From 8f5a820d147da36bcdbddd201b35d293699dacd8 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Fri, 2 Nov 2018 12:01:37 -0400
Subject: fix spuriously slow check in twoway strstr/memmem cores

mem0 && mem && ... is redundant since mem can only be nonzero when
mem0 is nonzero.
---
 src/string/memmem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/string/memmem.c')

diff --git a/src/string/memmem.c b/src/string/memmem.c
index 54a66e46..ce3cd190 100644
--- a/src/string/memmem.c
+++ b/src/string/memmem.c
@@ -100,7 +100,7 @@ static char *twoway_memmem(const unsigned char *h, const unsigned char *z, const
 		if (BITOP(byteset, h[l-1], &)) {
 			k = l-shift[h[l-1]];
 			if (k) {
-				if (mem0 && mem && k < p) k = l-p;
+				if (mem && k < p) k = l-p;
 				h += k;
 				mem = 0;
 				continue;
-- 
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