mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 15:23:46 +00:00
a6fda3ee7f
Implements MCP 577.
31 lines
857 B
Rust
31 lines
857 B
Rust
// run-pass
|
|
// revisions: default mir-opt
|
|
//[default] compile-flags: -Zinline-mir=false
|
|
//[mir-opt] compile-flags: -Zmir-opt-level=4
|
|
|
|
use std::panic::Location;
|
|
|
|
struct Foo;
|
|
|
|
impl Foo {
|
|
#[inline(always)]
|
|
#[track_caller]
|
|
fn check_loc(&self, line: u32, col: u32) -> &Self {
|
|
let loc = Location::caller();
|
|
assert_eq!(loc.file(), file!(), "file mismatch");
|
|
assert_eq!(loc.line(), line, "line mismatch");
|
|
assert_eq!(loc.column(), col, "column mismatch");
|
|
self
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
// Tests that when `Location::caller` is used in a method chain,
|
|
// it points to the start of the correct call (the first character after the dot)
|
|
// instead of to the very first expression in the chain
|
|
let foo = Foo;
|
|
foo.
|
|
check_loc(line!(), 9).check_loc(line!(), 31)
|
|
.check_loc(line!(), 10);
|
|
}
|