Date: Fri, 28 Aug 1998 09:37:33 +0200 (MET DST)
From: Olivier Perron <perron AT art DOT alcatel DOT fr>
To: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
Cc: djgpp AT delorie DOT com
Subject: Re: Computer freeze when using latest version of vim and bash as inferior shell
In-Reply-To: <Pine.GSO.3.96.980827154533.1201E-100000@rtbsci146s>
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On Thu, 27 Aug 1998, Olivier Perron wrote:

> On Thu, 27 Aug 1998, Eli Zaretskii wrote:
> 
> > 
> > On Thu, 27 Aug 1998, Olivier Perron wrote:
> > 
> > > I have sometimes a computer freeze when I use vim version 5.2 with the
> > > DJGPP port of bash as inferior shell in a DOS box under Windows 95.
> > 
> > There's a known problem with DJGPP programs that call the __dpmi_yield 
> > library function in their idle loop.  Some rare installations of Windows 
> > 95 cause DOS box to hang when that function is called after a DJGPP 
> > program has spawned another DJGPP program.
> > 
> > I can mail you a modified source for __dpmi_yield which works around this 
> > bug in Windows, but you'd need to rebuild Bash from sources to fix this 
> > problem.
> > 
> 
> Ok, I've rebuild bash with the modified source for __dpmi_yield, but
> now I can't even do a ls or cat command in bash. If I type ls <RET>,
> nothing happens and I lost control in the dos box.
> 
> Are you sure you gave me the right source for __dpmi_yield ?
> 
Ok, I had time to take a closer look: if I use the stock DJGPP v2.01
libc.a and add your corrected version of __dpmi_yield, I can type ls and
have the output of ls on my screen without loosing control of the dos box.

What did happen ? Well, in fact I was using a patched libc.a which came
from Thomas Demmer ftp site. I downloaded this patched libc.a the 24th oct
1997. I can't say exactly what was corrected in this libc.a, but a (or
more) bug(s) have been introduced which make a buggy version of bash.
Now I have to check if I always have problems when using vim under
bash....

Regards,
Olivier.