linux-kernel - Re: [PATCH -mm] Introduce strtol_check

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Date:	Thu, 2 Aug 2007 11:13:15 +0100
From:	"Denis Vlasenko" <vda.linux@...glemail.com>
To:	"Alexey Dobriyan" <adobriyan@...il.com>
Cc:	"Satyam Sharma" <satyam@...radead.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm] Introduce strtol_check_range()

On 8/2/07, Alexey Dobriyan <adobriyan@...il.com> wrote:
> > > Please, copy strtonum() from BSD instead. Nobody needs another
> > > home-grown converter.
> >
> > BSD's strtonum(3) is a detestful, horrible shame.
> >
> > The strtol_check_range() I implemented here does _all_ that strtonum()
> > does, plus is generic w.r.t. base,
>
> What you did with base argument is creating opportunity to fsckup,
> namely, forgetting that base is last and putting it second.

Embedding base in function name (func10, func8, func16 [, func2])
will eliminate that possibility and also save one argument
push on stack.

You can always multiplex them locally:

static int func_generic(base...) {...}

int func10(...) { return func_generic(10, ....); }
int func8(...) { return func_generic(8, ....); }

You also can have a faster "static int func_power_of_2(base...)" for
2,8,16, etc.
--
vda
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