41 struct retval {  struct
42 	struct retval *retval;  argument
47 static struct retval *retval;  variable
112 	struct retval *rv;  in main()
138 				rv = malloc(sizeof(struct retval));  in main()
142 				rv->retval = retval;  in main()
143 				retval = rv;  in main()
158 		while (retval != NULL) {  in main()
159 			rv = retval->retval;  in main()
160 			printf(" %s=%s", retval->param, retval->value);  in main()
161 			free(retval->value);  in main()
162 			free(retval);  in main()
163 			retval = rv;  in main()