From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/nll/issue-31567.rs | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 tests/ui/nll/issue-31567.rs (limited to 'tests/ui/nll/issue-31567.rs') diff --git a/tests/ui/nll/issue-31567.rs b/tests/ui/nll/issue-31567.rs new file mode 100644 index 000000000..623954e6d --- /dev/null +++ b/tests/ui/nll/issue-31567.rs @@ -0,0 +1,25 @@ +// Regression test for #31567: cached results of projections were +// causing region relations not to be enforced at all the places where +// they have to be enforced. + +struct VecWrapper<'a>(&'a mut S); + +struct S(Box); + +fn get_dangling<'a>(v: VecWrapper<'a>) -> &'a u32 { + let s_inner: &'a S = &*v.0; //~ ERROR borrow may still be in use when destructor runs [E0713] + &s_inner.0 +} + +impl<'a> Drop for VecWrapper<'a> { + fn drop(&mut self) { + *self.0 = S(Box::new(0)); + } +} + +fn main() { + let mut s = S(Box::new(11)); + let vw = VecWrapper(&mut s); + let dangling = get_dangling(vw); + println!("{}", dangling); +} -- cgit v1.2.3