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

---------- 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 
bugzilla.

-Garrett

---------

Forgot to CC the list.

-Garrett