idf: Improve idf_probe() so it doesnt succeed on 0 byte input

658c5209 · Michael Niedermayer · 3e01c9b5 · 658c5209
Commit 658c5209 authored Oct 16, 2011 by Michael Niedermayer
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bintext.c libavformat/bintext.c +3 -1

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--- a/libavformat/bintext.c
+++ b/libavformat/bintext.c
@@ -261,7 +261,9 @@ static const uint8_t idf_magic[] = {
 static int idf_probe(AVProbeData *p)
 {
-    if (!memcmp(p->buf, idf_magic, FFMIN(sizeof(idf_magic), p->buf_size)))
+    if (p->buf_size < sizeof(idf_magic))
+        return 0;
+    if (!memcmp(p->buf, idf_magic, sizeof(idf_magic)))
        return AVPROBE_SCORE_MAX;
    return 0;
 }