Where is this segfault code?

My question, now boiling down to a hopefully minimal example, is the reason the following code segfaults.

Of course, this can be seen as a duplicate of the suggested question if you find it. The problem is that I was not able to find the question in my initial search, and so there may be many newbies without knowing the cause of the error. I suggest this as a duplicate that I could find:

Segmentation fault before main

but the description of the problem is very long, so I believe that my collapsed and shorter code might be better to illustrate the problem. This is a duplicate anyway. I suggest that the moderators set this as a duplicate and link from the second possible duplicate to the first.

#include <stdio.h>


/* Parameters */
#define N 3072  
#define LDA N

/* Main program */
int main()  {
        printf( "-----------------------------------------------> Entry main.\n" );
        /* Local arrays */
    double a[LDA*N];
        printf( "-----------------------------------------------> End main.\n" );
return 0;        
}

      

        
        
        
      

    

Segfact does not arise if

#define N 3072

      

        
        
        
      

    

is replaced by

#define N 5

      

        
        
        
      

    

Also no segfault occurs when the line

double a[LDA*N];

      

        
        
        
      

    

omitted.

I am especially confused by the remark that the segfault happens without achieving

printf( "-----------------------------------------------> Entry main.\n" );

      

        
        
        
      

    

which I put directly at the beginning of the main one.

For completeness, I run the code like this:

ludi@ludi-M17xR4:~/Desktop/tests$ g++ -o minicombo.x minicombo.cc && ./minicombo.x