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c.f. bug 424647
List Archive: gentoo-amd64
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To: gentoo-amd64@g.o
From: Mark Knecht <markknecht@...>
Subject: Re: Re: GCC-4.5.2 Has Serious Problems
Date: Thu, 30 Jun 2011 21:36:38 -0700
On Thu, Jun 30, 2011 at 6:23 PM, Frank Peters <frank.peters@...> wrote:
> On Fri, 1 Jul 2011 00:58:46 +0000 (UTC)
> Duncan <1i5t5.duncan@...> wrote:
>
>>
>> I had wondered if this might be an "undefined behavior" optimization bug,
>>
>
> Well, the amd64 users list may not be the appropriate place to discuss
> C programming, but the problem here stems from attempting to do things
> with C that are not supposed to be done with C.  Such things are aptly
> called "tricks" because they stray away from the convention.
>
> Ideally, I suppose, for these purposes would be to use assembly language
> routines mixed into the C code.  But this is not as easy as with the
> "tricks."
>
> Anyway, I'm glad I presented this issue.  It has definitely improved
> my understanding.  GCC has dozens, if not hundreds, of compile options
> and I know the actual function of only a small few.
>
> Frank Peters
>
>

I think it's completely appropriate for this list. This distro expects
that we put CFLAG options in make.conf so I need to hear about this
stuff even if I don't have to background to completely understand
what's really causing the problem.

- Mark


Replies:
Re: Re: GCC-4.5.2 Has Serious Problems
-- Frank Peters
References:
GCC-4.5.2 Has Serious Problems
-- Frank Peters
Re: GCC-4.5.2 Has Serious Problems
-- Nikos Chantziaras
Re: GCC-4.5.2 Has Serious Problems
-- Nikos Chantziaras
Re: Re: GCC-4.5.2 Has Serious Problems
-- Frank Peters
Re: GCC-4.5.2 Has Serious Problems
-- Nikos Chantziaras
Re: GCC-4.5.2 Has Serious Problems
-- Duncan
Re: Re: GCC-4.5.2 Has Serious Problems
-- Frank Peters
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Updated Jun 28, 2012

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