library;
//
// Problems in library:
//
// pkg/front_end/testcases/regress/issue_34850.dart:5:1: Error: Expected a declaration, but got '<'.
// <foo<
// ^
//
// pkg/front_end/testcases/regress/issue_34850.dart:7:1: Error: Expected '>' after this.
// int f1() {
// ^^^
//
// pkg/front_end/testcases/regress/issue_34850.dart:12:8: Error: Expected '>' after this.
// Future<List<int>> f2() async => null;
//        ^^^^
//
// pkg/front_end/testcases/regress/issue_34850.dart:12:1: Error: A function declaration needs an explicit list of parameters.
// Try adding a parameter list to the function declaration.
// Future<List<int>> f2() async => null;
// ^^^^^^
//
// pkg/front_end/testcases/regress/issue_34850.dart:12:19: Error: Expected '{' before this.
// Future<List<int>> f2() async => null;
//                   ^^
//
// pkg/front_end/testcases/regress/issue_34850.dart:14:13: Error: Expected a type, but got '>>'.
// Future<List<>> f3() async {
//             ^^
//
// pkg/front_end/testcases/regress/issue_34850.dart:5:2: Error: Type 'foo' not found.
// <foo<
//  ^^^
//
// pkg/front_end/testcases/regress/issue_34850.dart:5:2: Error: Expected 0 type arguments.
// <foo<
//  ^
//
// pkg/front_end/testcases/regress/issue_34850.dart:11:1: Error: Type 'foo' not found.
// foo
// ^^^
//
// pkg/front_end/testcases/regress/issue_34850.dart:14:1: Error: 'Future' isn't a type.
// Future<List<>> f3() async {
// ^^^^^^
// pkg/front_end/testcases/regress/issue_34850.dart:12:1: Context: This isn't a type.
// Future<List<int>> f2() async => null;
// ^^^^^^
//
// pkg/front_end/testcases/regress/issue_34850.dart:14:1: Error: Expected 0 type arguments.
// Future<List<>> f3() async {
// ^
//
import self as self;
import "dart:core" as core;
import "dart:async" as asy;
import "dart:_internal" as _in;

static method f1() → invalid-type {
  return null;
}
static method Future<List extends core::Object* = dynamic>() → invalid-type {}
static method f2() → dynamic /* futureValueType= dynamic */ /* originally async */ {
  final asy::_Future<dynamic>* :async_future = new asy::_Future::•<dynamic>();
  core::bool* :is_sync = false;
  FutureOr<dynamic>* :return_value;
  (dynamic) →* dynamic :async_op_then;
  (core::Object*, core::StackTrace*) →* dynamic :async_op_error;
  core::int* :await_jump_var = 0;
  dynamic :await_ctx_var;
  function :async_op(dynamic :result_or_exception, dynamic :stack_trace) → dynamic yielding 
    try {
      #L1:
      {
        :return_value = null;
        break #L1;
      }
      asy::_completeOnAsyncReturn(:async_future, :return_value, :is_sync);
      return;
    }
    on dynamic catch(dynamic exception, core::StackTrace* stack_trace) {
      asy::_completeOnAsyncError(:async_future, exception, stack_trace, :is_sync);
    }
  :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
  :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
  :async_op(null, null){() →* dynamic};
  :is_sync = true;
  return :async_future;
}
static method f3() → invalid-type /* futureValueType= invalid-type */ /* originally async */ {
  final asy::_Future<dynamic>* :async_future = new asy::_Future::•<dynamic>();
  core::bool* :is_sync = false;
  FutureOr<dynamic>* :return_value;
  (dynamic) →* dynamic :async_op_then;
  (core::Object*, core::StackTrace*) →* dynamic :async_op_error;
  core::int* :await_jump_var = 0;
  dynamic :await_ctx_var;
  function :async_op(dynamic :result_or_exception, dynamic :stack_trace) → dynamic yielding 
    try {
      #L2:
      {
        :return_value = null;
        break #L2;
      }
      asy::_completeOnAsyncReturn(:async_future, :return_value, :is_sync);
      return;
    }
    on dynamic catch(dynamic exception, core::StackTrace* stack_trace) {
      asy::_completeOnAsyncError(:async_future, exception, stack_trace, :is_sync);
    }
  :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
  :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
  :async_op(null, null){() →* dynamic};
  :is_sync = true;
  return :async_future;
}
static method main() → dynamic /* futureValueType= dynamic */ /* originally async */ {
  final asy::_Future<dynamic>* :async_future = new asy::_Future::•<dynamic>();
  core::bool* :is_sync = false;
  dynamic :return_value;
  (dynamic) →* dynamic :async_op_then;
  (core::Object*, core::StackTrace*) →* dynamic :async_op_error;
  core::int* :await_jump_var = 0;
  dynamic :await_ctx_var;
  dynamic :saved_try_context_var0;
  function :async_op(dynamic :result_or_exception, dynamic :stack_trace) → dynamic yielding 
    try {
      #L3:
      {
        core::print(self::f1());
        [yield] let dynamic #t1 = asy::_awaitHelper(self::f2(), :async_op_then, :async_op_error) in null;
        core::print(:result_or_exception);
        [yield] let dynamic #t2 = asy::_awaitHelper(self::f3(), :async_op_then, :async_op_error) in null;
        core::print(_in::unsafeCast<invalid-type>(:result_or_exception));
      }
      asy::_completeWithNoFutureOnAsyncReturn(:async_future, :return_value, :is_sync);
      return;
    }
    on dynamic catch(dynamic exception, core::StackTrace* stack_trace) {
      asy::_completeOnAsyncError(:async_future, exception, stack_trace, :is_sync);
    }
  :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
  :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
  :async_op(null, null){() →* dynamic};
  :is_sync = true;
  return :async_future;
}