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[Bug rtl-optimization/28228] New: Optimize error on x86/x86_64
- From: "tyokota at k2 dot dion dot ne dot jp" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 3 Jul 2006 02:17:24 -0000
- Subject: [Bug rtl-optimization/28228] New: Optimize error on x86/x86_64
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
test.c
-----------------------------
int
main () {
char ba[8] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08};
short a[4] = { 0x04, 0x05, 0x06, 0x07};
int c = *((int *)(&a[1]));
int d = *((int *)(&ba[1]));
printf("%08x\n", c );
printf("%08x\n", d );
return 0;
}
--------------
gcc -O2
a.out
00000040
05040302
--------------
gcc -O
a.out
00060005
05040302
--
Summary: Optimize error on x86/x86_64
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tyokota at k2 dot dion dot ne dot jp
GCC build triplet: x86_64,x86_*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28228