message: test track_caller with fn ptrs
diff: @@ -19,15 +19,33 @@ macro_rules! caller_location_from_macro {
  () => (core::panic::Location::caller());
  }
  +fn test_fn_ptr() {
  + fn pass_to_ptr_call<T>(f: fn(T), x: T) {
  + f(x);
  + }
  +
  + #[track_caller]
  + fn tracked_unit(_: ()) {
  + let expected_line = line!() - 1;
  + let location = std::panic::Location::caller();
  + assert_eq!(location.file(), file!());
  + assert_eq!(location.line(), expected_line, "call shims report location as fn definition");
  + }
  +
  + pass_to_ptr_call(tracked_unit, ());
  +}
  +
  fn main() {
  let location = Location::caller();
  + let expected_line = line!() - 1;
  assert_eq!(location.file(), file!());
  - assert_eq!(location.line(), 23);
  + assert_eq!(location.line(), expected_line);
  assert_eq!(location.column(), 20);
  let tracked = tracked();
  + let expected_line = line!() - 1;
  assert_eq!(tracked.file(), file!());
  - assert_eq!(tracked.line(), 28);
  + assert_eq!(tracked.line(), expected_line);
  assert_eq!(tracked.column(), 19);
  let nested = nested_intrinsic();
  @@ -43,12 +61,16 @@ fn main() {
  // `Location::caller()` in a macro should behave similarly to `file!` and `line!`,
  // i.e. point to where the macro was invoked, instead of the macro itself.
  let inmacro = caller_location_from_macro!();
  + let expected_line = line!() - 1;
  assert_eq!(inmacro.file(), file!());
  - assert_eq!(inmacro.line(), 45);
  + assert_eq!(inmacro.line(), expected_line);
  assert_eq!(inmacro.column(), 19);
  let intrinsic = core::intrinsics::caller_location();
  + let expected_line = line!() - 1;
  assert_eq!(intrinsic.file(), file!());
  - assert_eq!(intrinsic.line(), 50);
  + assert_eq!(intrinsic.line(), expected_line);
  assert_eq!(intrinsic.column(), 21);
  +
  + test_fn_ptr();
  }
  