linux-kernel - Re: [PATCH] MIPS: Transform old-style macros to newer "_

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Message-ID: <4657589F.7050509@zytor.com>
Date:	Fri, 25 May 2007 14:43:59 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Robert P. J. Day" <rpjday@...dspring.com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ralf Baechle <ralf@...ux-mips.org>
Subject: Re: [PATCH] MIPS: Transform old-style macros to newer "__noreturn"
 standard.

Robert P. J. Day wrote:
>> ... and declare functions as:
>>
>> __noreturn f();
>>
>> ... which is the syntactially sane way of doing it.
> 
> that may be, but keep in mind that gcc allows attributes to *follow*
> the parameter list as well, and some people might prefer to do the
> following:
> 
>   f() __noreturn;
> 
> that would fail badly if you defined __noreturn as you suggest.

That's equally moronic that saying that "some people might prefer to
write 'f() void;'", which is what it's *EXACTLY* equivalent to.  Yes,
they might "prefer" it, but it's syntactically invalid and the compiler
won't accept it.  As it shouldn't.

__noreturn here takes the syntactic place of the return type, because
that's what it IS.

	-hpa
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