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textsearch: fix Boyer-Moore text search bug 

The current logic has a bug which cannot find matching pattern, if the
pattern is matched from the first character of target string.
for example:
	pattern=abc, string=abcdefg
	pattern=a,   string=abcdefg
Searching algorithm should return 0 for those things.

Signed-off-by: Joonwoo Park <joonwpark81@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joonwoo Park 2008-06-30 12:42:23 -07:00 committed by David S. Miller
parent 84ebe1cdae
commit aebb6a849c
1 changed files with 1 additions and 1 deletions
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2
lib/ts_bm.c
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@ -63,7 +63,7 @@ static unsigned int bm_find(struct ts_config *conf, struct ts_state *state)
struct ts_bm *bm = ts_config_priv(conf);
unsigned int i, text_len, consumed = state->offset;
const u8 *text;
int shift = bm->patlen, bs;
int shift = bm->patlen - 1, bs;
for (;;) {
text_len = conf->get_next_block(consumed, &text, conf, state);