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author | Marco Nelissen <marcone@google.com> | 2019-01-23 16:10:48 -0800 |
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committer | Marco Nelissen <marcone@google.com> | 2019-01-24 22:56:40 +0000 |
commit | 6eb63e119294ba92f93f03bbda6c4b203f0f87bb (patch) | |
tree | 8197fb78a3c98ac05fcc62ce1fff924d806ebd73 | |
parent | bc5c9c3a400ffe761f0163c6fb1930f870894952 (diff) | |
download | tremolo-6eb63e119294ba92f93f03bbda6c4b203f0f87bb.tar.gz |
Add some error/overflow checks in codebook handling
Bug: 119120561
Test: manual
Change-Id: I2476ef29d81a8335fdcbdbbaa175a575138d4039
(cherry picked from commit b5e041da6bfe79b5ee5fb48374cd753df6d18015)
-rw-r--r-- | Tremolo/codebook.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/Tremolo/codebook.c b/Tremolo/codebook.c index 467640d..a06302d 100644 --- a/Tremolo/codebook.c +++ b/Tremolo/codebook.c @@ -376,14 +376,21 @@ long _book_maptype1_quantvals(codebook *b){ long acc=1; long acc1=1; int i; - for(i=0;i<b->dim;i++){ - acc*=vals; - acc1*=vals+1; + for (i = 0; i < b->dim; i++) { + if (acc > b->entries / vals) { + break; + } + acc *= vals; + if (acc1 > LONG_MAX / (vals + 1)) { + acc1 = LONG_MAX; + } else { + acc1 *= (vals + 1); + } } - if(acc<=b->entries && acc1>b->entries){ + if (i >= b->dim && acc <= b->entries && acc1 > b->entries) { return(vals); }else{ - if(acc>b->entries){ + if (i < b->dim || acc > b->entries) { vals--; }else{ vals++; |