From: Jaroslav Kysela <perex@perex.cz>
Date: Mon, 6 Nov 2017 07:30:11 +0000 (+0100)
Subject: libav: try to fix log crash, fixes #4707
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=06a9e74c9176e387f879f576265ff9d421cf0305;p=thirdparty%2Ftvheadend.git

libav: try to fix log crash, fixes #4707
---

diff --git a/src/libav.c b/src/libav.c
index 5a6b0ea18..e8867c49a 100644
--- a/src/libav.c
+++ b/src/libav.c
@@ -17,7 +17,7 @@ libav_log_callback(void *ptr, int level, const char *fmt, va_list vl)
   if (level != AV_LOG_QUIET &&
       ((level <= AV_LOG_INFO) || (tvhlog_options & TVHLOG_OPT_LIBAV))) {
 
-    class_name = ptr ? av_default_item_name(ptr) : "";
+    class_name = ptr && *(void **)ptr ? av_default_item_name(ptr) : "";
 
     l1 = strlen(fmt);
     l2 = strlen(class_name);