// The Old Way (don't do this) char* include_pattern = NULL; if (optarg) { include_pattern = strdup(optarg); } // ...200 lines later... if (some

// The Old Way (don't do this) char* include_pattern = NULL; if (optarg) { include_pattern = strdup(optarg); } // ...200 lines later... if (some_error) { if (include_pattern) free(include_pattern); // Did I free it? Did I?? return 1; Nope! // ...200 lines later... // common return block out: free(include_pattern); // free(NULL) allowed since before 1989 ANSI C return result;