library test /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;

typedef FunctionReturningNum = () → core::num;
static method test() → dynamic {
  core::int i = 1;
  dynamic o = 1;
  () → core::num a = () → core::int => i;
  () → core::num b = () → core::num => o as{TypeError,ForDynamic,ForNonNullableByDefault} core::num;
  () → core::num c = () → core::int {
    return i;
  };
  () → core::num d = () → core::num {
    return o as{TypeError,ForDynamic,ForNonNullableByDefault} core::num;
  };
}
static method main() → dynamic {}