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avformat/matroskaenc: Fix potential overflow

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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Andreas Rheinhardt
2022-01-16 10:18:34 +01:00
parent 625ea2d2a9
commit ca16863549
1 changed files with 1 additions and 1 deletions
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libavformat/matroskaenc.c
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@@ -286,7 +286,7 @@ static void put_ebml_uint(AVIOContext *pb, uint32_t elementid, uint64_t val)
static void put_ebml_sint(AVIOContext *pb, uint32_t elementid, int64_t val) static void put_ebml_sint(AVIOContext *pb, uint32_t elementid, int64_t val)
{ {
int i, bytes = 1; int i, bytes = 1;
uint64_t tmp = 2*(val < 0 ? val^-1 : val); uint64_t tmp = 2 * (uint64_t)(val < 0 ? val^-1 : val);
while (tmp >>= 8) while (tmp >>= 8)
bytes++; bytes++;