library test;
//
// Problems in library:
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:15:69: Error: A value of type 'String Function(String)' can't be assigned to a variable of type 'String Function(int)'.
//         l2 = /*error:INVALID_ASSIGNMENT*/ /*@ returnType=String* */ (String x) =>
//                                                                     ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:18:80: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
//         l3 = /*error:INVALID_ASSIGNMENT*/ /*@ returnType=String* */ (int x) => 3;
//                                                                                ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:20:47: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
//       return /*error:RETURN_OF_INVALID_TYPE*/ 3;
//                                               ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:29:13: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
//             3;
//             ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:31:47: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
//       return /*error:RETURN_OF_INVALID_TYPE*/ 3;
//                                               ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:34:47: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
//       return /*error:RETURN_OF_INVALID_TYPE*/ x;
//                                               ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:42:76: Error: A value of type 'List<String> Function(String)' can't be assigned to a variable of type 'List<String> Function(int)'.
//  - 'List' is from 'dart:core'.
//         l2 = /*error:INVALID_ASSIGNMENT*/ /*@ returnType=List<String*>* */ (String
//                                                                            ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:46:58: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
//               /*error:LIST_ELEMENT_TYPE_NOT_ASSIGNABLE*/ 3
//                                                          ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:50:52: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
//         /*error:LIST_ELEMENT_TYPE_NOT_ASSIGNABLE*/ 3
//                                                    ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:60:13: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
//             x;
//             ^
//
// pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:63:14: Error: The method 'substring' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing method, or defining a method named 'substring'.
//             .substring(3);
//              ^^^^^^^^^
//
import self as self;
import "dart:core" as core;

typedef Function2<contravariant S extends core::Object* = dynamic, T extends core::Object* = dynamic> = (S*) →* T*;
static method test() → void {
  {
    (core::int*) →* core::String* l0 = (core::int* x) → Null => null;
    (core::int*) →* core::String* l1 = (core::int* x) → core::String* => "hello";
    (core::int*) →* core::String* l2 = let final<BottomType> #t1 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:15:69: Error: A value of type 'String Function(String)' can't be assigned to a variable of type 'String Function(int)'.
        l2 = /*error:INVALID_ASSIGNMENT*/ /*@ returnType=String* */ (String x) =>
                                                                    ^" in ((core::String* x) → core::String* => "hello") as{TypeError} (core::int*) →* core::String*;
    (core::int*) →* core::String* l3 = (core::int* x) → core::String* => let final<BottomType> #t2 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:18:80: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
        l3 = /*error:INVALID_ASSIGNMENT*/ /*@ returnType=String* */ (int x) => 3;
                                                                               ^" in 3 as{TypeError} core::String*;
    (core::int*) →* core::String* l4 = (core::int* x) → core::String* {
      return let final<BottomType> #t3 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:20:47: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
      return /*error:RETURN_OF_INVALID_TYPE*/ 3;
                                              ^" in 3 as{TypeError} core::String*;
    };
  }
  {
    (core::int*) →* core::String* l0 = (core::int* x) → Null => null;
    (core::int*) →* core::String* l1 = (core::int* x) → core::String* => "hello";
    (core::int*) →* core::String* l2 = (core::int* x) → core::String* => let final<BottomType> #t4 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:29:13: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
            3;
            ^" in 3 as{TypeError} core::String*;
    (core::int*) →* core::String* l3 = (core::int* x) → core::String* {
      return let final<BottomType> #t5 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:31:47: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
      return /*error:RETURN_OF_INVALID_TYPE*/ 3;
                                              ^" in 3 as{TypeError} core::String*;
    };
    (core::int*) →* core::String* l4 = (core::int* x) → core::String* {
      return let final<BottomType> #t6 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:34:47: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
      return /*error:RETURN_OF_INVALID_TYPE*/ x;
                                              ^" in x as{TypeError} core::String*;
    };
  }
  {
    (core::int*) →* core::List<core::String*>* l0 = (core::int* x) → Null => null;
    (core::int*) →* core::List<core::String*>* l1 = (core::int* x) → core::List<core::String*>* => <core::String*>["hello"];
    (core::int*) →* core::List<core::String*>* l2 = let final<BottomType> #t7 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:42:76: Error: A value of type 'List<String> Function(String)' can't be assigned to a variable of type 'List<String> Function(int)'.
 - 'List' is from 'dart:core'.
        l2 = /*error:INVALID_ASSIGNMENT*/ /*@ returnType=List<String*>* */ (String
                                                                           ^" in ((core::String* x) → core::List<core::String*>* => <core::String*>["hello"]) as{TypeError} (core::int*) →* core::List<core::String*>*;
    (core::int*) →* core::List<core::String*>* l3 = (core::int* x) → core::List<core::String*>* => <core::String*>[let final<BottomType> #t8 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:46:58: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
              /*error:LIST_ELEMENT_TYPE_NOT_ASSIGNABLE*/ 3
                                                         ^" in 3 as{TypeError} core::String*];
    (core::int*) →* core::List<core::String*>* l4 = (core::int* x) → core::List<core::String*>* {
      return <core::String*>[let final<BottomType> #t9 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:50:52: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
        /*error:LIST_ELEMENT_TYPE_NOT_ASSIGNABLE*/ 3
                                                   ^" in 3 as{TypeError} core::String*];
    };
  }
  {
    (core::int*) →* core::int* l0 = (core::int* x) → core::int* => x;
    (core::int*) →* core::int* l1 = (core::int* x) → core::int* => x.{core::num::+}(1);
    (core::int*) →* core::String* l2 = (core::int* x) → core::String* => let final<BottomType> #t10 = invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:60:13: Error: A value of type 'int' can't be assigned to a variable of type 'String'.
            x;
            ^" in x as{TypeError} core::String*;
    (core::int*) →* core::String* l3 = (core::int* x) → core::String* => invalid-expression "pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart:63:14: Error: The method 'substring' isn't defined for the class 'int'.
Try correcting the name to the name of an existing method, or defining a method named 'substring'.
            .substring(3);
             ^^^^^^^^^" as{TypeError,ForDynamic} core::String*;
    (core::String*) →* core::String* l4 = (core::String* x) → core::String* => x.{core::String::substring}(3);
  }
}
static method main() → dynamic {}