https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63567
Bug ID: 63567
Summary: Linux kernel build error due to non-static
initializers
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: sasha.levin at oracle dot com
Hi all,
I'm seeing a new build issue with the linux kernel:
CC kernel/smpboot.o
In file included from include/linux/mutex.h:15:0,
from include/linux/kernfs.h:13,
from include/linux/sysfs.h:15,
from include/linux/kobject.h:21,
from include/linux/device.h:17,
from include/linux/node.h:17,
from include/linux/cpu.h:16,
from kernel/smpboot.c:4:
include/linux/spinlock_types.h:82:2: error: initializer element is not constant
(spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname)
^
include/linux/mutex.h:112:18: note: in expansion of macro
‘__SPIN_LOCK_UNLOCKED’
, .wait_lock = __SPIN_LOCK_UNLOCKED(lockname.wait_lock) \
^
include/linux/mutex.h:118:27: note: in expansion of macro ‘__MUTEX_INITIALIZER’
struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
^
kernel/smpboot.c:80:8: note: in expansion of macro ‘DEFINE_MUTEX’
static DEFINE_MUTEX(smpboot_threads_lock);
^
include/linux/spinlock_types.h:82:2: note: (near initialization for
‘smpboot_threads_lock.wait_lock’)
(spinlock_t ) __SPIN_LOCK_INITIALIZER(lockname)
^
include/linux/mutex.h:112:18: note: in expansion of macro
‘__SPIN_LOCK_UNLOCKED’
, .wait_lock = __SPIN_LOCK_UNLOCKED(lockname.wait_lock) \
^
include/linux/mutex.h:118:27: note: in expansion of macro ‘__MUTEX_INITIALIZER’
struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
^
kernel/smpboot.c:80:8: note: in expansion of macro ‘DEFINE_MUTEX’
static DEFINE_MUTEX(smpboot_threads_lock);
^
make[1]: *** [kernel/smpboot.o] Error 1
make: *** [kernel/smpboot.o] Error 2
This was bisected down to:
commit b2601928b5bf34a817b5a9a2a371c476018e634d
Author: mpolacek <mpolacek@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Oct 15 10:08:00 2014 +0000
* doc/invoke.texi: Update to reflect that GNU11 is the default
mode for C.
* c-common.h (c_language_kind): Update comment.
c-family/
* c-opts.c (c_common_init_options): Make -std=gnu11 the default for C.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@216247
138bc75d-0d04-0410-961f-82ee72b054a4
