Checking patch argp/argp-help.c...
error: while searching for:
  size_t canonical_length;
  static const char *default_context = "command-line option\004";
  *allocated = NULL;
  option_msgid = malloc (strlen (default_context) + strlen (option_name) + 1);
  all_names = NULL;
  if (option_msgid)

error: patch failed: argp/argp-help.c:1217
error: argp/argp-help.c: patch does not apply