From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- .../lint-invalid-atomic-ordering-exchange-weak.rs | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 tests/ui/lint/lint-invalid-atomic-ordering-exchange-weak.rs (limited to 'tests/ui/lint/lint-invalid-atomic-ordering-exchange-weak.rs') diff --git a/tests/ui/lint/lint-invalid-atomic-ordering-exchange-weak.rs b/tests/ui/lint/lint-invalid-atomic-ordering-exchange-weak.rs new file mode 100644 index 000000000..63204c725 --- /dev/null +++ b/tests/ui/lint/lint-invalid-atomic-ordering-exchange-weak.rs @@ -0,0 +1,50 @@ +// only-x86_64 +use std::sync::atomic::{AtomicPtr, Ordering}; + +fn main() { + let ptr = &mut 5; + let ptr2 = &mut 10; + // `compare_exchange_weak` testing + let x = AtomicPtr::new(ptr); + + // Allowed ordering combos + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::Acquire); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::SeqCst); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Acquire, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Acquire, Ordering::Acquire); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Acquire, Ordering::SeqCst); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Release, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Release, Ordering::Acquire); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Release, Ordering::SeqCst); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::AcqRel, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::AcqRel, Ordering::Acquire); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::AcqRel, Ordering::SeqCst); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::SeqCst, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::SeqCst, Ordering::Acquire); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::SeqCst, Ordering::SeqCst); + + // AcqRel is always forbidden as a failure ordering + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Relaxed, Ordering::AcqRel); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Acquire, Ordering::AcqRel); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Release, Ordering::AcqRel); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::AcqRel, Ordering::AcqRel); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::SeqCst, Ordering::AcqRel); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` + + // Release is always forbidden as a failure ordering + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::Release); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Acquire, Ordering::Release); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Release, Ordering::Release); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::AcqRel, Ordering::Release); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::SeqCst, Ordering::Release); + //~^ ERROR `compare_exchange_weak`'s failure ordering may not be `Release` or `AcqRel` +} -- cgit v1.2.3