[Bug c++/24243] [4.0 regression] lookup fails to match to function call, const-sensitive

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

------- Comment #2 from pinskia at gcc dot gnu dot org  2005-10-06 19:48 -------
Here is the reduced testcase:
template <class R, template <class> class P, class T, class A>
 inline int  mem_fun(R (T::*f)(A), const P<T>& null) {}

template <class T> class never_ptr {};

struct instance_collection_base {
  int&  pair_dump(int&) const;
  static const never_ptr<const instance_collection_base> null;
};

int& dump(int& o) {
mem_fun(&instance_collection_base::pair_dump,  
instance_collection_base::null);
}

But I think this is invalid as "const instance_collection_base" is not the same
as instance_collection_base.  so T cannot be matched to "const
instance_collection_base" as it was before 4.1.0/4.0.2.

ICC and Comeau rejects the same code too for the same reason.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24243