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Mail Archives: cygwin/2007/07/28/07:06:58

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Date: Sat, 28 Jul 2007 13:06:33 +0200
From: Reini Urban <rurban AT x-ray DOT at>
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To: cygwin AT cygwin DOT com
Subject: Re: perl5.8.8 SEGfault and corrupt stack
References: <46AA5F93 DOT 4060404 AT tlinx DOT org> <46AB1AFF DOT 40304 AT x-ray DOT at>
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Reini Urban schrieb:
> Linda Walsh schrieb:
>>  I'm having problems with perl5.8.8.  I tried running it under gdb, but
>> it won't load:
>>  > gdb perl.exe
>> GNU gdb 6.3.50_2004-12-28-cvs (cygwin-special)
>> (gdb) g
>> Undefined command: "g".  Try "help".
>> (gdb) run
>> Starting program: /usr/bin/perl.exe
>>
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x610b48b6 in pthread_key_create () from /usr/bin/cygwin1.dll
> 
> Cannot reproduce. Is this a fresh re-install without site_perl or with 
> your broken setup as stated in perl5-porters?

Since this is now a confirmed bug for 5.8.8
http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2007-07/msg01215.html
I'll prepare an update soon. When the fix is available.

> $ gdb perl.exe
> GNU gdb 6.5.50.20060706-cvs (cygwin-special)
> Copyright (C) 2006 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you 
> are welcome to change it and/or distribute copies of it under certain 
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "i686-pc-cygwin"...Minimal symbols from 
> perl.exe... (no debugging symbols found)
> 
> (gdb) run -e'print 1'
> Starting program: /usr/bin/perl.exe -e'print 1'
> Loaded symbols for /cygdrive/c/WINDOWS/system32/ntdll.dll
> Loaded symbols for /cygdrive/c/WINDOWS/system32/kernel32.dll
> Loaded symbols for /bin/cygwin1.dll
> Loaded symbols for /cygdrive/c/WINDOWS/system32/advapi32.dll
> Loaded symbols for /cygdrive/c/WINDOWS/system32/rpcrt4.dll
> Loaded symbols for /bin/cygperl5_8.dll
> Loaded symbols for /bin/cygcrypt-0.dll
> 1
> Program exited normally.
> 
>> I also tried profiling a perl file:
>>
>> law/perl> perl -d:DProf show.pl -s
>>      8 [main] perl 3192 _cygtls::handle_exceptions: Error while 
>> dumping state (
>> probably corrupted stack)
>> Segmentation fault (core dumped)
>>
>> Any ideas on causes...fixes?...
>> Thanks,
>> Linda
> 
> I would try a rebaseall
> 
>> cygcheck output attached -- could NOT include it -- Tbird kept crashing.
>> (1st try composed message, copied in text, tried to address, and I'd
>> typed "c" and it autocompleted cygwin... first of 3 dropdown items.
>> That hung...full cpu usage.  (lost email)
>> (2nd try, recomposed email, *saved*, then tried to address it: another 
>> hang.
>> (3rd try, put in to addr 1st!...then tried to paste text into 
>> window..3rd hang
>> (4th try, try to "re-edit" the saved message -- that hangs (I can 
>> display it in
>> my Drafts folder), soooooo....
>> 5th try: just put in body and attach cygcheck_output.txt as an 
>> attachment.
>> ...(hopefully this works)
-- 
Reini Urban
http://phpwiki.org/  http://murbreak.at/
http://helsinki.at/  http://spacemovie.mur.at/

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