linux-kernel - Re: [Bug 8501] udivdi3 absence with gcc-4.3.0 on kernels 2.6.20.11 & 2.6.22.-rc1

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Date:	Fri, 18 May 2007 16:15:11 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"bugme-daemon@...nel-bugs.osdl.org" 
	<bugme-daemon@...zilla.kernel.org>, linux-kernel@...r.kernel.org,
	malitzke@...ronets.com
Subject: Re: [Bug 8501] udivdi3  absence with gcc-4.3.0 on kernels 2.6.20.11
 & 2.6.22.-rc1



On Fri, 18 May 2007, Andrew Morton wrote:
> 
> gcc-4.3 appears to have cunningly converted this:

Very cunning indeed.

Considerign that gcc converted straightforward and simple code to a total 
disaster with a 64-bit divide, I'd call it a gcc bug.

> into a divide-by-1000000000 operation, so it emits a call to udivdi3 and we
> don't link.

I think the proper fix is to just tell people that version of gcc is 
broken.

		Linus
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