[Bug fortran/77391] gfortran allows CHARACTER(LEN=:),PARAMETER:: STRING='constant' buts does not report it as an extension

["jvdelisle at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77391

Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jvdelisle at gcc dot gnu.org

--- Comment #5 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
F2008 4.2

9 An asterisk as a type-param-value specifies that a length type parameter is
an assumed type parameter. It is used for a dummy argument to assume the type
parameter value from the effective argument, for an associate name in a SELECT
TYPE construct to assume the type parameter value from the corresponding
selector, and for a named constant of type character to assume the character
length from the constant-expr .

I think the last fragment clarifies that the following is the right way to do
it.

character(len=*),parameter :: ident1="@(#)one(3f): with asterisk"

and C402 excludes the use of the colon without exception

Repeating myself:

"named constant of type character to assume the character length from the
constant-expr."

Is very explicit.