On 06/24/15 16:46, Daniel Lehman wrote: > +DEFINE_RTTI_DATA0(locale__Locimp, 0, ".?AV_Locimp at locale@std@@") There should be: DEFINE_RTTI_DATA1(locale__Locimp, 0, &locale_facet_rtti_base_descriptor, ".?AV_Locimp at locale@std@@") Cheers, Piotr