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Date: Fri, 16 Sep 2005 14:28:47 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Bash login breaks if too many environment variables are set
Message-ID: <20050916122847.GM5555@calimero.vinschen.de>
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On Sep 16 13:31, Hommersom, Fred wrote:
> No problem. here is a new trace (similar to the original) and the related stackdump
> 
> Exception: STATUS_ACCESS_VIOLATION at eip=610D6971
> eax=00000000 ebx=10010248 ecx=FFFFF2FF edx=00245300 esi=00000001 edi=00246000
> ebp=0022EE68 esp=0022EE64 program=c:\cygwin\bin\bash.exe, pid 3572, thread main
> cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
> Stack trace:
> Frame     Function  Args
> 0022EE68  610D6971  (00245300, 00000040, 6110E714, 6110E77B)
> 0022EEE8  6105390B  (00000000, 00000000, 0022EF18, 61090062)
> 0022EF18  6106EFC8  (00000000, 00000000, 7C90E64E, 77DDDB0D)
> 0022EFC8  61004D1D  (0022EFE0, 00000000, 0022EFC0, 77D4A303)
> 0022FF88  61005B6F  (00000000, 00000000, 00000000, 00000000)
> End of stack trace
> 
Sure you've used the latest snapshot DLL?  I tried to reproduce this with
the latest snapshot, as well as a self-build DLL from CVS and I can't
reproduce this behaviour.  My test environment consisted of 1400 variables
with a size of 98K, one of the variables taking roughly 31K alone.
However, what's strange in your strace output is this:

>   442     785 [main] bash 3504 environ_init: 0x10010238: X
$
>    37     822 [main] bash 3504 environ_init: 0x10010248: ðH$
>    97     919 [main] bash 3504 handle_exceptions: In cygwin_except_handler exc 0xC0000005 at 0x610D6971 sp 0x22EE64

The first two lines should contain some valid environment entries,
but both of them look broken.  There's no hint why this is, of course.

I observerd that tcsh doesn't like variables with a length of 31K,
though.  ash, bash, zsh and pdksh could handle that long environment
varibale just fine, tcsh on the other hand printed this:

  $ echo $VERY_LONG_ENV_VAR
  Word too long.


Sigh,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat, Inc.

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