Alex Murray noticed that my djb2 implementation mistakenly initialized
to 0, rather than to 5381. Corrected with this:
>From 54590ca833dba62041af045e7bc7c09b90b54b71 Mon Sep 17 00:00:00 2001
From: Alex Murray <alex.mur...@canonical.com>
Date: Tue, 17 Aug 2021 03:24:37 -0700
Subject: [PATCH] grep: correct DJB2 initialization
* src/grep.c (hash_pattern): DJB2 starts with 5381, not 0.
---
src/grep.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/grep.c b/src/grep.c
index 271b6b9..8fed550 100644
--- a/src/grep.c
+++ b/src/grep.c
@@ -126,7 +126,7 @@ static Hash_table *pattern_table;
static size_t _GL_ATTRIBUTE_PURE
hash_pattern (void const *pat, size_t n_buckets)
{
- size_t h = 0;
+ size_t h = 5381;
intptr_t pat_offset = (intptr_t) pat - 1;
unsigned char const *s = (unsigned char const *) pattern_array + pat_offset;
for ( ; *s != '\n'; s++)
--
