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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/generator/dropck.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/generator/dropck.rs')
-rw-r--r-- | tests/ui/generator/dropck.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/generator/dropck.rs b/tests/ui/generator/dropck.rs new file mode 100644 index 000000000..f82111a76 --- /dev/null +++ b/tests/ui/generator/dropck.rs @@ -0,0 +1,20 @@ +#![feature(generators, generator_trait)] + +use std::cell::RefCell; +use std::ops::Generator; +use std::pin::Pin; + +fn main() { + let (mut gen, cell); + cell = Box::new(RefCell::new(0)); + let ref_ = Box::leak(Box::new(Some(cell.borrow_mut()))); + //~^ ERROR `*cell` does not live long enough [E0597] + // the upvar is the non-dropck `&mut Option<Ref<'a, i32>>`. + gen = || { + // but the generator can use it to drop a `Ref<'a, i32>`. + let _d = ref_.take(); //~ ERROR `ref_` does not live long enough + yield; + }; + Pin::new(&mut gen).resume(()); + // drops the RefCell and then the Ref, leading to use-after-free +} |