From: Maria Matejka <mq@ucw.cz>
Date: Mon, 30 Sep 2019 11:53:24 +0000 (+0200)
Subject: Testing: Don't call vsnprintf with NULL format
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7af13730ba9f0cd353cb304ce1ce54384356ab3;p=thirdparty%2Fbird.git

Testing: Don't call vsnprintf with NULL format
---

diff --git a/test/birdtest.c b/test/birdtest.c
index ede4eb527..ccd944a3c 100644
--- a/test/birdtest.c
+++ b/test/birdtest.c
@@ -202,7 +202,8 @@ bt_log_result(int result, const char *fmt, va_list argptr)
 	   (fmt && strlen(fmt) > 0) ? ": " : "");
   pos = msg_buf + strlen(msg_buf);
 
-  vsnprintf(pos, sizeof(msg_buf) - (pos - msg_buf), fmt, argptr);
+  if (fmt)
+    vsnprintf(pos, sizeof(msg_buf) - (pos - msg_buf), fmt, argptr);
 
   int chrs = 0;
   for (uint i = 0; i < strlen(msg_buf); i += get_num_terminal_cols())