using C function in fortran code

From: Ki (docskky_at_yahoo.com)
Date: 08/19/04 

Date: 19 Aug 2004 09:00:00 -0700

Hello,
I am trying to write a program which fortran calls C routines.
Such as,
C language
        void my_malloc_(void **p, int *size) {
                *p=(void *)malloc(*size);
        }

fortran language
        call my_malloc(p, length)

        
However, I keep getting Segmentation fault.
I use Sun.
Could anyone help me out?

Thank you
   - ki