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From:	Rugxulo <rugxulo AT gmail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Abort when compiling using COFF debug format (-gcoff)
Date:	Thu, 26 Jan 2012 21:32:14 -0800 (PST)
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Reply-To:	djgpp AT delorie DOT com

Hi,

On Jan 26, 9:05 pm, DJ Delorie <d DOT  DOT  DOT  AT delorie DOT com> wrote:
>
> > BTW how can I change stack size for DJGPP programs? What is the
> > default value and is it constant for every program?
>
> There is a program called "stubedit" that comes with djgpp that allows
> you to change a few key settings for a given application, including
> the stack size.

Right. You can also (IIRC) set the variable "_stklen" in your own
program, and that will be used by default. Traditionally, I think
"stubify" only gives like 512k to programs. But some programs these
days (e.g. CC1 from GCC 4.6.2) have been set to use a larger default,
e.g. 2048k (aka, 2 MB).

> > What happen If I have less phisical RAM - will it use smaller stack
> > until crash or write an error and don't run at all?
>
> Physical RAM is irrelevent - you get as much stack space as you asked
> for, or the program won't run.  If you don't have enough physical RAM,
> virtual RAM is used instead.

I think? CWS said that the stack was placed directly after the .bss
(uninitialized) memory.

Anyways, not to be too pedantic (as if I know anything!), but physical
RAM isn't the same as DPMI reported. Also, not every DPMI host has
virtual memory support, it's not always enabled (or allowed), and
sometimes it doesn't get detected or work correctly. Yeah, computers
are funny that way. But CWSDPMI really is (IMHO) one of the best,
better than most.

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