[Bug c++/46862] New: ICE on std::decimal::decimal32 without any fields

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46862

           Summary: ICE on std::decimal::decimal32 without any fields
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jakub@gcc.gnu.org


int foo ();
static __typeof (foo) bar __attribute__ ((__weakref__ ("foo")));
namespace std
{
  namespace decimal
  {
    class decimal32;
    template <class> struct S { };
    template <> struct S <decimal32> { static const bool value = true; };
    template <class> class T { };
    class decimal32 : public T <decimal32> { };
  }
}

ICEs during mangling, as first_field returns NULL.