[Bug c++/69865] -trigraphs option broken

[bernd.edlinger at hotmail dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69865

--- Comment #2 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
in gcc/c-family/c-opts.c:

following code in line 805:

  /* Set C++ standard to C++14 if not specified on the command line.  */
  if (c_dialect_cxx () && cxx_dialect == cxx_unset)
    set_std_cxx14 (/*ISO*/false);

... defeats this in line 667 above:

    case OPT_trigraphs:
      cpp_opts->trigraphs = 1;
      break;