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libc: update strstr implementation to match musl

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musl commits:
122d67f846cb0be2c9e1c3880db9eb9545bbe38c
0239cd0681e889a269fb7691f60e81ef8d081e6b
8f5a820d147da36bcdbddd201b35d293699dacd8

Submitted by:	David CARLIER <devnexen_gmail.com>
Obtained from:	musl
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D19834
This commit is contained in:
Ed Maste 2019-04-09 15:52:18 +00:00
parent 9bcd7482b2
commit 22ccf855bf
1 changed files with 1 additions and 2 deletions
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3
lib/libc/string/strstr.c
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@ -143,9 +143,8 @@ static char *twoway_strstr(const unsigned char *h, const unsigned char *n)
/* Check last byte first; advance by shift on mismatch */
if (BITOP(byteset, h[l-1], &)) {
k = l-shift[h[l-1]];
//printf("adv by %zu (on %c) at [%s] (%zu;l=%zu)\n", k, h[l-1], h, shift[h[l-1]], l);
if (k) {
if (mem0 && mem && k < p) k = l-p;
if (k < mem) k = mem;
h += k;
mem = 0;
continue;