[libav-commits] qdm2: avoid integer overflow

Vittorio Giovara git at libav.org
Fri Nov 21 13:47:16 CET 2014


Module: libav
Branch: master
Commit: 1f80742f49a9a4e846c9f099387881abc87150b2

Author:    Vittorio Giovara <vittorio.giovara at gmail.com>
Committer: Vittorio Giovara <vittorio.giovara at gmail.com>
Date:      Wed Nov 12 19:10:44 2014 +0100

qdm2: avoid integer overflow

CC: libav-stable at libav.org
Bug-Id: CID 700555

---

 libavcodec/qdm2.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/qdm2.c b/libavcodec/qdm2.c
index 94bda91..4718b34 100644
--- a/libavcodec/qdm2.c
+++ b/libavcodec/qdm2.c
@@ -730,7 +730,7 @@ static void fill_coding_method_array(sb_int8_array tone_level_idx,
                     for (j = 0; j < 64; j++)
                         acc += tone_level_idx_temp[ch][sb][j];
 
-            multres = 0x66666667 * (acc * 10);
+            multres = 0x66666667LL * (acc * 10);
             esp_40 = (multres >> 32) / 8 + ((multres & 0xffffffff) >> 31);
             for (ch = 0;  ch < nb_channels; ch++)
                 for (sb = 0; sb < 30; sb++)



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