1 files changed, 6 insertions, 0 deletions
diff --git a/posix/regex.c b/posix/regex.c
index 0d5b51f013..03bda25f0b 100644
--- a/posix/regex.c
+++ b/posix/regex.c
@@ -41,6 +41,12 @@
 #  define re_compile_fastmap(bufp) __re_compile_fastmap (bufp)
 #endif
 
+#if _LIBC || __GNUC__ >= 3
+# define BE(expr, val) __builtin_expect (expr, val)
+#else
+# define BE(expr, val) (expr)
+#endif
+
 #include "regcomp.c"
 #include "regexec.c"
 #include "regex_internal.c"