add an sscanf regression test

[libc-test] / src / math / lgamma.c

diff --git a/src/math/lgamma.c b/src/math/lgamma.c
index a838bc8..b20a693 100644 (file)
--- a/src/math/lgamma.c
+++ b/src/math/lgamma.c
@@ -1,3 +1,4 @@
+#define _XOPEN_SOURCE 700
 #include <stdint.h>
 #include <stdio.h>
 #include "mtest.h"