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-rw-r--r--libc/stdio/vfprintf.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/libc/stdio/vfprintf.c b/libc/stdio/vfprintf.c
index 7794c6e39..a32960f2e 100644
--- a/libc/stdio/vfprintf.c
+++ b/libc/stdio/vfprintf.c
@@ -89,7 +89,6 @@
*/
#define _ISOC99_SOURCE /* for ULLONG primarily... */
-#define _GNU_SOURCE
#include <features.h>
#include "_stdio.h"
#include <stdlib.h>