RE: [DEV-C++] BUG: Dev-C 4.9.20 consolprogram has only access to 1MB memory.

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: staale [mailto:st...@le...] 
> Sent: Friday, May 10, 2002 7:55 AM
> To: Ioannis Vranos; Dev-C++ Mailing List
> Subject: Re: [DEV-C++] BUG: Dev-C 4.9.20 consolprogram has 
> only access to 1MB memory.
> 
> 
> Hi Ioannis,
> 
> As I'm not a seasoned C++ programer I welcom your your work 
> on my code, and
> your efforts in this mailing list.:o)
> 
> To be shure I test again and with som simpler code and it 
> still fails on a
> NT4-Sp6 (and w2k) with Dev-C 4.9.20 (Clean new installation 
> of the computer,
> also the OS!!)
> 
> I't works on a NT4-Sp6 with Dev-C 4.0
> 
> See also the 'tread'
>     [Dev-C++] not enough memory - how to configure Win2000
> which is the reaason form my involvement.
> 
> ----------- Code -------------
> #include <stdlib.h>
> 
> int main()
> {
> 
>   // 1MB = 1048576 = 1*1024*1024
>   // 2MB = 2097152 = 2*1024*1024
>  // 31MB = 32505856
>   char narr[2097152];
> 
>   system("PAUSE");
>   return 0;
> }
> ----------- Code End -------------
> 
> Best Regards
> Staale Flock



I assume you mean that your code crashes, not the IDE.There is a limit
of the stack. It has nothing to do with the compiler.


Run this code to see the size of your stack:

#include <iostream>

void stack()
{
  using namespace std;
  
  static unsigned long counter=0;

  char buffer[1024-sizeof(unsigned long)-1];
  
  counter++;

  cout<<"Allocated approximately "<<counter<<" KB of stack before i
die\n";
  
  stack();
}  
  


int main()
{
  stack();
}  


That's why for large arrays & objects we use the free store (new,
delete) or better the standard library containers such as vector.



Ioannis

* Ioannis Vranos
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