xlc: Silence extension-used compiler warning.

Signed-off-by: Austen Lauria <[email protected]>

Author: awlauria

opal/include/opal/sys/arm64/atomic_llsc.h

@@ -25,6 +25,11 @@
 
 #if !defined(OPAL_SYS_ARCH_ATOMIC_LLSC_H)
 
+#if defined(__xlC__) || defined(__IBMC__) || defined(__IBMCPP__) || defined(__ibmxl__)
+/* Silence -Wlanguage-extension-token */
+#define typeof __typeof__
+#endif
+
 #define OPAL_SYS_ARCH_ATOMIC_LLSC_H
 
 #if OPAL_C_GCC_INLINE_ASSEMBLY

opal/include/opal/sys/powerpc/atomic.h

@@ -111,6 +111,9 @@ void opal_atomic_isync(void)
 /* work-around bizzare xlc bug in which it sign-extends
    a pointer to a 32-bit signed integer */
 #define OPAL_ASM_ADDR(a) ((uintptr_t)a)
+
+/* Silence -Wlanguage-extension-token */
+#define typeof __typeof__
 #else
 #define OPAL_ASM_ADDR(a) (a)
 #endif