hashtable: silence -fsanitize=address warning for `hashlittle()` function

[lttng-tools.git] / src / common / hashtable / utils.c

diff --git a/src/common/hashtable/utils.c b/src/common/hashtable/utils.c
index c9d75e289a0cf6f4d39a85b3f98378ff717d6141..2c41e6c65f4060f31439640cec8c8c6d62b724c1 100644 (file)
--- a/src/common/hashtable/utils.c
+++ b/src/common/hashtable/utils.c
@@ -1,20 +1,10 @@
 /*
- * Copyright (C) - Bob Jenkins, May 2006
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2006 Bob Jenkins
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 /*
@@ -274,7 +264,9 @@ static void __attribute__((unused)) hashword2(const uint32_t *k, size_t length,
  * Use for hash table lookup, or anything where one collision in 2^^32 is
  * acceptable.  Do NOT use for cryptographic purposes.
  */
-static uint32_t __attribute__((unused)) hashlittle(const void *key,
+LTTNG_NO_SANITIZE_ADDRESS
+__attribute__((unused))
+static uint32_t hashlittle(const void *key,
                size_t length, uint32_t initval)
 {
        uint32_t a,b,c;
@@ -469,6 +461,7 @@ unsigned long hash_key_u64(const void *_key, unsigned long seed)
 #if (CAA_BITS_PER_LONG == 64)
 /*
  * Hash function for number value.
+ * Pass the value itself as the key, not its address.
  */
 LTTNG_HIDDEN
 unsigned long hash_key_ulong(const void *_key, unsigned long seed)
@@ -479,6 +472,7 @@ unsigned long hash_key_ulong(const void *_key, unsigned long seed)
 #else
 /*
  * Hash function for number value.
+ * Pass the value itself as the key, not its address.
  */
 LTTNG_HIDDEN
 unsigned long hash_key_ulong(const void *_key, unsigned long seed)