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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/issues/issue-45697.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.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.rs')
-rw-r--r-- | tests/ui/issues/issue-45697.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-45697.rs b/tests/ui/issues/issue-45697.rs new file mode 100644 index 000000000..db6d1d8fa --- /dev/null +++ b/tests/ui/issues/issue-45697.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=off + +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; + } +} |