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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/yield-while-ref-reborrowed.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/yield-while-ref-reborrowed.rs')
-rw-r--r-- | src/test/ui/generator/yield-while-ref-reborrowed.rs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/test/ui/generator/yield-while-ref-reborrowed.rs b/src/test/ui/generator/yield-while-ref-reborrowed.rs new file mode 100644 index 000000000..a03ef945d --- /dev/null +++ b/src/test/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() { } |