diff options
Diffstat (limited to 'c/enc/hash_longest_match64_inc.h')
| -rw-r--r-- | c/enc/hash_longest_match64_inc.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/c/enc/hash_longest_match64_inc.h b/c/enc/hash_longest_match64_inc.h index 8f825de..9834c2a 100644 --- a/c/enc/hash_longest_match64_inc.h +++ b/c/enc/hash_longest_match64_inc.h @@ -165,6 +165,7 @@ static BROTLI_INLINE void FN(FindLongestMatch)( uint16_t* BROTLI_RESTRICT num = self->num_; uint32_t* BROTLI_RESTRICT buckets = self->buckets_; const size_t cur_ix_masked = cur_ix & ring_buffer_mask; + BROTLI_DCHECK(cur_ix_masked + max_length <= ring_buffer_mask) /* Don't accept a short copy from far away. */ score_t min_score = out->score; score_t best_score = out->score; @@ -184,8 +185,7 @@ static BROTLI_INLINE void FN(FindLongestMatch)( } prev_ix &= ring_buffer_mask; - if (cur_ix_masked + best_len > ring_buffer_mask || - prev_ix + best_len > ring_buffer_mask || + if (prev_ix + best_len > ring_buffer_mask || data[cur_ix_masked + best_len] != data[prev_ix + best_len]) { continue; } @@ -233,8 +233,7 @@ static BROTLI_INLINE void FN(FindLongestMatch)( break; } prev_ix &= ring_buffer_mask; - if (cur_ix_masked + best_len > ring_buffer_mask || - prev_ix + best_len > ring_buffer_mask || + if (prev_ix + best_len > ring_buffer_mask || /* compare 4 bytes ending at best_len + 1 */ BrotliUnalignedRead32(&data[cur_ix_masked + best_len - 3]) != BrotliUnalignedRead32(&data[prev_ix + best_len - 3])) { |