linux-kernel - Re: [PATCH 1/4] Inconsistent extern declarations.

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Message-ID: <20060824211715.GQ19810@stusta.de>
Date:	Thu, 24 Aug 2006 23:17:15 +0200
From:	Adrian Bunk <bunk@...sta.de>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org
Subject: Re: [PATCH 1/4] Inconsistent extern declarations.

On Thu, Aug 24, 2006 at 04:25:18PM +0100, David Woodhouse wrote:

> When you compile multiple files together with --combine, the compiler
> starts to _notice_ when you do things like this in one file:
> 
>  extern int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
>                                 struct iovec *iov, int len, int noblock);
> 
> .. but the actual function looks like this:
> 
>  extern int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
>                                 struct iovec *iov, size_t len, int noblock);
> 
> This fixes a bunch of those, which are mostly just a missing 'const' on
> the extern declaration.
>...

Nice.

This is a subset of -Wmissing-prototypes warnings, and I'm working for 
some time to get the function prototypes into header files to avoid such 
bugs (that can in some cases lead to nasty stack corruptions).

But they should be fixed properly by moving the prototypes to header 
files.

> dwmw2

cu
Adrian

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