linux-kernel - Re: arch/powerpc/math-emu/math_efp.c:927:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int

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Date:   Wed, 31 Aug 2022 08:22:29 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Arnd Bergmann <arnd@...db.de>, llvm@...ts.linux.dev,
        kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Alex Shi <alexs@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Miguel Ojeda <ojeda@...nel.org>
Subject: Re: arch/powerpc/math-emu/math_efp.c:927:1: error: type specifier
 missing, defaults to 'int'; ISO C99 and later do not support implicit int

On Wed, Aug 31, 2022 at 07:10:39AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   dcf8e5633e2e69ad60b730ab5905608b756a032f
> commit: e8c07082a810fbb9db303a2b66b66b8d7e588b53 Kbuild: move to -std=gnu11
> date:   6 months ago
> config: powerpc-tqm8560_defconfig (https://download.01.org/0day-ci/archive/20220831/202208310702.3iydJVg0-lkp@intel.com/config)
> compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c7df82e4693c19e3fd2e25c83eb04d9deb7b7b59)
> 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
>         # install powerpc cross compiling tool for clang build
>         # apt-get install binutils-powerpc-linux-gnu
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8c07082a810fbb9db303a2b66b66b8d7e588b53
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout e8c07082a810fbb9db303a2b66b66b8d7e588b53
>         # 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=powerpc SHELL=/bin/bash arch/powerpc/math-emu/
> 
> 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/powerpc/math-emu/math_efp.c:927:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
>    module_init(spe_mathemu_init);
>    ^
>    int
>    arch/powerpc/math-emu/math_efp.c:927:13: error: a parameter list without types is only allowed in a function definition
>    module_init(spe_mathemu_init);
>                ^
>    2 errors generated.

Thanks for the report, I've sent a fix:

https://lore.kernel.org/20220831152014.3501664-1-nathan@kernel.org/

Cheers,
Nathan