This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug middle-end/25248] [4.1/4.2 Regression] 2.6.15-rc4 arch/powerpc/mm/hash_utils_64.c miscompiled
- From: "bergner at vnet dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Dec 2005 06:26:27 -0000
- Subject: [Bug middle-end/25248] [4.1/4.2 Regression] 2.6.15-rc4 arch/powerpc/mm/hash_utils_64.c miscompiled
- References: <bug-25248-1216@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from bergner at vnet dot ibm dot com 2005-12-06 06:26 -------
Created an attachment (id=10414)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10414&action=view)
Minimal test case.
Here's a minimal test case. This works with older gcc's and without
optimization on newer gcc's (.
bergner@vervain:~/PR25248> gcc3.3.3 -m64 -O1 hash_utils_64.c
bergner@vervain:~/PR25248> ./a.out
addr = 0x0000000000001000
bergner@vervain:~/PR25248> gcc4.1 -m64 -O0 hash_utils_64.c
bergner@vervain:~/PR25248> ./a.out
addr = 0x0000000000001000
bergner@vervain:~/PR25248> gcc41 -m64 -O1 hash_utils_64.c
bergner@vervain:~/PR25248> ./a.out
addr = 0x4000000000001000
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25248