linux-kernel - Re: linux-4.1-rc7/drivers/irqchip/irq-renesas-intc-irqpin.c:418: array index used before limits check ?

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Date:	Mon, 8 Jun 2015 15:10:50 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	David Binderman <dcb314@...mail.com>
cc:	"jason@...edaemon.net" <jason@...edaemon.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: linux-4.1-rc7/drivers/irqchip/irq-renesas-intc-irqpin.c:418:
 array index used before limits check ?

On Mon, 8 Jun 2015, David Binderman wrote:

> Hello there,
> 
> [linux-4.1-rc7/drivers/irqchip/irq-renesas-intc-irqpin.c:418]: (style) Array ind
> ex 'k' is used before limits check.
> 
>    if (!io[k] && k < INTC_IRQPIN_REG_NR_MANDATORY) {
> 
> Suggest sanity check array index before use.

Which version of gcc is being stupid here?

Thanks,

	tglx