[Bug testsuite/88332] [9 regression] gcc.dg/Wattributes-10.c fails starting with r265728

["seurer at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88332

--- Comment #7 from seurer at gcc dot gnu.org ---
The original machine I saw the failure on was a power8 BE machine running RHEL
7.6 but gcc110 is:

seurer@gcc1-power7:~$ lscpu
Architecture:          ppc64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Big Endian
CPU(s):                64
On-line CPU(s) list:   0-63
Thread(s) per core:    4
Core(s) per socket:    1
Socket(s):             16
NUMA node(s):          2
Model:                 2.1 (pvr 003f 0201)
Model name:            POWER7 (architected), altivec supported
Hypervisor vendor:     (null)
Virtualization type:   full
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              4096K
NUMA node0 CPU(s):     0-31
NUMA node1 CPU(s):     32-63

seurer@gcc1-power7:~$ cat /etc/*release
CentOS Linux release 7.4.1708 (AltArch) 
NAME="CentOS Linux"
VERSION="7 (AltArch)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (AltArch)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/";
BUG_REPORT_URL="https://bugs.centos.org/";
SIG_FAMILY="AltArch ppc64"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

CentOS Linux release 7.4.1708 (AltArch) 
CentOS Linux release 7.4.1708 (AltArch)