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// { dg-do assemble } // prms-id: 5274 class VHDLIdentifier; class VHDLPackageProtoRep { public: int thing(); private: virtual VHDLIdentifier &actual_name() ; }; extern void form(const char *format, ... ); int VHDLPackageProtoRep::thing() { form("package `%s'", (char *)actual_name()); // { dg-error "" } can't convert from incomplete type return 0; }