[Bug c++/28253] New: [4.0/4.1/4.2 regression] ICE with invalid covariant return

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

The following invalid testcase triggers an ICE since GCC 3.4.0:

=========================================
struct A
{
  virtual A* foo();
};

struct B : virtual A
{
  virtual B* foo();
};

struct C : B
{
  virtual C& foo();
};
=========================================

bug.cc:13: error: conflicting return type specified for 'virtual C& C::foo()'
bug.cc:8: error:   overriding 'virtual B* B::foo()'
bug.cc:12: internal compiler error: in update_vtable_entry_for_fn, at
cp/class.c:2105
Please submit a full bug report, [etc.]


-- 
           Summary: [4.0/4.1/4.2 regression] ICE with invalid covariant
                    return
           Product: gcc
           Version: 4.2.0
            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=28253