Fix a PAL spin lock issue (#19604)

Fix for https://github.com/dotnet/coreclr/issues/18486 - Lock release needs to be at least volatile
dotnet · Aug 22, 2018 · 36f66bf · 36f66bf
1 parent fea6dca
commit 36f66bf
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/pal/src/synchobj/mutex.cpp b/src/pal/src/synchobj/mutex.cpp
@@ -804,7 +804,7 @@ void SPINLOCKAcquire (LONG * lock, unsigned int flags)
 
 void SPINLOCKRelease (LONG * lock)
 {
-    *lock = 0;
+    VolatileStore(lock, 0);
 }
 
 DWORD SPINLOCKTryAcquire (LONG * lock)