4 line prog which gives core dump.

Where is the program?

-ssnkumar

that is my question.
i want the program which gives core dump.

#include <string.h>
int main ()
{
      char * p = NULL;
      strcpy (p, "core dump\n");
}

You can make up tons of them ...

int main ()
{
      char * p = NULL;
      p[7]=' ';
}
...
....

2 more programs to dump core.
1st one is with arithmetic exception.
2nd one is with segmentation fault.

/* Program 1 */
#include <stdio.h>

int main(int argc, char **argv)
{
        int i = 1/0;
}
/* Program 1 Ends */

/* Program 2 */

#include <stdio.h>

main()
{
    int *i = NULL;

    *i = 0;
}
/* Program 2 Ends */

-ssnkumar

Hello rajesh,

int *p;
main()
{
     printf("%d",*p);
}

try the above example,

Hi r_a_j_e_s_h,
To get the full picture of all actions which lead to a core dump, just check the system's default behaviour (man signal / man -s 5 signal). Those marked as core are by default creating a core dump when raised. Not all POSIX signals are created by all platforms (Linux x86 doesn't throw SIGBUS, for example).

Once you know which signals lead to a core dump, it's quite easy to create one. You can simply raise a fake signal:

#include <signal.h>

int main(){
    raise(SIGSEGV);
    return 0;
}


Cheers!

Stefan