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UnsafeCell -> RwLock

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This commit is contained in:
Robin Raymond 2022-06-20 04:44:25 +00:00
parent 43c6f9c691
commit 048a80140b
1 changed files with 3 additions and 4 deletions
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7
src/test/codegen/noalias-rwlockreadguard.rs
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@ -2,14 +2,13 @@
#![crate_type = "lib"]
use std::cell::UnsafeCell;
use std::sync::RwLockReadGuard;
use std::sync::{RwLock, RwLockReadGuard};
// Make sure that `RwLockReadGuard` does not get a `noalias` attribute, because
// the `UnsafeCell` might alias writes after it is dropped.
// the `RwLock` might alias writes after it is dropped.
// CHECK-LABEL: @maybe_aliased(
// CHECK-NOT: noalias
// CHECK-SAME: %_data
#[no_mangle]
pub unsafe fn maybe_aliased(_: RwLockReadGuard<'_, i32>, _data: &UnsafeCell<i32>) {}
pub unsafe fn maybe_aliased(_: RwLockReadGuard<'_, i32>, _data: &RwLock<i32>) {}