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lavf: don't segfault when a NULL filename is passed to avformat_open_input()

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This can easily happen when the caller is using a custom AVIOContext.

Behave as if the filename was an empty string in this case.

CC: libav-stable@libav.org
(cherry picked from commit a5db8e4a1a)

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Anton Khirnov 2012-06-15 19:58:11 +02:00
parent da0c457663
commit 7124fa5d36
1 changed files with 1 additions and 1 deletions
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2
libavformat/utils.c
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@ -634,7 +634,7 @@ int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputForma
}
s->duration = s->start_time = AV_NOPTS_VALUE;
av_strlcpy(s->filename, filename, sizeof(s->filename));
av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
/* allocate private data */
if (s->iformat->priv_data_size > 0) {