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fix segfault (bug #1165640)

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Originally committed as revision 4435 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2005-07-11 22:56:23 +00:00
parent 472ea1284e
commit 1a55810e87
1 changed files with 2 additions and 0 deletions
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libavcodec/8bps.c
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@@ -100,11 +100,13 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
dlen = be2me_16(*(unsigned short *)(lp+row*2)); dlen = be2me_16(*(unsigned short *)(lp+row*2));
/* Decode a row of this plane */ /* Decode a row of this plane */
while(dlen > 0) { while(dlen > 0) {
if(dp + 1 >= buf+buf_size) return -1;
if ((count = *dp++) <= 127) { if ((count = *dp++) <= 127) {
count++; count++;
dlen -= count + 1; dlen -= count + 1;
if (pixptr + count * px_inc > pixptr_end) if (pixptr + count * px_inc > pixptr_end)
break; break;
if(dp + count > buf+buf_size) return -1;
while(count--) { while(count--) {
*pixptr = *dp++; *pixptr = *dp++;
pixptr += px_inc; pixptr += px_inc;