diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/issues/issue-45697-1.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-45697-1.rs')
-rw-r--r-- | tests/ui/issues/issue-45697-1.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-45697-1.rs b/tests/ui/issues/issue-45697-1.rs new file mode 100644 index 000000000..b45f1170b --- /dev/null +++ b/tests/ui/issues/issue-45697-1.rs @@ -0,0 +1,25 @@ +// Test that assignments to an `&mut` pointer which is found in a +// borrowed (but otherwise non-aliasable) location is illegal. + +// compile-flags: -C overflow-checks=on + +struct S<'a> { + pointer: &'a mut isize +} + +fn copy_borrowed_ptr<'a>(p: &'a mut S<'a>) -> S<'a> { + S { pointer: &mut *p.pointer } +} + +fn main() { + let mut x = 1; + + { + let mut y = S { pointer: &mut x }; + let z = copy_borrowed_ptr(&mut y); + *y.pointer += 1; + //~^ ERROR cannot use `*y.pointer` because it was mutably borrowed [E0503] + //~| ERROR cannot assign to `*y.pointer` because it is borrowed [E0506] + *z.pointer += 1; + } +} |