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-rw-r--r--mscan.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/mscan.c b/mscan.c
index 7882cb6..225d7a6 100644
--- a/mscan.c
+++ b/mscan.c
@@ -1,3 +1,7 @@
+#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE 700
+#endif
+
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/types.h>