handle null arguments to legacy bsd err.h functions

14 years ago · dc82ee4e30
1 changed files with 2 additions and 2 deletions
--- a/src/linux/err.c
+++ b/src/linux/err.c
@ -5,13 +5,13 @@
 void vwarn(const char *fmt, va_list ap)
 {
-	vfprintf(stderr, fmt, ap);
+	if (fmt) vfprintf(stderr, fmt, ap);
 	perror("");
 }
 void vwarnx(const char *fmt, va_list ap)
 {
-	vfprintf(stderr, fmt, ap);
+	if (fmt) vfprintf(stderr, fmt, ap);
 	putc('\n', stderr);
 }