$cat efence-p1.c #include <stdio.h> #include <stdlib.h> int main() { char *ptr = (char *) malloc(1024); ptr[0] = 0; ptr[1024] = 0; exit(0); } $gcc -g efence-p1.c -lefence $./a.out Electric Fence 2.2 Copyright (C) 1987-1999 Bruce Perens <bruce@perens.com> Segmentation fault $