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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/retain-resume-ref.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/retain-resume-ref.rs')
-rw-r--r-- | src/test/ui/generator/retain-resume-ref.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/generator/retain-resume-ref.rs b/src/test/ui/generator/retain-resume-ref.rs new file mode 100644 index 000000000..0606ea71c --- /dev/null +++ b/src/test/ui/generator/retain-resume-ref.rs @@ -0,0 +1,25 @@ +//! This test ensures that a mutable reference cannot be passed as a resume argument twice. + +#![feature(generators, generator_trait)] + +use std::marker::Unpin; +use std::ops::{ + Generator, + GeneratorState::{self, *}, +}; +use std::pin::Pin; + +fn main() { + let mut thing = String::from("hello"); + + let mut gen = |r| { + if false { + yield r; + } + }; + + let mut gen = Pin::new(&mut gen); + gen.as_mut().resume(&mut thing); + gen.as_mut().resume(&mut thing); + //~^ cannot borrow `thing` as mutable more than once at a time +} |