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// 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>) {}
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