[Bug fortran/64324] Deferred character specific functions not permitted in generic operator interface

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64324

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-12-21
            Version|unknown                     |5.0
     Ever confirmed|0                           |1
      Known to fail|                            |4.8.4, 4.9.3, 5.0

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 4.6.4 (deferred length was not implemented in 4.5) up to trunk
(5.0). If I replace 'CHARACTER(:)' with 'CHARACTER(*)', I get two errors:

   FUNCTION tostring(arg)
  1
Error: Character-valued module procedure 'tostring' at (1) must not be assumed
length
pr64324_db.f90:7:2: Error: User operator procedure 'tostring' at (1) cannot be
assumed character length