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Auto merge of #113287 - RalfJung:miri-test-libstd, r=JohnTitor

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enable test_join test in Miri

Miri for quite a while now has a hack to support self-referential generators: non-`Unique` mutable references are exempt from aliasing conditions. So we can run this test now. (It passes.)

Also extend a comment in a Vec test, while I am at it.
This commit is contained in:
bors 2023-07-05 20:53:38 +00:00
commit d9c13cd453
2 changed files with 1 additions and 1 deletions
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1
library/alloc/tests/vec.rs
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@ -1906,6 +1906,7 @@ fn test_stable_pointers() {
assert_eq!(*v0, 13); assert_eq!(*v0, 13);
// Smoke test that would fire even outside Miri if an actual relocation happened. // Smoke test that would fire even outside Miri if an actual relocation happened.
// Also ensures the pointer is still writeable after all this.
*v0 -= 13; *v0 -= 13;
assert_eq!(v[0], 0); assert_eq!(v[0], 0);
} }

1
library/core/tests/future.rs
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@ -30,7 +30,6 @@ fn poll_n(val: usize, num: usize) -> PollN {
} }
#[test] #[test]
#[cfg_attr(miri, ignore)] // self-referential generators do not work with Miri's aliasing checks
fn test_join() { fn test_join() {
block_on(async move { block_on(async move {
let x = join!(async { 0 }).await; let x = join!(async { 0 }).await;