[AMD64] X.org build eats all the memory when compiled with GCC 4.2 (fwd)

youshi10 at u.washington.edu youshi10 at u.washington.edu
Mon Jun 18 17:04:33 UTC 2007

---------- Forwarded message ----------
Date: Mon, 18 Jun 2007 08:33:00 -0700
From: Garrett Cooper <youshi10 at u.washington.edu>
To: Daniel Eischen <deischen at freebsd.org>
Subject: Re: [AMD64] X.org build eats all the memory when compiled with GCC 4.2

Daniel Eischen wrote:
> On Mon, 18 Jun 2007, Michiel Boland wrote:
>> On Sat, 16 Jun 2007, Garrett Cooper wrote:
>>> Claus Guttesen wrote:
>>>>> I recompiled X.org yesterday and hit the following problem
>>>>> (1 week old -current, yesterdays packages, AMD64) -- when compiling
>>>>> files in
>>>>> /usr/ports/x11-servers/xorg-server/work/xorg-server-1.2.0/hw/xfree86/scanpci 
>>>>> directory, there are huge .h files - about 4mb. when compiler uses 
>>>>> -O2
>>>>> or -O option it eats all available memory and then gets killed by 
>>>>> the
>>>>> system.
>>>>> Without -O/O2 option compile works just as expected.
>>>>> Now -- should I file a PR or it's known bug?
>>>> No, but you  should read the archives. Requires more than 1 GB of 
>>>> swap.
>>> It's a known bug that isn't going to be fixed until gcc 4.2.1.
>>> -Garrett
>> Well, until then, is it not possible to at least put the following patch 
>> in ports/x11-servers/xorg-server/files:
> [ ... ]
>> That would make a lot of people very happy. In particular those running 
>> amd64.
> Yes, it happens on i386 too.  I think requiring more than 1GB of swap
> is ridiculous.  Please patch gcc or the port.
Patching gcc would be the better idea, but if there's a bug with the current 
patch that was ported from 4.3.0 to 4.2.0 and will be in 4.2.1, that will break 
lots of compilations..

I would search for gcc 4.2 quadratic -- it's a fairly long thread on GNU's 



Forgot to CC the list.


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