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration.dart.textual_outline.expect b/pkg/front_end/testcases/nnbd/main_declaration.dart.textual_outline.expect
new file mode 100644
index 0000000..13c6b88
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration.dart.textual_outline.expect
@@ -0,0 +1,28 @@
+import 'main_declaration_class_lib.dart' as class_lib;
+import 'main_declaration_extension_lib.dart' as extension_lib;
+import 'main_declaration_field_lib.dart' as field_lib;
+import 'main_declaration_getter_lib.dart' as getter_lib;
+import 'main_declaration_method_extra_optional_parameters_lib.dart'
+ as method_extra_optional_parameters_lib;
+import 'main_declaration_method_named_parameters_lib.dart'
+ as method_named_parameters_lib;
+import 'main_declaration_method_one_optional_parameter_lib.dart'
+ as method_one_optional_parameter_lib;
+import 'main_declaration_method_one_parameter_lib.dart'
+ as method_one_parameter_lib;
+import 'main_declaration_method_one_required_optional_lib.dart'
+ as method_one_required_optional_lib;
+import 'main_declaration_method_required_named_parameters_lib.dart'
+ as method_required_named_parameters_lib;
+import 'main_declaration_method_too_many_parameters_lib.dart'
+ as method_too_many_parameters_lib;
+import 'main_declaration_method_two_optional_parameters_lib.dart'
+ as method_two_optional_parameters_lib;
+import 'main_declaration_method_two_parameters_lib.dart'
+ as method_two_parameters_lib;
+import 'main_declaration_method_wrong_parameter_type_lib.dart'
+ as method_wrong_parameter_type_lib;
+import 'main_declaration_setter_lib.dart' as setter_lib;
+import 'main_declaration_typedef_lib.dart' as typedef_lib;
+
+main() {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration.dart.textual_outline_modelled.expect b/pkg/front_end/testcases/nnbd/main_declaration.dart.textual_outline_modelled.expect
new file mode 100644
index 0000000..13c6b88
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration.dart.textual_outline_modelled.expect
@@ -0,0 +1,28 @@
+import 'main_declaration_class_lib.dart' as class_lib;
+import 'main_declaration_extension_lib.dart' as extension_lib;
+import 'main_declaration_field_lib.dart' as field_lib;
+import 'main_declaration_getter_lib.dart' as getter_lib;
+import 'main_declaration_method_extra_optional_parameters_lib.dart'
+ as method_extra_optional_parameters_lib;
+import 'main_declaration_method_named_parameters_lib.dart'
+ as method_named_parameters_lib;
+import 'main_declaration_method_one_optional_parameter_lib.dart'
+ as method_one_optional_parameter_lib;
+import 'main_declaration_method_one_parameter_lib.dart'
+ as method_one_parameter_lib;
+import 'main_declaration_method_one_required_optional_lib.dart'
+ as method_one_required_optional_lib;
+import 'main_declaration_method_required_named_parameters_lib.dart'
+ as method_required_named_parameters_lib;
+import 'main_declaration_method_too_many_parameters_lib.dart'
+ as method_too_many_parameters_lib;
+import 'main_declaration_method_two_optional_parameters_lib.dart'
+ as method_two_optional_parameters_lib;
+import 'main_declaration_method_two_parameters_lib.dart'
+ as method_two_parameters_lib;
+import 'main_declaration_method_wrong_parameter_type_lib.dart'
+ as method_wrong_parameter_type_lib;
+import 'main_declaration_setter_lib.dart' as setter_lib;
+import 'main_declaration_typedef_lib.dart' as typedef_lib;
+
+main() {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration.dart.weak.expect b/pkg/front_end/testcases/nnbd/main_declaration.dart.weak.expect
new file mode 100644
index 0000000..c850a85
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration.dart.weak.expect
@@ -0,0 +1,191 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → self2::main
+ : super core::Object::•()
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+import "dart:core" as core;
+
+static field () → void main = () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+import "dart:core" as core;
+
+static get main() → () → void
+ return () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args = #C2}) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args = #C1}) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args = #C2, dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+
+static set main(() → void f) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+
+typedef main = () → void;
+
+constants {
+ #C1 = null
+ #C2 = <core::String*>[]
+}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration.dart.weak.transformed.expect b/pkg/front_end/testcases/nnbd/main_declaration.dart.weak.transformed.expect
new file mode 100644
index 0000000..c850a85
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration.dart.weak.transformed.expect
@@ -0,0 +1,191 @@
+library /*isNonNullableByDefault*/;
+import self as self;
+
+import "org-dartlang-testcase:///main_declaration_class_lib.dart" as class_lib;
+import "org-dartlang-testcase:///main_declaration_extension_lib.dart" as extension_lib;
