3. Consider the following C code fragment, which makes use of the strcpy version that truncates a copy after n bytes (i.e., strncpy): 1 int 2 main(int argc, char **argv) 3 { 4 return bar(argv[1]); 5 } 6 7 int 8 bar (char *arg) 9 { 10 11 char bar [512]; 12 13 if (sizeof(bar)