diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/lz4opt.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/lz4opt.h b/lib/lz4opt.h index 2daf17e..40592df 100644 --- a/lib/lz4opt.h +++ b/lib/lz4opt.h @@ -328,7 +328,10 @@ static int LZ4HC_compress_optimal ( //nb_matches = LZ4HC_BinTree_GetAllMatches(ctx, curPtr, matchlimit, MINMATCH-1, matches, fullUpdate); nb_matches = LZ4HC_HashChain_GetAllMatches(ctx, curPtr, matchlimit, MINMATCH-1, matches, fullUpdate); //nb_matches = LZ4HC_HashChain_GetAllMatches(ctx, curPtr, matchlimit, last_match_pos - cur + 1, matches, fullUpdate); /* only works if last_match_pos is really the last match pos */ - if ((nb_matches > 0) && (size_t)matches[nb_matches-1].len > sufficient_len) { + if (!nb_matches) continue; + + if ( ((size_t)matches[nb_matches-1].len > sufficient_len) + || (matches[nb_matches-1].len + cur >= LZ4_OPT_NUM) ) { /* immediate encoding */ best_mlen = matches[nb_matches-1].len; best_off = matches[nb_matches-1].off; @@ -357,6 +360,7 @@ static int LZ4HC_compress_optimal ( } if (pos > last_match_pos || price < opt[pos].price) { + assert(pos < LZ4_OPT_NUM); while (last_match_pos < pos) opt[++last_match_pos].price = 1<<30; opt[pos].mlen = ml; opt[pos].off = offset; |