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Prevent infinite loop in the ANM decoder.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 39993860e1)
This commit is contained in:
Laurent Aimar
2011-10-01 00:44:58 +02:00
committed by Michael Niedermayer
parent 67b704982f
commit 1f2a93cf4b
1 changed files with 2 additions and 0 deletions
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2
libavcodec/anm.c
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@@ -79,6 +79,8 @@ static inline int op(uint8_t **dst, const uint8_t *dst_end,
int striplen = FFMIN(count, remaining); int striplen = FFMIN(count, remaining);
if (buf) { if (buf) {
striplen = FFMIN(striplen, buf_end - *buf); striplen = FFMIN(striplen, buf_end - *buf);
if (*buf >= buf_end)
goto exhausted;
memcpy(*dst, *buf, striplen); memcpy(*dst, *buf, striplen);
*buf += striplen; *buf += striplen;
} else if (pixel >= 0) } else if (pixel >= 0)