Re: [Dev-C++] How to increase space for defining arrays

[Per W. <pw...@ia...>]

No, there is no "memory is memory" rule.

I take it that you were trying to allocate huge amounts of data on the
stack. But the stack is not intended for allocation of large memory
blocks. Most operating systems requires a fixed memory region to be
reserved for the stack. The OS may then allocate more or less memory into
this fixed-size region but when the region is full it can't be grown.

The information on the net wasn't "noise". If you do a wild-card search
without knowing what you are looking for, you must realize that the
majority of hits may not be relevant for you - such as how to adjust
memory settings in FreeBSD.

If you do narrow your searches more, you will get hits closer to your
goal. But the best hits would probably recommend you to use dynamic
memory instead of changing the size of the memory region reserved for
stack data.

/pwm

On Sun, 25 Oct 2009, John Mcelvaney wrote:

>
> Thanks all.  I figure memory is memory, but I'll try allocating the
> space with malloc.
>  From some of the noise I've read on the web, I thought there was
> some adjustment
> that could be made to some configuration item, that would allow
> larger size arrays to
> be declared with minGW.
>
>
> At 06:33 PM 10/24/2009, mi...@na... wrote:
> >Two megs? Or  "char somvar[2,000,000]"?
> >
> >If the latter...then that is way more than you'll probably need. That's a
> >very large array. Now, if you can only allocate two mB, then something is
> >wrong with the compiler, OS or with your code. Try allocating it with malloc
> >instead of using a standard array.
> >
> >-mh.
> >
> >(sorry for sending to the wrong place the first time, Mr Westermark)
> >----- Original Message ----- From: "Per Westermark" <pw...@ia...>
> >To: "John Mcelvaney" <joh...@co...>
> >Cc: <dev...@li...>
> >Sent: Saturday, October 24, 2009 6:05 PM
> >Subject: Re: [Dev-C++] How to increase space for defining arrays
> >
> >
> >>Are you having problems in FreeBSD? Is there even a kern.maxdsize for
> >>MinGW?
> >>
> >>Are you talking about global arrays, or local on the stack, or dynamically
> >>allocated? Uninitialized or initialized arrays?
> >>
> >>/pwm
> >>
> >>On Sat, 24 Oct 2009, John Mcelvaney wrote:
> >>
> >>>
> >>>I've searched all day, but I can't find any help for increasing the
> >>>size for declaring arrays.  I can use a little over 2 meg.  I saw
> >>>one suggestion about increasing the minGW "kern.maxdsize",
> >>>but I can find no info on the web about how to do that. Anybody
> >>>have any suggestions?  p.s. I'm using Dev C++ version 4.9.9.2
> >>>and minGW32 version 3.2.4.  Thanks.
> >>>
> >>>
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