[Bug fortran/105243] ICE in next_char, at fortran/io.cc:160

["sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105243

--- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Mon, May 16, 2022 at 10:16:51PM +0000, sgk at troutmask dot
apl.washington.edu wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105243
> 
> --- Comment #5 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
> On Mon, May 16, 2022 at 08:27:24PM +0000, anlauf at gcc dot gnu.org wrote:
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105243
> > 
> > --- Comment #3 from anlauf at gcc dot gnu.org ---
> > (In reply to kargl from comment #2)
> > > This fixes the problem.  Someone that regularly use git will need to commit
> > > it.
> > 
> > Are you sure this is the right solution?
> > 
> 
> I quoted the F2018 standard constraint.
> 
> C708 An entity declared with the CLASS keyword shall be a dummy
>      argument or have the ALLOCATABLE or POINTER attribute.
> 
> class(t), parameter :: y
> 
> would seem to be missing all of the three listed attributes.
> 

I'll also add 

  7.3.2.3 CLASS type specifier

  The CLASS type specifier is used to declare polymorphic entities.
  A polymorphic entity is a data entity that is able to be of differing
  dynamic types during program execution.

Does is make sense to given a named constant the polymorphic property?