+import "org-dartlang-testcase:///main_declaration_field_lib.dart" as field_lib;
+import "org-dartlang-testcase:///main_declaration_getter_lib.dart" as getter_lib;
+import "org-dartlang-testcase:///main_declaration_method_extra_optional_parameters_lib.dart" as method_extra_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_named_parameters_lib.dart" as method_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_optional_parameter_lib.dart" as method_one_optional_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_parameter_lib.dart" as method_one_parameter_lib;
+import "org-dartlang-testcase:///main_declaration_method_one_required_optional_lib.dart" as method_one_required_optional_lib;
+import "org-dartlang-testcase:///main_declaration_method_required_named_parameters_lib.dart" as method_required_named_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_too_many_parameters_lib.dart" as method_too_many_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_optional_parameters_lib.dart" as method_two_optional_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_two_parameters_lib.dart" as method_two_parameters_lib;
+import "org-dartlang-testcase:///main_declaration_method_wrong_parameter_type_lib.dart" as method_wrong_parameter_type_lib;
+import "org-dartlang-testcase:///main_declaration_setter_lib.dart" as setter_lib;
+import "org-dartlang-testcase:///main_declaration_typedef_lib.dart" as typedef_lib;
+
+static method main() → dynamic {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart:5:7: Error: The 'main' declaration must be a function declaration.
+// class main /* error */ {}
+// ^
+//
+import self as self2;
+import "dart:core" as core;
+
+class main extends core::Object {
+ synthetic constructor •() → self2::main
+ : super core::Object::•()
+ ;
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart:5:11: Error: The 'main' declaration must be a function declaration.
+// extension main /* error */ on Object {}
+// ^
+//
+import self as self3;
+import "dart:core" as core;
+
+extension main on core::Object {
+}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart:5:17: Error: The 'main' declaration must be a function declaration.
+// void Function() main /* error */ = () {};
+// ^^^^
+//
+import self as self4;
+import "dart:core" as core;
+
+static field () → void main = () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart:5:21: Error: The 'main' declaration must be a function declaration.
+// void Function() get main /* error */ => () {};
+// ^^^^
+//
+import self as self5;
+import "dart:core" as core;
+
+static get main() → () → void
+ return () → core::Null? {};
+
+library /*isNonNullableByDefault*/;
+import self as self6;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other, [dynamic extra = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self7;
+import "dart:core" as core;
+
+static method main({core::List<core::String> args = #C2}) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self8;
+import "dart:core" as core;
+
+static method main([core::List<core::String>? args = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self9;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self10;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, [dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart:5:6: Error: The 'main' method cannot have required named parameters.
+// void main({required List<String> args}) /* error */ {}
+// ^^^^
+//
+import self as self11;
+import "dart:core" as core;
+
+static method main({required core::List<core::String> args = #C1}) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart:5:6: Error: The 'main' method must have at most 2 required parameters.
+// void main(List<String> args, a, b) /* error */ {}
+// ^^^^
+//
+import self as self12;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic a, dynamic b) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self13;
+import "dart:core" as core;
+
+static method main([core::List<core::String> args = #C2, dynamic other = #C1]) → void {}
+
+library /*isNonNullableByDefault*/;
+import self as self14;
+import "dart:core" as core;
+
+static method main(core::List<core::String> args, dynamic other) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart:5:6: Error: The type 'Set<String>' of the first parameter of the 'main' method is not a supertype of 'List<String>'.
+// - 'Set' is from 'dart:core'.
+// - 'List' is from 'dart:core'.
+// void main(Set<String> args) /* error */ {}
+// ^^^^
+//
+import self as self15;
+import "dart:core" as core;
+
+static method main(core::Set<core::String> args) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart:5:10: Error: The 'main' declaration must be a function declaration.
+// void set main(void Function() f) /* error */ {}
+// ^^^^
+//
+import self as self16;
+
+static set main(() → void f) → void {}
+
+library /*isNonNullableByDefault*/;
+//
+// Problems in library:
+//
+// pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart:5:9: Error: The 'main' declaration must be a function declaration.
