diff options
Diffstat (limited to 'c/enc/hash_forgetful_chain_inc.h')
| -rw-r--r-- | c/enc/hash_forgetful_chain_inc.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/c/enc/hash_forgetful_chain_inc.h b/c/enc/hash_forgetful_chain_inc.h index 9a8efeb..17f31fa 100644 --- a/c/enc/hash_forgetful_chain_inc.h +++ b/c/enc/hash_forgetful_chain_inc.h @@ -203,6 +203,7 @@ static BROTLI_INLINE void FN(FindLongestMatch)( uint8_t* BROTLI_RESTRICT tiny_hashes = FN(TinyHash)(self->extra[0]); FN(Bank)* BROTLI_RESTRICT banks = FN(Banks)(self->extra[1]); 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; @@ -260,8 +261,7 @@ static BROTLI_INLINE void FN(FindLongestMatch)( prev_ix = (cur_ix - backward) & ring_buffer_mask; slot = banks[bank].slots[last].next; delta = banks[bank].slots[last].delta; - 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])) { |