linux-kernel - Re: [PATCH 2/4] Renames variable to fix shadow warning.

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Date:   Wed, 17 Oct 2018 08:01:51 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Leonardo Brás <leobras.c@...il.com>
Cc:     lkcamp@...ts.libreplanetbr.org,
        Matthew Wilcox <willy6545@...il.com>,
        Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: Re: [PATCH 2/4] Renames variable to fix shadow warning.


* Leonardo Brás <leobras.c@...il.com> wrote:

> Renames the char variable to avoid shadowing a variable previously
> declared on this function.
> 
> Signed-off-by: Leonardo Brás <leobras.c@...il.com>
> ---
>  arch/x86/entry/vdso/vdso2c.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/x86/entry/vdso/vdso2c.h b/arch/x86/entry/vdso/vdso2c.h
> index fa847a620f40..9466998d0f28 100644
> --- a/arch/x86/entry/vdso/vdso2c.h
> +++ b/arch/x86/entry/vdso/vdso2c.h
> @@ -93,11 +93,11 @@ static void BITSFUNC(go)(void *raw_addr, size_t raw_len,
>  		int k;
>  		ELF(Sym) *sym = raw_addr + GET_LE(&symtab_hdr->sh_offset) +
>  			GET_LE(&symtab_hdr->sh_entsize) * i;
> -		const char *name = raw_addr + GET_LE(&strtab_hdr->sh_offset) +
> +		const char *name2 = raw_addr + GET_LE(&strtab_hdr->sh_offset) +
>  			GET_LE(&sym->st_name);
>  
>  		for (k = 0; k < NSYMS; k++) {
> -			if (!strcmp(name, required_syms[k].name)) {
> +			if (!strcmp(name2, required_syms[k].name)) {
>  				if (syms[k]) {
>  					fail("duplicate symbol %s\n",
>  					     required_syms[k].name);

NAK.

Please read and understand the code and rename both variables to 
meaningful names, not just a mindless name/name2 ...

Thanks,

	Ingo