sbase

commit e40fc2b17676145087f62e66940d8aceccb793b5
parent 3b1b50cffa67f8411e54aa5d1d57a20975a656be
Author: FRIGN <dev@frign.de>
Date:   Mon, 21 Dec 2015 13:57:10 +0100

Check argv0 in xvprintf()

You never know, given printf'ing NULL-strings might crash the
program, we shouldn't just pass argv0 blindly to it.

Diffstat:
M
libutil/eprintf.c
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libutil/eprintf.c b/libutil/eprintf.c
@@ -47,7 +47,7 @@ weprintf(const char *fmt, ...)
 void
 xvprintf(const char *fmt, va_list ap)
 {
-	if (strncmp(fmt, "usage", strlen("usage")))
+	if (argv0 && strncmp(fmt, "usage", strlen("usage")))
 		fprintf(stderr, "%s: ", argv0);
 
 	vfprintf(stderr, fmt, ap);