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-Tag: v2.0.7~13
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c41a914d6e9be91cda40c7e7c05a8b4f2b515089;p=thirdparty%2Fbird.git

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

diff --git a/test/birdtest.c b/test/birdtest.c
index 484205d23..9f7ab5832 100644
--- a/test/birdtest.c
+++ b/test/birdtest.c
@@ -199,7 +199,8 @@ 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())