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| author | Albert Larsan <74931857+albertlarsan68@users.noreply.github.com> | 2023-01-05 09:13:28 +0100 |
|---|---|---|
| committer | Albert Larsan <74931857+albertlarsan68@users.noreply.github.com> | 2023-01-11 09:32:08 +0000 |
| commit | cf2dff2b1e3fa55fa5415d524200070d0d7aacfe (patch) | |
| tree | 40a88d9a46aaf3e8870676eb2538378b75a263eb /tests/ui/issues/issue-16774.rs | |
| parent | ca855e6e42787ecd062d81d53336fe6788ef51a9 (diff) | |
| download | rust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.tar.gz rust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.zip | |
Move /src/test to /tests
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 00000000000..2b308ef76e4 --- /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 }); +} |
