From: Peter Danielsson <e96pd AT efd DOT lth DOT se>
Newsgroups: comp.os.msdos.djgpp
Subject: Help! Why is my program crashing?
Date: Tue, 16 Jun 1998 16:17:39 +0200
Organization: student
Lines: 23
Message-ID: <35867E83.E01@efd.lth.se>
Reply-To: e96pd AT efd DOT lth DOT se
NNTP-Posting-Host: cie96ojo.student.lth.se
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

Why does my program crash all the time. It's a simple program, only a
few lines:

int WIDTH=513;
int *mapheight;

void initmapheight(int *n)//allocateing memory
{
 n=(int*)calloc((long)513*513,sizeof(int));
 if(n==NULL)
	 exit(-1);
}
void reset(int *m,int W2)//set to zero. Here it crashes
{
 for(int a5=0;a5<W2;a5++)
	 for(int q=0;q<W2;q++)
		m[(long)a5*W2+q]=0;	 
}
void main(int argc, char *argv[])
{
initmapheight(mapheight);
reset(mapheight,100);
}