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av_lzo1x_decode: properly handle negative buffer length. 

Treating them like 0 is safest, current code would invoke
undefined pointer arithmetic behaviour in this case.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
This commit is contained in:
Reimar Döffinger 2011-11-05 21:45:31 +01:00
parent 7f6c828f2e
commit b9242fd12f
1 changed files with 3 additions and 3 deletions
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6
libavutil/lzo.c
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@ -175,11 +175,11 @@ int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen) {
int state= 0;
int x;
LZOContext c;
if (!*outlen || !*inlen) {
if (*outlen <= 0 || *inlen <= 0) {
int res = 0;
if (!*outlen)
if (*outlen <= 0)
res |= AV_LZO_OUTPUT_FULL;
if (!*inlen)
if (*inlen <= 0)
res |= AV_LZO_INPUT_DEPLETED;
return res;
}