library /*isNonNullableByDefault*/;
//
// Problems in library:
//
// pkg/front_end/testcases/nnbd_mixed/issue42181.dart:10:9: Error: The value 'null' can't be assigned to a variable of type 'int Function(int)' because 'int Function(int)' is not nullable.
//   F f = null; // Static error
//         ^
//
import self as self;
import "dart:core" as core;

import "org-dartlang-testcase:///issue42181_lib.dart";

static method f1(core::int x) → core::int?
  return x;
static method test() → void {
  (core::int*) → core::int* f = invalid-expression "pkg/front_end/testcases/nnbd_mixed/issue42181.dart:10:9: Error: The value 'null' can't be assigned to a variable of type 'int Function(int)' because 'int Function(int)' is not nullable.
  F f = null; // Static error
        ^" in null as{TypeError,ForNonNullableByDefault} (core::int*) → core::int*;
  f = #C1;
}
static method main() → dynamic {}

library;
import self as self2;
import "dart:core" as core;

typedef F = (core::int*) →* core::int*;

constants  {
  #C1 = static-tearoff self::f1
}