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Message-ID: <44E87F85.2040409@iki.fi>
Date: Sun, 20 Aug 2006 18:28:05 +0300
From: Andris Pavenis <andris DOT pavenis AT iki DOT fi>
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To: djgpp AT delorie DOT com
Subject: Re: That BASH crash, revisited
References: <OF61A52282 DOT CB39175D-ON872571C4 DOT 006931B1-872571C4 DOT 0070EA32 AT seagate DOT com> <44e21a48$0$489$cc7c7865 AT news DOT luth DOT se> <86p3bbv6ppj DOT fsf AT sirppi DOT helsinki DOT fi>
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Reply-To: djgpp AT delorie DOT com

Esa A E Peuha kirjoitti:
> Martin Str|mberg <ams AT speedy DOT ludd DOT ltu DOT se> writes:
> 
>> Doing that, it reveals to me that it seems to be some kind of
>> corruption that happens somewhere in excute_cmd.c:
>> execute_simple_command() or in what is called from there. A watchpoint
>> tells me that it's changed in nofork.c: nofork_save_all_environment()
>> and nofork_restore_all_environment(). But that does not seem to be the
>> place of corruption.
> 
> It _is_ the place of corruption.  The function command_substitute() does
> setjmp(return_catch) before it executes the command, but it doesn't
> restore the old value of return_catch afterwards, so any longjmp to
> return_catch goes back inside command_substitute() even after it has
> returned.  This is no problem on other platforms, becuse the function
> will just exit, but on DJGPP it calls nofork_restore_all_environment()
> again, which pretty much destroys the environment.
> 
Have somebody tried to get bash-3.0 (or better 3.1 working for DJGPP). 
Long time ago I tried with bash-3.0, but results was not satisfactory 
and I didn't have enough time for debugging.

Andris