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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-resume.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-resume.rs')
-rw-r--r-- | tests/ui/generator/dropck-resume.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tests/ui/generator/dropck-resume.rs b/tests/ui/generator/dropck-resume.rs new file mode 100644 index 000000000..4c18077f3 --- /dev/null +++ b/tests/ui/generator/dropck-resume.rs @@ -0,0 +1,33 @@ +#![feature(generators, generator_trait)] + +use std::ops::{Generator, GeneratorState}; +use std::pin::Pin; + +struct SetToNone<'a: 'b, 'b>(&'b mut Option<&'a i32>); + +impl<'a, 'b> Drop for SetToNone<'a, 'b> { + fn drop(&mut self) { + *self.0 = None; + } +} + +fn drop_using_generator() -> i32 { + let mut y = Some(&0); + let z = &mut y; + let r; + { + let mut g = move |r| { + let _s = SetToNone(r); + yield; + }; + let mut g = Pin::new(&mut g); + g.as_mut().resume(z); + r = y.as_ref().unwrap(); + //~^ ERROR cannot borrow `y` as immutable because it is also borrowed as mutable + } + **r +} + +fn main() { + println!("{}", drop_using_generator()); +} |