diff options
| -rw-r--r-- | Tremolo/codebook.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/Tremolo/codebook.c b/Tremolo/codebook.c index 2fbb392..8e7d4eb 100644 --- a/Tremolo/codebook.c +++ b/Tremolo/codebook.c @@ -858,8 +858,11 @@ long vorbis_book_decodevs_add(codebook *book,ogg_int32_t *a, for (j=0;j<step;j++){ if(decode_map(book,b,v,point))return -1; - for(i=0,o=j;i<book->dim;i++,o+=step) - a[o]+=v[i]; + for(i=0,o=j;i<book->dim;i++,o+=step){ + if (__builtin_add_overflow(a[o], v[i], &a[o])){ + a[o] = v[i] > 0 ? INT32_MAX : INT32_MIN; + } + } } } return 0; @@ -926,7 +929,10 @@ long vorbis_book_decodevv_add(codebook *book,ogg_int32_t **a, for(i=offset;i<offset+n;){ if(decode_map(book,b,v,point))return -1; for (j=0;j<book->dim && i < offset + n;j++){ - a[chptr++][i]+=v[j]; + if (__builtin_add_overflow(a[chptr][i], v[j], &a[chptr][i])) { + a[chptr][i] = v[j] > 0 ? INT32_MAX : INT32_MIN; + } + chptr++; if(chptr==ch){ chptr=0; i++; |