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Message-ID:	<001501c1143c$2eaff000$0a02a8c0@acceleron>
From:	"Andrew Cottrell" <acottrel AT ihug DOT com DOT au>
To:	"Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Cc:	<djgpp-workers AT delorie DOT com>
References:	<Pine DOT SUN DOT 3 DOT 91 DOT 1010723163744 DOT 19800A-100000 AT is>
Subject:	Re: Make 3.791 on Windows 2000 test
Date:	Tue, 24 Jul 2001 22:28:43 +1000
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Reply-To:	djgpp-workers AT delorie DOT com

> On Mon, 23 Jul 2001, Andrew Cottrell wrote:
>
> > > > >         make.exe[1]: Entering directory `d:/dj204/gnu/make-3.791'
> > > > >         Extended Error 183
> > > Any luck in finding out where did this message come from?
This message comes from the following, which is spawned from line job.c
approx line 1200 (+/- 30 lines due to debugging ) from the spawnvpe line
1) Reproducable Windows 2000 command line prompt:
    DJGPP_204 D:\dj204\gnu\make-3.791>command.com /c if not exist glob\nul
md glob
    Extended Error 183
2) Debugged code output:
    job.c 1199
    argv[0] = command.com
    argv[1] = /c
    argv[2] = if
    argv[3] = not
    argv[4] = exist
    argv[5] = glob\nul
    argv[6] = md
    argv[7] = glob

Tests on Win2000 box:
1) If I run the following in the command prompt there is no error
    if not exist glob\nul md glob
2) If I run the following in the command prompt there the output informs me
the echo is on
    command.com /C if not exist glob\nul echo
3) If there is no glob directory the following command runs okay the first
time it is run, but the second time and until the glob directory is deleted
the error occurs.
     command.com /C if not exist glob\nul md glob

Conclusion for Extended Error 183:
Windows 2000 command.com is not able to perform the test for a directory as
per DOS and Winodows 9x via a check for directory\nul.

> > > > I have download YAMD to see if this can find anything tomorrow
night.
> > >
> > > YAMD will not help you on Windows, because it relies on support for
> > > function 0507h of Int 31h, which is part of DPMI 1.0 and unsupported
by
> > > Windows (this is the same function our startup code uses to uncommit
the
> > > null page and catch NUL pointer dereferences).
> >
> > On the Win 98 box I re-started in DOS mode , not a DOS BOX and I got the
> > same traceback for the leak info from YAMD in DOS as I did on NT.
>
> Do I understand correctly that, when you used Make built with YAMD in DOS
> mode, you saw the same crash inside malloc as the crash you reported on
> Windows 2000?  If so, it's probably better to debug this in plain DOS
> mode.
My fault I as was not clear enough. I do not get the crash, but I did get
the same YAMD memory messages.

I modified make's main.c and added the following line, but the crash still
occured and I couldn't see any extra debug info or extra info in the crash
outout.
int _crt0_startup_flags =  (_CRT0_FLAG_UNIX_SBRK);

Any other suggestions on where to look or what to do next?

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