1 files changed, 1 insertions, 1 deletions
diff --git a/defines.h b/defines.h
index 7b650c3a7c..0e3c547585 100644
--- a/defines.h
+++ b/defines.h
@@ -226,7 +226,7 @@ flush_register_windows(void)
 #  define FLUSH_REGISTER_WINDOWS flush_register_windows()
 #elif defined(__ia64__)
 void flush_register_windows(void)
-#  if ( __GNUC__ == 3 && __GNUC_MINOR__ > 0 ) || __GNUC__ > 3
+#  if defined(__GNUC__) && (( __GNUC__ == 3 && __GNUC_MINOR__ > 0 ) || __GNUC__ > 3)
 __attribute__ ((noinline))
 #  endif
   ;