linux-kernel - [linux-stable-rc:linux-5.10.y 7936/7987] include/linux/types.h:30:33: error: two or more data types in declaration specifiers

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Date:   Sun, 21 Aug 2022 07:41:15 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Jason A. Donenfeld" <zx2c4@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [linux-stable-rc:linux-5.10.y 7936/7987]
 include/linux/types.h:30:33: error: two or more data types in declaration
 specifiers

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y
head:   879ffc7efcbe48e91264fd3bd3ec52cbcf69114c
commit: 56660dd43bbfcd7b0a6872f3ceb0c924fe2f5af9 [7936/7987] um: seed rng using host OS rng
config: um-kunit_defconfig (https://download.01.org/0day-ci/archive/20220821/202208210710.fFNAH58i-lkp@intel.com/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/stable/linux-stable-rc.git/commit/?id=56660dd43bbfcd7b0a6872f3ceb0c924fe2f5af9
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc linux-5.10.y
        git checkout 56660dd43bbfcd7b0a6872f3ceb0c924fe2f5af9
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs]
   In file included from arch/um/include/shared/irq_user.h:10,
                    from arch/um/include/shared/os.h:12,
                    from arch/um/kernel/umid.c:9:
>> include/linux/stddef.h:11:9: error: expected identifier before numeric constant
      11 |         false   = 0,
         |         ^~~~~
>> include/linux/types.h:30:33: error: two or more data types in declaration specifiers
      30 | typedef _Bool                   bool;
         |                                 ^~~~
   In file included from arch/um/include/shared/os.h:17,
                    from arch/um/kernel/umid.c:9:
   include/linux/types.h:30:1: warning: useless type name in empty declaration
      30 | typedef _Bool                   bool;
         | ^~~~~~~


vim +30 include/linux/types.h

^1da177e4c3f415 Linus Torvalds   2005-04-16  29  
6e2182874324727 Richard Knutsson 2006-09-30 @30  typedef _Bool			bool;
6e2182874324727 Richard Knutsson 2006-09-30  31  

:::::: The code at line 30 was first introduced by commit
:::::: 6e21828743247270d09a86756a0c11702500dbfb [PATCH] Generic boolean

:::::: TO: Richard Knutsson <ricknu-0@...dent.ltu.se>
:::::: CC: Linus Torvalds <torvalds@...osdl.org>

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