[Bug fortran/84073] In -fc-prototypes fixed (nonzero) length strings are mapped to plain char in prototype.

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84073

--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The real error is that lengths unequal to one are not
C interoperable, and should be rejected.

From the F2003 standard, 15.2.1:

"if the type is character, inter-
operability also requires that the length type parameter be omitted or be
specified by an initialization
expression whose value is one."