From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Fri, 1 Oct 2021 12:21:38 +0000 (+0300)
Subject: lib: str_hash() - Ignore integer wrapping with ubsan
X-Git-Tag: 2.3.18~272
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=088783cdaafd20092925e2d07905a25f7e39b625;p=thirdparty%2Fdovecot%2Fcore.git

lib: str_hash() - Ignore integer wrapping with ubsan

ATTR_NO_SANITIZE_INTEGER was already set for other hash functions, but
forgotten for this one.

Fixes e.g.:
Error: hash.c:529:16: runtime error: unsigned integer overflow: 4294967200 + 115 cannot be represented in type ‘unsigned int’
---

diff --git a/src/lib/hash.c b/src/lib/hash.c
index 16f3c96723..5530de19a1 100644
--- a/src/lib/hash.c
+++ b/src/lib/hash.c
@@ -520,7 +520,8 @@ void hash_table_copy(struct hash_table *dest, struct hash_table *src)
 }
 
 /* a char* hash function from ASU -- from glib */
-unsigned int str_hash(const char *p)
+unsigned int ATTR_NO_SANITIZE_INTEGER
+str_hash(const char *p)
 {
         const unsigned char *s = (const unsigned char *)p;
 	unsigned int g, h = 0;