rust/tests/ui/rfcs/rfc-2091-track-caller/track-caller-attribute.rs

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// run-pass
// revisions: default mir-opt
//[mir-opt] compile-flags: -Zmir-opt-level=4
use std::panic::Location;
#[track_caller]
fn tracked() -> &'static Location<'static> {
Location::caller()
}
fn nested_intrinsic() -> &'static Location<'static> {
Location::caller()
}
fn nested_tracked() -> &'static Location<'static> {
tracked()
}
fn main() {
let location = Location::caller();
assert_eq!(location.file(), file!());
assert_eq!(location.line(), 21);
assert_eq!(location.column(), 20);
let tracked = tracked();
assert_eq!(tracked.file(), file!());
assert_eq!(tracked.line(), 26);
assert_eq!(tracked.column(), 19);
let nested = nested_intrinsic();
assert_eq!(nested.file(), file!());
assert_eq!(nested.line(), 13);
assert_eq!(nested.column(), 5);
let contained = nested_tracked();
assert_eq!(contained.file(), file!());
assert_eq!(contained.line(), 17);
assert_eq!(contained.column(), 5);
}