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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/yield-while-ref-reborrowed.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/yield-while-ref-reborrowed.rs')
-rw-r--r-- | tests/ui/generator/yield-while-ref-reborrowed.rs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tests/ui/generator/yield-while-ref-reborrowed.rs b/tests/ui/generator/yield-while-ref-reborrowed.rs new file mode 100644 index 000000000..a03ef945d --- /dev/null +++ b/tests/ui/generator/yield-while-ref-reborrowed.rs @@ -0,0 +1,40 @@ +#![feature(generators, generator_trait)] + +use std::ops::{GeneratorState, Generator}; +use std::cell::Cell; +use std::pin::Pin; + +fn reborrow_shared_ref(x: &i32) { + // This is OK -- we have a borrow live over the yield, but it's of + // data that outlives the generator. + let mut b = move || { + let a = &*x; + yield(); + println!("{}", a); + }; + Pin::new(&mut b).resume(()); +} + +fn reborrow_mutable_ref(x: &mut i32) { + // This is OK -- we have a borrow live over the yield, but it's of + // data that outlives the generator. + let mut b = move || { + let a = &mut *x; + yield(); + println!("{}", a); + }; + Pin::new(&mut b).resume(()); +} + +fn reborrow_mutable_ref_2(x: &mut i32) { + // ...but not OK to go on using `x`. + let mut b = || { + let a = &mut *x; + yield(); + println!("{}", a); + }; + println!("{}", x); //~ ERROR + Pin::new(&mut b).resume(()); +} + +fn main() { } |