+// typedef main /* error */ = void Function();
+// ^
+//
+import self as self17;
+
+typedef main = () → void;
+
+constants {
+ #C1 = null
+ #C2 = <core::String*>[]
+}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart
new file mode 100644
index 0000000..3adbd2d
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_class_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+class main /* error */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart
new file mode 100644
index 0000000..5ac4335
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_extension_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+extension main /* error */ on Object {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart
new file mode 100644
index 0000000..a90670e
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_field_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void Function() main /* error */ = () {};
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart
new file mode 100644
index 0000000..fb93e96
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_getter_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void Function() get main /* error */ => () {};
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_extra_optional_parameters_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_extra_optional_parameters_lib.dart
new file mode 100644
index 0000000..1d64aba
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_extra_optional_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main(List<String> args, other, [extra]) /* ok */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_named_parameters_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_named_parameters_lib.dart
new file mode 100644
index 0000000..22ff181
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_named_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main({List<String> args = const []}) /* ok */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_one_optional_parameter_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_one_optional_parameter_lib.dart
new file mode 100644
index 0000000..bcdd265
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_one_optional_parameter_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main([List<String>? args]) /* ok */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_one_parameter_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_one_parameter_lib.dart
new file mode 100644
index 0000000..1c04bbf
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_one_parameter_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main(List<String> args) /* ok */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_one_required_optional_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_one_required_optional_lib.dart
new file mode 100644
index 0000000..1a18bcb
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_one_required_optional_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main(List<String> args, [other]) /* ok */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart
new file mode 100644
index 0000000..705bf05
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_required_named_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main({required List<String> args}) /* error */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart
new file mode 100644
index 0000000..9fc54c9
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_too_many_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main(List<String> args, a, b) /* error */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_two_optional_parameters_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_two_optional_parameters_lib.dart
new file mode 100644
index 0000000..5659662
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_two_optional_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main([List<String> args = const [], other]) /* ok */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_two_parameters_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_two_parameters_lib.dart
new file mode 100644
index 0000000..d737d25
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_two_parameters_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main(List<String> args, other) /* ok */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart
new file mode 100644
index 0000000..c0a8f34
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_method_wrong_parameter_type_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main(Set<String> args) /* error */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart
new file mode 100644
index 0000000..d9fd5bc
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_setter_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void set main(void Function() f) /* error */ {}
diff --git a/pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart b/pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart
new file mode 100644
index 0000000..d0ea0fa
--- /dev/null
+++ b/pkg/front_end/testcases/nnbd/main_declaration_typedef_lib.dart
@@ -0,0 +1,5 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+typedef main /* error */ = void Function();
diff --git a/pkg/front_end/testcases/old_dills/.gitignore b/pkg/front_end/testcases/old_dills/.gitignore
deleted file mode 100644
index e449e17..0000000
--- a/pkg/front_end/testcases/old_dills/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-dills
diff --git a/pkg/front_end/testcases/old_dills/old_dills.status b/pkg/front_end/testcases/old_dills/old_dills.status
deleted file mode 100644
index e22cfe5..0000000
--- a/pkg/front_end/testcases/old_dills/old_dills.status
+++ /dev/null
@@ -1,3 +0,0 @@
-# Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
-# for details. All rights reserved. Use of this source code is governed by a
-# BSD-style license that can be found in the LICENSE.md file.
