[vfs-idmapping:fs.posix_acl.vfsuid 15/37] include/linux/stddef.h:8:16: error: expected identifier or '(' before 'void'

From: kernel test robot
Date: Fri Sep 09 2022 - 16:55:16 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping.git fs.posix_acl.vfsuid
head: d37e11d9b40fc35810217121aa3205b7975fd4c6
commit: c45bf675834bb2d099f0a8375cadeb30f4d915e5 [15/37] 9p: add ->get_dentry_acl() method
config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20220910/202209100459.46yB9DOr-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping.git/commit/?id=c45bf675834bb2d099f0a8375cadeb30f4d915e5
git remote add vfs-idmapping https://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping.git
git fetch --no-tags vfs-idmapping fs.posix_acl.vfsuid
git checkout c45bf675834bb2d099f0a8375cadeb30f4d915e5
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

In file included from include/uapi/linux/posix_types.h:5,
from include/uapi/linux/types.h:14,
from include/linux/types.h:6,
from include/linux/limits.h:6,
from include/linux/kernel.h:16,
from fs/9p/vfs_super.c:8:
>> include/linux/stddef.h:8:16: error: expected identifier or '(' before 'void'
8 | #define NULL ((void *)0)
| ^~~~
fs/9p/acl.h:23:33: note: in expansion of macro 'NULL'
23 | #define v9fs_iop_get_dentry_acl NULL
| ^~~~
fs/9p/acl.h:29:1: note: in expansion of macro 'v9fs_iop_get_dentry_acl'
29 | v9fs_iop_get_dentry_acl(struct user_namespace *mnt_userns,
| ^~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/stddef.h:8:23: error: expected ')' before numeric constant
8 | #define NULL ((void *)0)
| ^
fs/9p/acl.h:23:33: note: in expansion of macro 'NULL'
23 | #define v9fs_iop_get_dentry_acl NULL
| ^~~~
fs/9p/acl.h:29:1: note: in expansion of macro 'v9fs_iop_get_dentry_acl'
29 | v9fs_iop_get_dentry_acl(struct user_namespace *mnt_userns,
| ^~~~~~~~~~~~~~~~~~~~~~~


vim +8 include/linux/stddef.h

^1da177e4c3f41 Linus Torvalds 2005-04-16 6
^1da177e4c3f41 Linus Torvalds 2005-04-16 7 #undef NULL
^1da177e4c3f41 Linus Torvalds 2005-04-16 @8 #define NULL ((void *)0)
6e218287432472 Richard Knutsson 2006-09-30 9

:::::: The code at line 8 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>

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