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 {
// ^
//
// pkg/front_end/testcases/regress/issue_34850.dart:14:16: Error: Functions marked 'async' must have a return type assignable to 'Future'.
// Future<List<>> f3() async {
//                ^^
//
import self as self;
import "dart:core" as core;
import "dart:async" as asy;

static method f1() → invalid-type {
  return null;
}
static method Future<List extends core::Object* = dynamic>() → invalid-type {}
static method f2() → dynamic /* originally async */ {
  final asy::_AsyncAwaitCompleter<dynamic>* :async_completer = new asy::_AsyncAwaitCompleter::•<dynamic>();
  asy::FutureOr<dynamic>* :return_value;
  dynamic :async_stack_trace;
  dynamic :async_op_then;
  dynamic :async_op_error;
  dynamic :await_jump_var = 0;
  dynamic :await_ctx_var;
  function :async_op([dynamic :result, dynamic :exception, dynamic :stack_trace]) → dynamic yielding 
    try {
      #L1:
      {
        :return_value = null;
        break #L1;
      }
      asy::_completeOnAsyncReturn(:async_completer, :return_value);
      return;
    }
    on dynamic catch(dynamic :exception, dynamic :stack_trace) {
      :async_completer.{asy::Completer::completeError}(:exception, :stack_trace);
    }
  :async_stack_trace = asy::_asyncStackTraceHelper(:async_op);
  :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
  :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
  :async_completer.start(:async_op);
  return :async_completer.{asy::Completer::future};
}
static method f3() → invalid-type /* originally async */ {
  final asy::_AsyncAwaitCompleter<dynamic>* :async_completer = new asy::_AsyncAwaitCompleter::•<dynamic>();
  asy::FutureOr<dynamic>* :return_value;
  dynamic :async_stack_trace;
  dynamic :async_op_then;
  dynamic :async_op_error;
  dynamic :await_jump_var = 0;
  dynamic :await_ctx_var;
  function :async_op([dynamic :result, dynamic :exception, dynamic :stack_trace]) → dynamic yielding 
    try {
      #L2:
      {
        :return_value = null;
        break #L2;
      }
      asy::_completeOnAsyncReturn(:async_completer, :return_value);
      return;
    }
    on dynamic catch(dynamic :exception, dynamic :stack_trace) {
      :async_completer.{asy::Completer::completeError}(:exception, :stack_trace);
    }
  :async_stack_trace = asy::_asyncStackTraceHelper(:async_op);
  :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
  :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
  :async_completer.start(:async_op);
  return :async_completer.{asy::Completer::future};
}
static method main() → dynamic /* originally async */ {
  final asy::_AsyncAwaitCompleter<dynamic>* :async_completer = new asy::_AsyncAwaitCompleter::•<dynamic>();
  asy::FutureOr<dynamic>* :return_value;
  dynamic :async_stack_trace;
  dynamic :async_op_then;
  dynamic :async_op_error;
  dynamic :await_jump_var = 0;
  dynamic :await_ctx_var;
  dynamic :saved_try_context_var0;
  function :async_op([dynamic :result, dynamic :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, :async_op) in null;
        core::print(:result);
        [yield] let dynamic #t2 = asy::_awaitHelper(self::f3(), :async_op_then, :async_op_error, :async_op) in null;
        core::print(:result);
      }
      asy::_completeOnAsyncReturn(:async_completer, :return_value);
      return;
    }
    on dynamic catch(dynamic :exception, dynamic :stack_trace) {
      :async_completer.{asy::Completer::completeError}(:exception, :stack_trace);
    }
  :async_stack_trace = asy::_asyncStackTraceHelper(:async_op);
  :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
  :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
  :async_completer.start(:async_op);
  return :async_completer.{asy::Completer::future};
}