diff --git a/pkg/front_end/testing.json b/pkg/front_end/testing.json
index 418cb27..47f67ff 100644
--- a/pkg/front_end/testing.json
+++ b/pkg/front_end/testing.json
@@ -252,17 +252,6 @@
"exclude": []
},
{
- "name": "old_dill",
- "kind": "Chain",
- "source": "test/old_dill_suite.dart",
- "path": "testcases/old_dills/dills/",
- "status": "testcases/old_dills/old_dills.status",
- "pattern": [
- ".*\\.dill$"
- ],
- "exclude": []
- },
- {
"name": "parser",
"kind": "Chain",
"source": "test/parser_suite.dart",
diff --git a/pkg/kernel/tool/smoke_test_quick.dart b/pkg/kernel/tool/smoke_test_quick.dart
index 53cfae1..bf32ec3 100644
--- a/pkg/kernel/tool/smoke_test_quick.dart
+++ b/pkg/kernel/tool/smoke_test_quick.dart
@@ -11,7 +11,6 @@
main(List<String> args) async {
Stopwatch stopwatch = new Stopwatch()..start();
List<Future> futures = new List<Future>();
- futures.add(run("pkg/front_end/test/old_dill_suite.dart", ["--checkDill"]));
futures.add(run("pkg/front_end/test/spelling_test_src_suite.dart",
["--", "spelling_test_src/kernel/..."]));
await Future.wait(futures);
diff --git a/runtime/lib/object.cc b/runtime/lib/object.cc
index 9710b64..e45c42d 100644
--- a/runtime/lib/object.cc
+++ b/runtime/lib/object.cc
@@ -497,9 +497,14 @@
InvocationMirror::Kind kind;
InvocationMirror::DecodeType(invocation_type.Value(), &level, &kind);
- Function& function = Function::Handle();
+ Function& function = Function::Handle(zone);
if (receiver.IsType()) {
- Class& cls = Class::Handle(Type::Cast(receiver).type_class());
+ const auto& cls = Class::Handle(zone, Type::Cast(receiver).type_class());
+ const auto& error = Error::Handle(zone, cls.EnsureIsFinalized(thread));
+ if (!error.IsNull()) {
+ Exceptions::PropagateError(error);
+ UNREACHABLE();
+ }
if (level == InvocationMirror::kConstructor) {
function = cls.LookupConstructor(method_name);
if (function.IsNull()) {
@@ -511,7 +516,7 @@
} else if (receiver.IsClosure()) {
function = Closure::Cast(receiver).function();
} else {
- Class& cls = Class::Handle(receiver.clazz());
+ auto& cls = Class::Handle(zone, receiver.clazz());
if (level == InvocationMirror::kSuper) {
cls = cls.SuperClass();
}
diff --git a/runtime/tests/vm/dart/regress43666_test.dart b/runtime/tests/vm/dart/regress43666_test.dart
new file mode 100644
index 0000000..49bb218
--- /dev/null
+++ b/runtime/tests/vm/dart/regress43666_test.dart
@@ -0,0 +1,23 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:expect/expect.dart';
+
+class Foo {
+ void bar() {}
+}
+
+void main(List<String> arguments) {
+ dynamic exception = null;
+ try {
+ final typeObject = Foo as dynamic;
+ print(typeObject.bar);
+ } catch (e) {
+ exception = e;
+ }
+ Expect.isNotNull(exception);
+ Expect.isTrue(exception is NoSuchMethodError);
+ // The NoSuchMethodError.toString() in the regression caused a crash.
+ Expect.isTrue(exception.toString().contains('NoSuchMethodError'));
+}
diff --git a/runtime/tests/vm/dart_2/regress43666_test.dart b/runtime/tests/vm/dart_2/regress43666_test.dart
new file mode 100644
index 0000000..49bb218
--- /dev/null
+++ b/runtime/tests/vm/dart_2/regress43666_test.dart
@@ -0,0 +1,23 @@
+// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:expect/expect.dart';
+
+class Foo {
+ void bar() {}
+}
+
+void main(List<String> arguments) {
+ dynamic exception = null;
+ try {
+ final typeObject = Foo as dynamic;
+ print(typeObject.bar);
+ } catch (e) {
+ exception = e;
+ }
+ Expect.isNotNull(exception);
+ Expect.isTrue(exception is NoSuchMethodError);
+ // The NoSuchMethodError.toString() in the regression caused a crash.
+ Expect.isTrue(exception.toString().contains('NoSuchMethodError'));
+}
diff --git a/runtime/vm/service.cc b/runtime/vm/service.cc
index 2c7a938..820e53f 100644
--- a/runtime/vm/service.cc
+++ b/runtime/vm/service.cc
@@ -986,7 +986,6 @@
Thread* thread = Thread::Current();
Isolate* isolate = thread->isolate();
ASSERT(isolate != NULL);
- ASSERT(!Isolate::IsSystemIsolate(isolate));
if (FLAG_trace_service) {
OS::PrintErr(
diff --git a/runtime/vm/tagged_pointer.h b/runtime/vm/tagged_pointer.h
index e1f6c15..0cd8548 100644
--- a/runtime/vm/tagged_pointer.h
+++ b/runtime/vm/tagged_pointer.h
@@ -224,7 +224,6 @@
: base##Ptr(other) {} \
klass##Ptr() : base##Ptr() {} \
explicit constexpr klass##Ptr(uword tagged) : base##Ptr(tagged) {} \
- explicit constexpr klass##Ptr(intptr_t tagged) : base##Ptr(tagged) {} \
constexpr klass##Ptr(std::nullptr_t) : base##Ptr(nullptr) {} /* NOLINT */ \
explicit klass##Ptr(const ObjectLayout* untagged) \
: base##Ptr(reinterpret_cast<uword>(untagged) + kHeapObjectTag) {} \
diff --git a/sdk/lib/collection/set.dart b/sdk/lib/collection/set.dart
index 1eb7491..0a6ccbf 100644
--- a/sdk/lib/collection/set.dart
+++ b/sdk/lib/collection/set.dart
@@ -294,7 +294,7 @@
/// Implementations of `Set` using this base should consider also implementing
/// `clear` in constant time. The default implementation works by removing every
/// element.
