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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/generator/dropck.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/generator/dropck.rs')
-rw-r--r-- | src/test/ui/generator/dropck.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/generator/dropck.rs b/src/test/ui/generator/dropck.rs new file mode 100644 index 000000000..f82111a76 --- /dev/null +++ b/src/test/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 +} |