File: noalias-rwlockreadguard.rs

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rustc 1.87.0%2Bdfsg1-1
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//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes -Z mutable-noalias=yes

#![crate_type = "lib"]

use std::sync::{RwLock, RwLockReadGuard};

// Make sure that `RwLockReadGuard` does not get a `noalias` attribute, because
// 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: &RwLock<i32>) {}