[U-Boot] [PATCH] dlmalloc: remove manual reloc alias warning

[Andreas Bießmann]

From: Andreas Bießmann <biessmann at corscience.de>

The avr32 architecture (and some others) require manual relocation. Due to the
previous error all avr32 boards gave warnings in MAKEALL wich makes it hard to
find new warnings.

This patch fixes following warning:
---8<---
dlmalloc.c: In function 'malloc_bin_reloc':
dlmalloc.c:1493: warning: dereferencing pointer 'p' does break strict-aliasing rules
dlmalloc.c:1493: warning: dereferencing pointer 'p' does break strict-aliasing rules
dlmalloc.c:1490: note: initialized from here
dlmalloc.c:1493: note: initialized from here
--->8---

Signed-off-by: Andreas Bießmann <biessmann at corscience.de>
---
A question to all the other related arches, namely m68k, mips, nds32 and
sparc: Do you encounter the same warnings or is this warning due to my
outdated compiler (4.4.3 currently, unfortunately atmel do not bother to send
their patches mainline)?

 common/dlmalloc.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/common/dlmalloc.c b/common/dlmalloc.c
index c645d73..78b1885 100644
--- a/common/dlmalloc.c
+++ b/common/dlmalloc.c
@@ -1485,9 +1485,10 @@ static mbinptr av_[NAV * 2 + 2] = {
 };
 
 #ifdef CONFIG_NEEDS_MANUAL_RELOC
+typedef unsigned long __attribute__((__may_alias__)) ulong_aliased;
 void malloc_bin_reloc (void)
 {
-	unsigned long *p = (unsigned long *)(&av_[2]);
+	ulong_aliased *p = (ulong_aliased *)(&av_[2]);
 	int i;
 	for (i=2; i<(sizeof(av_)/sizeof(mbinptr)); ++i) {
 		*p++ += gd->reloc_off;
-- 
1.7.10.4