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c.f. bug 424647
List Archive: gentoo-amd64
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To: gentoo-amd64@g.o
From: Frank Peters <frank.peters@...>
Subject: Re: Re: GCC-4.5.2 Has Serious Problems
Date: Thu, 30 Jun 2011 21:23:21 -0400
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


Replies:
Re: Re: GCC-4.5.2 Has Serious Problems
-- Mark Knecht
Re: Re: GCC-4.5.2 Has Serious Problems
-- Ian McCulloch
Re: GCC-4.5.2 Has Serious Problems
-- Duncan
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
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Updated Jun 28, 2012

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