linux-kernel - Re: [PATCH] scripts/kconfig/menu.c: warning: jump may be used uninitialized in this function

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Message-ID: <alpine.DEB.2.11.1310271859320.31521@trent.utfs.org>
Date:	Sun, 27 Oct 2013 19:02:49 -0700 (PDT)
From:	Christian Kujau <lists@...dbynature.de>
To:	LKML <linux-kernel@...r.kernel.org>
cc:	mmarek@...e.cz, yann.morin.1998@...e.fr, akpm@...ux-foundation.org,
	Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
Subject: Re: [PATCH] scripts/kconfig/menu.c: warning: jump may be used
 uninitialized in this function

On Sun, 27 Oct 2013 at 18:28, Christian Kujau wrote:
> While doing "make oldconfig" on 3.12-rc7 with gcc-4.7.2 (Debian), the 
> following warning is printed:
> 
>   HOSTCC  scripts/kconfig/zconf.tab.o
> In file included from scripts/kconfig/zconf.tab.c:2537:0:
> /usr/local/src/linux-git/scripts/kconfig/menu.c: In function ‘get_symbol_str’:
> /usr/local/src/linux-git/scripts/kconfig/menu.c:586:18: warning: ‘jump’ may be used uninitialized in this function [-Wmaybe-uninitialized]
> /usr/local/src/linux-git/scripts/kconfig/menu.c:547:19: note: ‘jump’ was declared here

Grrr, only after I sent this message I found this was reported in 
September already by Madhavan Srinivasan:  https://lkml.org/lkml/2013/9/19/24

Does anybody know the state of this fix?

Thanks,
Christian.

> The following patch seems to fix that:
> 
>  Signed-off-by: Christian Kujau <lists@...dbynature.de>
> 
> diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
> index c1d5320..23b1827 100644
> --- a/scripts/kconfig/menu.c
> +++ b/scripts/kconfig/menu.c
> @@ -544,7 +544,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
>  {
>  	int i, j;
>  	struct menu *submenu[8], *menu, *location = NULL;
> -	struct jump_key *jump;
> +	struct jump_key *jump = NULL;
>  
>  	str_printf(r, _("Prompt: %s\n"), _(prop->text));
>  	menu = prop->menu->parent;
> 
> 
> Christian.
> -- 
> BOFH excuse #177:
> 
> sticktion
> --
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-- 
BOFH excuse #449:

greenpeace free'd the mallocs
--
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