_GNU_SOURCE for asprintf on linux

1 files changed, 1 insertions, 0 deletions

diff --git a/number.c b/number.c
index 38f60d7..4c1f9b2 100644
--- a/number.c
+++ b/number.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE //asprintf
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>