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
