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Date: Sun, 12 Oct 2003 15:06:14 -0400
From: Christopher Faylor <cgf-rcm AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: std::ofstream causes segfault in 1.5.x
Message-ID: <20031012190614.GA4514@redhat.com>
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References: <1041647656 DOT 20031012170712 AT huno DOT net> <BAY2-DAV7ecSjDEwHme000014f7 AT hotmail DOT com> <3015794265 DOT 20031012210258 AT huno DOT net>
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On Sun, Oct 12, 2003 at 09:02:58PM +0200, thomas wrote:
>>> >>    28 7293919 [main] cdrdao 1576 mmap64: addr 0, len 1065811968, prot 3, flags 22, fd -1, off 0
>>>>Can you tell me why the process tries to mmap 1065811968 bytes ==
>>>>~1Gig?  That won't work, nor would it under 1.3.22 on the same machine.
>>>>The cause for this is outside of the strace and very likely outside of
>>>>mmap itself.
>
>>>Hmmm that is certainly most interesting.  It's just opening a simple
>>>file to write ~10 lines to it.  The exact same source code compiled in
>>>a 1.3.18 environment works perfectly.
>
>>The 1.3.22 environment wouldn't be using a different gcc version by any
>>chance?
>
>Actually no, they are both "gcc version 2.95.3-10 (cygwin special)".
>However that gave me the idea to build the same source with "gcc
>version 3.3.1 (cygming special)" on 1.5.5 now, and it works flawlessly!
>No sight of mmap64 in the strace output either.

Well, that was adequate motivation to get me to finally remove the gcc2
package.

Looks like the standard answer of using http://cygwin.com/problems.html
was the right one in this case.  I apologize to Corinna for dragging her
into this.

cgf

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