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-rw-r--r--libavformat/rtsp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index 91128e1309..14ac510828 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -2196,7 +2196,7 @@ static int sdp_probe(AVProbeData *p1)
/* we look for a line beginning "c=IN IP" */
while (p < p_end && *p != '\0') {
- if (p + sizeof("c=IN IP") - 1 < p_end &&
+ if (sizeof("c=IN IP") - 1 < p_end - p &&
av_strstart(p, "c=IN IP", NULL))
return AVPROBE_SCORE_EXTENSION;