[Bug c++/108104] ICE in unify, at cp/pt.c:24333 with template partial specialization and pointer to memeber function and nullptr

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108104

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
            Summary|ICE in unify, at            |ICE in unify, at
                   |cp/pt.c:24333 with template |cp/pt.c:24333 with template
                   |partial specialization      |partial specialization and
                   |                            |pointer to memeber function
                   |                            |and nullptr

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
```
struct ss {
    void h();
};
template <int, void (ss::*m)()> struct Fred {};
template <int state> struct Fred<state, nullptr> {};
Fred<1, &ss::h> f1;
```