-abstract class SetBase<E> extends Object with SetMixin<E> {
+abstract class SetBase<E> with SetMixin<E> {
/// Converts a [Set] to a [String].
///
/// Converts [set] to a string by converting each element to a string (by
@@ -308,10 +308,7 @@
}
/// Common internal implementation of some [Set] methods.
-// TODO(35548): Make this mix-in SetMixin, by adding `with SetMixin<E>`
-// and removing the copied members below,
-// when analyzer supports const constructors for mixin applications.
-abstract class _SetBase<E> implements Set<E> {
+abstract class _SetBase<E> with SetMixin<E> {
// The following two methods override the ones in SetBase.
// It's possible to be more efficient if we have a way to create an empty
// set of the correct type.
@@ -341,228 +338,6 @@
// Subclasses can optimize this further.
Set<E> toSet() => _newSet()..addAll(this);
-
- /// TODO(35548): Remove the following declarations again when the analyzer
- /// supports mixins with const constructors, and mix in `SetMixin` instead.
-
- bool get isEmpty => length == 0;
-
- bool get isNotEmpty => length != 0;
-
- Iterable<E> followedBy(Iterable<E> other) =>
- FollowedByIterable<E>.firstEfficient(this, other);
-
- Iterable<T> whereType<T>() => WhereTypeIterable<T>(this);
-
- void clear() {
- removeAll(toList());
- }
-
- void addAll(Iterable<E> elements) {
- for (E element in elements) add(element);
- }
-
- void removeAll(Iterable<Object?> elements) {
- for (Object? element in elements) remove(element);
- }
-
- void retainAll(Iterable<Object?> elements) {
- // Create a copy of the set, remove all of elements from the copy,
- // then remove all remaining elements in copy from this.
- Set<E> toRemove = toSet();
- for (Object? o in elements) {
- toRemove.remove(o);
- }
- removeAll(toRemove);
- }
-
- void removeWhere(bool test(E element)) {
- List<Object?> toRemove = [];
- for (E element in this) {
- if (test(element)) toRemove.add(element);
- }
- removeAll(toRemove);
- }
-
- void retainWhere(bool test(E element)) {
- List<Object?> toRemove = [];
- for (E element in this) {
- if (!test(element)) toRemove.add(element);
- }
- removeAll(toRemove);
- }
-
- bool containsAll(Iterable<Object?> other) {
- for (Object? o in other) {
- if (!contains(o)) return false;
- }
- return true;
- }
-
- Set<E> union(Set<E> other) {
- return toSet()..addAll(other);
- }
-
- List<E> toList({bool growable = true}) =>
- List<E>.of(this, growable: growable);
-
- Iterable<T> map<T>(T f(E element)) =>
- EfficientLengthMappedIterable<E, T>(this, f);
-
- E get single {
- if (length > 1) throw IterableElementError.tooMany();
- Iterator<E> it = iterator;
- if (!it.moveNext()) throw IterableElementError.noElement();
- E result = it.current;
- return result;
- }
-
- String toString() => IterableBase.iterableToFullString(this, '{', '}');
-
- Iterable<E> where(bool f(E element)) => WhereIterable<E>(this, f);
-
- Iterable<T> expand<T>(Iterable<T> f(E element)) =>
- ExpandIterable<E, T>(this, f);
-
- void forEach(void f(E element)) {
- for (E element in this) f(element);
- }
-
- E reduce(E combine(E value, E element)) {
- Iterator<E> iterator = this.iterator;
- if (!iterator.moveNext()) {
- throw IterableElementError.noElement();
- }
- E value = iterator.current;
- while (iterator.moveNext()) {
- value = combine(value, iterator.current);
- }
- return value;
- }
-
- T fold<T>(T initialValue, T combine(T previousValue, E element)) {
- var value = initialValue;
- for (E element in this) value = combine(value, element);
- return value;
- }
-
- bool every(bool f(E element)) {
- for (E element in this) {
- if (!f(element)) return false;
- }
- return true;
- }
-
- String join([String separator = ""]) {
- Iterator<E> iterator = this.iterator;
- if (!iterator.moveNext()) return "";
