[FFmpeg-devel] [PATCH 6/8] add SRT muxer and demuxer

Michael Niedermayer michaelni
Thu Jul 22 14:18:43 CEST 2010


On Wed, Jul 21, 2010 at 11:53:17AM +0200, Aurelien Jacobs wrote:
[...]
> +static int srt_read_packet(AVFormatContext *s, AVPacket *pkt)
> +{
> +    char buffer[2048], *ptr = buffer, *ptr2 = ptr;
> +    int64_t pos = url_ftell(s->pb);
> +    int res = AVERROR_EOF;
> +
> +    while (!is_eol(*ptr2) && !url_feof(s->pb) && ptr-buffer<sizeof(buffer)-1) {

that is_eol looks like its reading from uninited mem


> +        ptr2 = ptr;
> +        ptr += ff_get_line(s->pb, ptr, sizeof(buffer)+buffer-ptr);
> +    }

besides why is ff_get_line() in a loop, i would naively have expected
a single call to work?


[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

If a bugfix only changes things apparently unrelated to the bug with no
further explanation, that is a good sign that the bugfix is wrong.
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