More fallout from the variadic templates on mainline:

===========================================================
template <typename... T> struct A
{
  A(T* p) { (A<T...>*)(p); }
};

A<int> a(0);
===========================================================

bug.cc:3: error: parameter packs not expanded with `...':
bug.cc:3: note:         'T'
bug.cc:3: error: parameter packs not expanded with `...':
bug.cc:3: note:         'T'
bug.cc: In constructor 'A<T>::A(T*) [with T = int]':
bug.cc:6:   instantiated from here
bug.cc:3: internal compiler error: tree check: expected record_type or
union_type or qual_union_type, have template_type_parm in lookup_base, at
cp/search.c:213
Please submit a full bug report, [etc.]

Similar to PR31436 as this is also invalid use of a parameter pack
in a function argument and triggers an ICE in a lookup_* function.


-- 
           Summary: [4.3 regression] ICE with invalid use of parameter pack
                    in member function arg
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31437

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