- StringBuffer buffer = StringBuffer();
- if (separator == null || separator == "") {
- do {
- buffer.write(iterator.current);
- } while (iterator.moveNext());
- } else {
- buffer.write(iterator.current);
- while (iterator.moveNext()) {
- buffer.write(separator);
- buffer.write(iterator.current);
- }
- }
- return buffer.toString();
- }
-
- bool any(bool test(E element)) {
- for (E element in this) {
- if (test(element)) return true;
- }
- return false;
- }
-
- Iterable<E> take(int n) {
- return TakeIterable<E>(this, n);
- }
-
- Iterable<E> takeWhile(bool test(E value)) {
- return TakeWhileIterable<E>(this, test);
- }
-
- Iterable<E> skip(int n) {
- return SkipIterable<E>(this, n);
- }
-
- Iterable<E> skipWhile(bool test(E value)) {
- return SkipWhileIterable<E>(this, test);
- }
-
- E get first {
- Iterator<E> it = iterator;
- if (!it.moveNext()) {
- throw IterableElementError.noElement();
- }
- return it.current;
- }
-
- E get last {
- Iterator<E> it = iterator;
- if (!it.moveNext()) {
- throw IterableElementError.noElement();
- }
- E result;
- do {
- result = it.current;
- } while (it.moveNext());
- return result;
- }
-
- E firstWhere(bool test(E value), {E Function()? orElse}) {
- for (E element in this) {
- if (test(element)) return element;
- }
- if (orElse != null) return orElse();
- throw IterableElementError.noElement();
- }
-
- E lastWhere(bool test(E value), {E Function()? orElse}) {
- late E result;
- bool foundMatching = false;
- for (E element in this) {
- if (test(element)) {
- result = element;
- foundMatching = true;
- }
- }
- if (foundMatching) return result;
- if (orElse != null) return orElse();
- throw IterableElementError.noElement();
- }
-
- E singleWhere(bool test(E value), {E Function()? orElse}) {
- late E result;
- bool foundMatching = false;
- for (E element in this) {
- if (test(element)) {
- if (foundMatching) {
- throw IterableElementError.tooMany();
- }
- result = element;
- foundMatching = true;
- }
- }
- if (foundMatching) return result;
- if (orElse != null) return orElse();
- throw IterableElementError.noElement();
- }
-
- E elementAt(int index) {
- ArgumentError.checkNotNull(index, "index");
- RangeError.checkNotNegative(index, "index");
- int elementIndex = 0;
- for (E element in this) {
- if (index == elementIndex) return element;
- elementIndex++;
- }
- throw RangeError.index(index, this, "index", null, elementIndex);
- }
}
/// Class used to implement const sets.
diff --git a/tests/language/main/main_test.dart b/tests/language/main/main_test.dart
index da3b57e..6b5c24c 100644
--- a/tests/language/main/main_test.dart
+++ b/tests/language/main/main_test.dart
@@ -6,7 +6,7 @@
a // //# 01: ok
a, b // //# 02: ok
-a, b, c // //# 03: ok
+a, b, c // //# 03: compile-time error
a, b, {c} //# 04: ok
a, b, [c] //# 05: ok
diff --git a/tests/language/null_aware/null_shortening_test.dart b/tests/language/null_aware/null_shortening_test.dart
index f4ce95c..b3510a5 100644
--- a/tests/language/null_aware/null_shortening_test.dart
+++ b/tests/language/null_aware/null_shortening_test.dart
@@ -159,8 +159,8 @@
c1q?.cq!.expectStaticType<Exactly<C1>>();
(c1q?.cq!).expectStaticType<Exactly<C1?>>();
(c1q?.cq)!.expectStaticType<Exactly<C1>>();
- c1q?.cn!.c.expectStaticType<Exactly<C1>>();
- (c1q?.cn!.c).expectStaticType<Exactly<C1?>>();
+ c1q?.cq!.c.expectStaticType<Exactly<C1>>();
+ (c1q?.cq!.c).expectStaticType<Exactly<C1?>>();
c1q?[1].expectStaticType<Exactly<C1>>();
(c1q?[1]).expectStaticType<Exactly<C1?>>();
diff --git a/tools/VERSION b/tools/VERSION
index 6113aa7..81db08d 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -27,5 +27,5 @@
MAJOR 2
MINOR 11
PATCH 0
-PRERELEASE 186
+PRERELEASE 187
PRERELEASE_PATCH 0
\ No newline at end of file
