[Bug fortran/56667] Syntax error causes misleading message: "Expected PARAMETER symbol in complex constant"

[kargl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56667

kargl at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P4                          |P5
             Status|WAITING                     |NEW
                 CC|                            |kargl at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |kargl at gcc dot gnu.org

--- Comment #3 from kargl at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #2)
> How difficult would it be to provide better message? Is it worth the work?
> If no, this PR could be closed as WONTFIX.

I have a patch.  The problem is the matcher for a complex entity
runs prior to the matcher for an implied do-loop.  Errors are
queued in that order so the slightly obtuse error message is
emitted.

https://gcc.gnu.org/ml/fortran/2018-03/msg00018.html