Bug#758115: Disabled wait state X'32EE' on IPL of zIPL
On Mon, Aug 25, 2014 at 10:52:47AM +0200, Michael Holzheu wrote:
> On Sun, 24 Aug 2014 20:43:30 +0200
> Bastian Blank <waldi@debian.org> wrote:
> > And -fno-delete-null-pointer-checks seems to be the correct option.
> From the gcc man page:
> -fdelete-null-pointer-checks
> In some environments, this assumption is not true, and programs can safely dereference null
> pointers. Use -fno-delete-null-pointer-checks to disable this optimization for programs which
> depend on that behavior.
> So we should add this Option to CFLAGS in zipl/boot/Makefile?
Yes.
> Why we have not seen this problem under RHEL and SLES up to now?
Can you show a RHEL or SLES that uses gcc 4.9? Or any
Redhat/Fedora/SUSE with support for s390* that uses it? RHEL 7 uses 4.8
(see https://git.centos.org/summary/?r=rpms/gcc.git).
Maybe you should ask the gcc people why they enable this check on the
freestanding implementation (-ffreestanding).
Bastian
--
Without freedom of choice there is no creativity.
-- Kirk, "The return of the Archons", stardate 3157.4
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