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base64: fix signed overflow in shift 

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2012-11-24 13:03:53 +00:00
parent 7709ce029a
commit dd3b73f390
1 changed files with 2 additions and 2 deletions
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4
libavutil/base64.c
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@ -44,10 +44,10 @@ static const uint8_t map2[] =
int av_base64_decode(uint8_t *out, const char *in, int out_size)
{
int i, v;
int i;
unsigned v = 0;
uint8_t *dst = out;
v = 0;
for (i = 0; in[i] && in[i] != '='; i++) {
unsigned int index= in[i]-43;
if (index>=FF_ARRAY_ELEMS(map2) || map2[index] == 0xff)