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Subject: RE: fork on win95
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Date: Fri, 20 Jul 2001 09:40:01 +1000
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Thread-Topic: fork on win95
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From: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To: "cygdev" <cygwin-developers AT cygwin DOT com>
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> -----Original Message-----
> From: Corinna Vinschen [mailto:vinschen AT redhat DOT com]
> Sent: Friday, July 20, 2001 9:30 AM
> To: cygwin-developers AT cygwin DOT com
> Subject: Re: fork on win95
> 
> 
> On Thu, Jul 19, 2001 at 11:31:00AM -0400, Christopher Faylor wrote:
> > On Thu, Jul 19, 2001 at 01:12:10PM +0200, Corinna Vinschen wrote:
> > >values (stdin, stdout and stderr, probably). Then the 
> normal `ps' output
> > >appears. Generally, the above ERROR_INVALID_HANDLE output appears,
> > >then everything works fine. That's also valid for the 
> aforementioned
> > >ssh session. As usual nothing happens when started under 
> strace control.
> > 
> > And, as usual, this would call for some debugging with gdb.
> 
> Hmmpf, just had a first try. I tried a `gdb -nw /bin/sh' and then
> a `r -c ps'. It crashes reproducable in check_valid_pointer() called
> from pthread_mutex_lock() stuff called from read_etc_passwd().
> Before reaching main(), of course.
> 
> I need some sleep now,
> Corinna
> 

Sleep(); Right now thats done :]. The IsBad*Ptr functions, when a
debugger is attached, generate a signal if the pointer is bad. And the
pointer is bad for most pthread_*_create|init calls unless the memory
region is initialised to '\0'. 

Just 'cont' from that first exception.

Rob