| // compile-flags: -O -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>) {} |