| //! The mir-opt added in <https://github.com/rust-lang/rust/pull/128299> unfortunately seems to lead |
| //! to a miscompile (reported in <https://github.com/rust-lang/rust/issues/132353>, minimization |
| //! reproduced in this test file). |
| //@ revisions: release debug |
| // Note: it's not strictly cargo's release profile, but any non-zero opt-level was sufficient to |
| // reproduce the miscompile. |
| //@[release] compile-flags: -C opt-level=1 |
| //@[debug] compile-flags: -C opt-level=0 |
| //@ run-pass |
| |
| fn pop_min(mut score2head: Vec<Option<usize>>) -> Option<usize> { |
| loop { |
| if let Some(col) = score2head[0] { |
| score2head[0] = None; |
| return Some(col); |
| } |
| } |
| } |
| |
| fn main() { |
| let min = pop_min(vec![Some(1)]); |
| println!("min: {:?}", min); |
| // panic happened on 1.83.0 beta in release mode but not debug mode. |
| let _ = min.unwrap(); |
| } |
