Fix compilation with GCC 2, which had no __builtin_expect

rosslagerwall · May 20, 2011 · 09d39a1 · 09d39a1
1 parent 5786b91
commit 09d39a1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/util-internal.h b/util-internal.h
@@ -179,7 +179,7 @@ long _evutil_weakrand(void);
 
 /* Evaluates to the same boolean value as 'p', and hints to the compiler that
  * we expect this value to be false. */
-#ifdef __GNUC__
+#if defined(__GNUC__) && __GNUC__ >= 3         /* gcc 3.0 or later */
 #define EVUTIL_UNLIKELY(p) __builtin_expect(!!(p),0)
 #else
 #define EVUTIL_UNLIKELY(p) (p)