bt_matchfinder: make callers do max_len check

[wimlib] / include / wimlib / bt_matchfinder.h

diff --git a/include/wimlib/bt_matchfinder.h b/include/wimlib/bt_matchfinder.h
index c2fa8b8297b1a94deaed2a6aef1e9679587aaadb..1a94497845cd0a4d34380c8d7f69ba812f7e08a2 100644 (file)
--- a/include/wimlib/bt_matchfinder.h
+++ b/include/wimlib/bt_matchfinder.h
@@ -147,11 +147,6 @@ TEMPLATED(bt_matchfinder_advance_one_byte)(struct TEMPLATED(bt_matchfinder) * co
        u32 len;
        u32 best_len = 2;
 
-       if (unlikely(max_len < LOAD_U24_REQUIRED_NBYTES + 1)) {
-               *best_len_ret = best_len;
-               return lz_matchptr;
-       }
-
        hash3 = *next_hash;
        *next_hash = lz_hash(load_u24_unaligned(in_next + 1), BT_MATCHFINDER_HASH3_ORDER);
        prefetchw(&mf->hash3_tab[*next_hash]);
@@ -246,7 +241,7 @@ TEMPLATED(bt_matchfinder_advance_one_byte)(struct TEMPLATED(bt_matchfinder) * co
  *     The current position in the input buffer (the position of the sequence
  *     being matched against).
  * @max_len
- *     The maximum permissible match length at this position.
+ *     The maximum permissible match length at this position.  Must be >= 5.
  * @nice_len
  *     Stop searching if a match of at least this length is found.
  *     Must be <= @max_len.
@@ -305,7 +300,7 @@ TEMPLATED(bt_matchfinder_get_matches)(struct TEMPLATED(bt_matchfinder) *mf,
  * @cur_pos
  *     The current position in the input buffer.
  * @max_len
- *     The maximum permissible match length at this position.
+ *     The maximum permissible match length at this position.  Must be >= 5.
  * @nice_len
  *     Stop searching if a match of at least this length is found.
  * @max_search_depth