Mark the `spin` variable in atomic.c as G_GNUC_UNUSED.

It would require an `#ifdef` forest to get the conditions
under which it is used right.

diff --git a/mono/utils/atomic.c b/mono/utils/atomic.c
index 7cd884e61d9fb3dd6eaf78dcb34998321fcaef2f..3fdd34d5bf417b0cfacfb3e93e7918eee4988c14 100755 (executable)
--- a/mono/utils/atomic.c
+++ b/mono/utils/atomic.c
@@ -13,11 +13,11 @@
 
 #include <mono/utils/atomic.h>
 
-#if defined (WAPI_NO_ATOMIC_ASM) || defined (BROKEN_64BIT_ATOMICS_INTRINSIC)
+#if defined (WAPI_NO_ATOMIC_ASM) || (defined (BROKEN_64BIT_ATOMICS_INTRINSIC) && !defined (TARGET_OSX))
 
 #include <pthread.h>
 
-static pthread_mutex_t spin = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t spin G_GNUC_UNUSED = PTHREAD_MUTEX_INITIALIZER;
 
 #define NEED_64BIT_CMPXCHG_FALLBACK