tree 5585cd4ff31f51647d4afb7649dee7887d0ceef1
parent 795dc6e46d953d70b4b7ddd3f4956f8f4b9d8565
author Aurelien Jarno <aurelien@aurel32.net> 1434363843 +0200
committer Christian Borntraeger <borntraeger@de.ibm.com> 1434367893 +0200

s390/bios: build with -fdelete-null-pointer-checks

Starting with version 4.9, GCC assumes it can't safely dereference null
pointers, and uses this for some optimizations. On s390, the lowcore
memory is located at address 0, so this assumption is wrong and breaks
the s390-ccw firmware. Pass -fdelete-null-pointer-checks to avoid that.

Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <1434363843-14576-1-git-send-email-aurelien@aurel32.net>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>