From: Willy Tarreau <w@1wt.eu>
Date: Fri, 16 May 2025 14:19:04 +0000 (+0200)
Subject: IMPORT: slz: silence a build warning on non-x86 non-arm
X-Git-Tag: v3.2-dev17~31
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ccc65012d35908f36d9516420203f3a2fd808052;p=thirdparty%2Fhaproxy.git

IMPORT: slz: silence a build warning on non-x86 non-arm

Building with clang 16 on MIPS64 yields this warning:

  src/slz.c:931:24: warning: unused function 'crc32_uint32' [-Wunused-function]
  static inline uint32_t crc32_uint32(uint32_t data)
                         ^

Let's guard it using UNALIGNED_LE_OK which is the only case where it's
used. This saves us from introducing a possibly non-portable attribute.

This is libslz upstream commit f5727531dba8906842cb91a75c1ffa85685a6421.
---

diff --git a/src/slz.c b/src/slz.c
index c104a7326..002b345f8 100644
--- a/src/slz.c
+++ b/src/slz.c
@@ -937,6 +937,7 @@ static inline uint32_t crc32_char(uint32_t crc, uint8_t x)
 	return crc;
 }
 
+#ifdef UNALIGNED_LE_OK
 static inline uint32_t crc32_uint32(uint32_t data)
 {
 #if defined(__ARM_FEATURE_CRC32)
@@ -956,6 +957,7 @@ static inline uint32_t crc32_uint32(uint32_t data)
 #endif
 	return data;
 }
+#endif
 
 /* Modified version originally from RFC1952, working with non-inverting CRCs */
 uint32_t slz_crc32_by1(uint32_t crc, const unsigned char *buf, int len)