1 #include <stdlib.h> 2 #include <unistd.h> 3 main(void)4 int main(void) 5 { 6 int y = 0; 7 int* x = calloc(1,sizeof(int)); 8 free(x); 9 10 y += x[0]; 11 sleep(1); 12 y += x[0]; 13 14 return y; 15 } 16