In running tests on windows I was getting a failure running runThese. The assert that fails is here:

static bool ccp_type_widens(const Type* t, const Type* t0) {
  assert(t->meet(t0) == t, "Not monotonic");
  switch (t->base() == t0->base() ? t->base() : Type::Top) {
  case Type::Int:
    assert(t0->isa_int()->_widen <= t->isa_int()->_widen, "widen increases");
    break;
  case Type::Long:
    assert(t0->isa_long()->_widen <= t->isa_long()->_widen, "widen increases");
    break;
  }
  return true;
}