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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/issues/issue-16774.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/issues/issue-16774.rs')
-rw-r--r-- | tests/ui/issues/issue-16774.rs | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-16774.rs b/tests/ui/issues/issue-16774.rs new file mode 100644 index 000000000..2b308ef76 --- /dev/null +++ b/tests/ui/issues/issue-16774.rs @@ -0,0 +1,45 @@ +// run-pass +#![feature(box_patterns)] + +use std::ops::{Deref, DerefMut}; + +struct X(Box<isize>); + +static mut DESTRUCTOR_RAN: bool = false; + +impl Drop for X { + fn drop(&mut self) { + unsafe { + assert!(!DESTRUCTOR_RAN); + DESTRUCTOR_RAN = true; + } + } +} + +impl Deref for X { + type Target = isize; + + fn deref(&self) -> &isize { + let &X(box ref x) = self; + x + } +} + +impl DerefMut for X { + fn deref_mut(&mut self) -> &mut isize { + let &mut X(box ref mut x) = self; + x + } +} + +fn main() { + { + let mut test = X(Box::new(5)); + { + let mut change = || { *test = 10 }; + change(); + } + assert_eq!(*test, 10); + } + assert!(unsafe { DESTRUCTOR_RAN }); +} |