linux-kernel - [intel-tdx:guest-filter 10/28] arch/x86/coco/core.c:35:23: error: a function declaration without a prototype is deprecated in all versions of C

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Date:   Wed, 17 Aug 2022 10:49:43 +0800
From:   kernel test robot <lkp@...el.com>
To:     Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: [intel-tdx:guest-filter 10/28] arch/x86/coco/core.c:35:23: error: a
 function declaration without a prototype is deprecated in all versions of C

tree:   https://github.com/intel/tdx.git guest-filter
head:   c8ae661a124d107ccb71713b70010f1bf237b7a2
commit: c664f263080aef1f09d2021e00428e648bc1c73f [10/28] x86/tdx: Add command line option to disable TDX guest filter support
config: x86_64-randconfig-r012-20220815 (https://download.01.org/0day-ci/archive/20220817/202208171051.GtZFxUcq-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project aed5e3bea138ce581d682158eb61c27b3cfdd6ec)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel/tdx/commit/c664f263080aef1f09d2021e00428e648bc1c73f
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest-filter
        git checkout c664f263080aef1f09d2021e00428e648bc1c73f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross 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@...el.com>

All errors (new ones prefixed by >>):

>> arch/x86/coco/core.c:35:23: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
   bool cc_filter_enabled()
                         ^
                          void
   1 error generated.


vim +35 arch/x86/coco/core.c

    34	
  > 35	bool cc_filter_enabled()
    36	{
    37		return cc_filter_status;
    38	}
    39	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp