http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49747
Summary: warning:dereferencing type-punned pointer will break
strict-aliasing rules
Product: gcc
Version: 4.4.5
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: driver
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: douga...@gru.com
After emerging sys-devel/gcc-4.4.5 on Gentoo Linux kernel-2.6.38-gentoo-r6 I am
getting this:
Completed installing gcc-4.4.5 into /var/tmp/portage/sys-devel/gcc-4.4.5/image/
ecompressdir: bzip2 -9 /usr/share/gcc-data/i686-pc-linux-gnu/4.4.5/man
ecompressdir: bzip2 -9 /usr/share/gcc-data/i686-pc-linux-gnu/4.4.5/info
* QA Notice: Package has poor programming practices which may compile
* fine but exhibit random runtime failures.
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:321:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:322:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:677:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:795:
warning: dereferencing type-punned pointer will break strict-aliasing rules
*
/var/tmp/portage/sys-devel/gcc-4.4.5/work/gcc-4.4.5/libgcc/../gcc/unwind-dw2-fde.c:843:
warning: dereferencing type-punned pointer will break strict-aliasing rules
* Please do not file a Gentoo bug and instead report the above QA
* issues directly to the upstream developers of this software.
* Homepage: http://gcc.gnu.org/
I have seen where others have this same problem but have not seen a solution.
Any help with this would be greatly appreciated.
