avformat/matroskaenc: Fix potential overflow

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
3 years ago · ca16863549
parent 625ea2d2a9
commit ca16863549
1 changed files with 1 additions and 1 deletions
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@ -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)
 {
    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)
        bytes++;