library;
//
// Problems in library:
//
// pkg/front_end/testcases/general/future_return.dart:11:7: Error: Functions marked 'async' must have a return type assignable to 'Future'.
// Class returnClass() async => new Class();
//       ^^^^^^^^^^^
//
// pkg/front_end/testcases/general/future_return.dart:17:7: Error: Functions marked 'async' must have a return type assignable to 'Future'.
// Class returnClassFromDynamic() async => returnDynamic();
//       ^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/general/future_return.dart:23:7: Error: Functions marked 'async' must have a return type assignable to 'Future'.
// Class returnClassFromFutureClass() async => returnFutureClass();
//       ^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/general/future_return.dart:30:7: Error: Functions marked 'async' must have a return type assignable to 'Future'.
// Class returnClassFromFutureOrClass() async => returnFutureOrClass();
//       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
import self as self;
import "dart:core" as core;
import "dart:async" as asy;
import "dart:_internal" as _in;

import "dart:async";

class Class extends core::Object {
  synthetic constructor •() → self::Class*
    : 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 returnDynamic() → dynamic
  return new self::Class::•();
static method returnClass() → self::Class* /* 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;
  function :async_op(dynamic :result_or_exception, dynamic :stack_trace) → dynamic yielding 
    try {
      #L1:
      {
        :return_value = new self::Class::•();
        break #L1;
      }
      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;
}
static method returnFutureClass() → asy::Future<self::Class*>* /* originally async */ {
  final asy::_Future<self::Class*>* :async_future = new asy::_Future::•<self::Class*>();
  core::bool* :is_sync = false;
  self::Class? :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 = new self::Class::•();
        break #L2;
      }
      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;
}
static method returnFutureOrClass() → FutureOr<self::Class*>* /* originally async */ {
  final asy::_Future<self::Class*>* :async_future = new asy::_Future::•<self::Class*>();
  core::bool* :is_sync = false;
  self::Class? :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 {
      #L3:
      {
        :return_value = new self::Class::•();
        break #L3;
      }
      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;
}
static method returnClassFromDynamic() → self::Class* /* 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 {
      #L4:
      {
        :return_value = self::returnDynamic() as{TypeError} FutureOr<self::Class*>*;
        break #L4;
      }
      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 returnFutureClassDynamic() → asy::Future<self::Class*>* /* originally async */ {
  final asy::_Future<self::Class*>* :async_future = new asy::_Future::•<self::Class*>();
  core::bool* :is_sync = false;
  FutureOr<self::Class*>* :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 {
      #L5:
      {
        :return_value = self::returnDynamic() as{TypeError} FutureOr<self::Class*>*;
        break #L5;
      }
      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 returnFutureOrClassDynamic() → FutureOr<self::Class*>* /* originally async */ {
  final asy::_Future<self::Class*>* :async_future = new asy::_Future::•<self::Class*>();
  core::bool* :is_sync = false;
  FutureOr<self::Class*>* :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 {
      #L6:
      {
        :return_value = self::returnDynamic() as{TypeError} FutureOr<self::Class*>*;
        break #L6;
      }
      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 returnClassFromFutureClass() → self::Class* /* 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 {
      #L7:
      {
        :return_value = self::returnFutureClass();
        break #L7;
      }
      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 returnFutureClassFromFutureClass() → asy::Future<self::Class*>* /* originally async */ {
  final asy::_Future<self::Class*>* :async_future = new asy::_Future::•<self::Class*>();
  core::bool* :is_sync = false;
  FutureOr<self::Class*>* :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 {
      #L8:
      {
        :return_value = self::returnFutureClass();
        break #L8;
      }
      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 returnFutureOrClassFromFutureClass() → FutureOr<self::Class*>* /* originally async */ {
  final asy::_Future<self::Class*>* :async_future = new asy::_Future::•<self::Class*>();
  core::bool* :is_sync = false;
  FutureOr<self::Class*>* :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 {
      #L9:
      {
        :return_value = self::returnFutureClass();
        break #L9;
      }
      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 returnClassFromFutureOrClass() → self::Class* /* 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 {
      #L10:
      {
        :return_value = self::returnFutureOrClass();
        break #L10;
      }
      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 returnFutureClassFromFutureOrClass() → asy::Future<self::Class*>* /* originally async */ {
  final asy::_Future<self::Class*>* :async_future = new asy::_Future::•<self::Class*>();
  core::bool* :is_sync = false;
  FutureOr<self::Class*>* :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 {
      #L11:
      {
        :return_value = self::returnFutureOrClass();
        break #L11;
      }
      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 returnFutureOrClassFromFutureOrClass() → FutureOr<self::Class*>* /* originally async */ {
  final asy::_Future<self::Class*>* :async_future = new asy::_Future::•<self::Class*>();
  core::bool* :is_sync = false;
  FutureOr<self::Class*>* :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 {
      #L12:
      {
        :return_value = self::returnFutureOrClass();
        break #L12;
      }
      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 /* 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 {
      #L13:
      {
        [yield] let dynamic #t1 = asy::_awaitHelper(self::returnClass(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t2 = asy::_awaitHelper(self::returnFutureClass(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t3 = asy::_awaitHelper(self::returnFutureOrClass(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t4 = asy::_awaitHelper(self::returnClassFromDynamic(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t5 = asy::_awaitHelper(self::returnFutureClassDynamic(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t6 = asy::_awaitHelper(self::returnFutureOrClassDynamic(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t7 = asy::_awaitHelper(self::returnClassFromFutureClass(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t8 = asy::_awaitHelper(self::returnFutureClassFromFutureClass(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t9 = asy::_awaitHelper(self::returnFutureOrClassFromFutureClass(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t10 = asy::_awaitHelper(self::returnClassFromFutureOrClass(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t11 = asy::_awaitHelper(self::returnFutureClassFromFutureOrClass(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(:result_or_exception);
        [yield] let dynamic #t12 = asy::_awaitHelper(self::returnFutureOrClassFromFutureOrClass(), :async_op_then, :async_op_error) in null;
        _in::unsafeCast<self::Class*>(: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;
}