unix: acquire-load NEED_ALTSTACK

workingjubilee · joboet · web-flow · commit 529fcbcd6d7c · 2024-07-18T15:24:40.000-07:00
Co-authored-by: Jonas Böttiger &lt;jonasboettiger@icloud.com&gt;
diff --git a/library/std/src/sys/pal/unix/stack_overflow.rs b/library/std/src/sys/pal/unix/stack_overflow.rs
@@ -210,7 +210,7 @@ mod imp {
     /// Mutates the alternate signal stack
     #[forbid(unsafe_op_in_unsafe_fn)]
     pub unsafe fn make_handler(main_thread: bool) -> Handler {
-        if !NEED_ALTSTACK.load(Ordering::Relaxed) {
+        if !NEED_ALTSTACK.load(Ordering::Acquire) {
             return Handler::null();
         }
 

Original file line number	Diff line number	Diff line change
`@@ -210,7 +210,7 @@ mod imp {`
`210`	`210`	`/// Mutates the alternate signal stack`
`211`	`211`	`#[forbid(unsafe_op_in_unsafe_fn)]`
`212`	`212`	`pub unsafe fn make_handler(main_thread: bool) -> Handler {`
`213`		`- if !NEED_ALTSTACK.load(Ordering::Relaxed) {`
	`213`	`+ if !NEED_ALTSTACK.load(Ordering::Acquire) {`
`214`	`214`	`return Handler::null();`
`215`	`215`	`}`
`216`	`216`