From: Bo Yang <boyang@suse.com>
Date: Wed, 20 Mar 2013 08:34:17 +0000 (+0800)
Subject: [build] Avoid strict-aliasing warning for gcc 4.3
X-Git-Tag: v1.20.1~1552
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11ad0bafbf137a874f88ac810520acb90fa9a990;p=thirdparty%2Fipxe.git

[build] Avoid strict-aliasing warning for gcc 4.3

Signed-off-by: Bo Yang <boyang@suse.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
---

diff --git a/src/arch/i386/include/bits/byteswap.h b/src/arch/i386/include/bits/byteswap.h
index f3d30a254..0d9cb967c 100644
--- a/src/arch/i386/include/bits/byteswap.h
+++ b/src/arch/i386/include/bits/byteswap.h
@@ -53,8 +53,8 @@ __bswap_variable_64 ( uint64_t x ) {
 static inline __attribute__ (( always_inline )) void
 __bswap_64s ( uint64_t *x ) {
 	struct {
-		uint32_t low;
-		uint32_t high;
+		uint32_t __attribute__ (( may_alias )) low;
+		uint32_t __attribute__ (( may_alias )) high;
 	} __attribute__ (( may_alias )) *dwords = ( ( void * ) x );
 	uint32_t discard;