Commit e5ece183 authored by Baptiste Coudurier's avatar Baptiste Coudurier

return error if len is negative, prevent segfault

Originally committed as revision 13419 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 278f987a
......@@ -89,6 +89,8 @@ static int ffm_read_data(AVFormatContext *s,
while (size > 0) {
redo:
len = ffm->packet_end - ffm->packet_ptr;
if (len < 0)
return -1;
if (len > size)
len = size;
if (len == 0) {
......
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