http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48972
--- Comment #11 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-05-14 11:55:14 UTC --- Done: Constraint diagnostic of the Fortran standard. To be done: Adding vendor extension to support UCS-4 arguments to OPEN's and INQUIRE's file argument.