| 9291b747 |
1 | --- gzip-1.3.5/deflate.c 2003-04-03 21:51:36.000000000 +1000 |
| 2 | +++ gzip-1.3.5-aj/deflate.c 2003-04-03 21:56:38.000000000 +1000 |
| 3 | @@ -643,7 +643,8 @@ |
| 4 | /* Find the longest match, discarding those <= prev_length. |
| 5 | * At this point we have always match_length < MIN_MATCH |
| 6 | */ |
| 7 | - if (hash_head != NIL && strstart - hash_head <= MAX_DIST) { |
| 8 | + if (hash_head != NIL && strstart - hash_head <= MAX_DIST && |
| 9 | + strstart <= window_size - MIN_LOOKAHEAD) { |
| 10 | /* To simplify the code, we prevent matches with the string |
| 11 | * of window index 0 (in particular we have to avoid a match |
| 12 | * of the string with itself at the start of the input file). |
| 13 | @@ -737,7 +738,8 @@ |
| 14 | match_length = MIN_MATCH-1; |
| 15 | |
| 16 | if (hash_head != NIL && prev_length < max_lazy_match && |
| 17 | - strstart - hash_head <= MAX_DIST) { |
| 18 | + strstart - hash_head <= MAX_DIST && |
| 19 | + strstart <= window_size - MIN_LOOKAHEAD) { |
| 20 | /* To simplify the code, we prevent matches with the string |
| 21 | * of window index 0 (in particular we have to avoid a match |
| 22 | * of the string with itself at the start of the input file). |
| 23 | |
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