linux-kernel - Re: [PATCH] math-emu/setcc: avoid gcc extension

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Message-Id: <33e707f92df6b89a1c22f337f230cf32@kernel.crashing.org>
Date:	Sun, 7 Jan 2007 14:27:32 +0100
From:	Segher Boessenkool <segher@...nel.crashing.org>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	akpm <akpm@...l.org>, lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] math-emu/setcc: avoid gcc extension

> setcc() in math-emu is written as a gcc extension statement expression
> macro that returns a value.  However, it's not used that way and it's
> not needed like that, so just make it a do-while non-extension macro
> so that we don't use an extension when it's not needed.

Looks fine, except

> -#define setcc(cc) ({ \
> +#define setcc(cc) do { \
>    partial_status &= ~(SW_C0|SW_C1|SW_C2|SW_C3); \
> -  partial_status |= (cc) & (SW_C0|SW_C1|SW_C2|SW_C3); })
> +  partial_status |= (cc) & (SW_C0|SW_C1|SW_C2|SW_C3); } \
> +	while (0)

closing brace on the "while" line, please.


Segher

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