rock generates invalid C code when trying to access an interface's generic type #996

CraaazyInterface: interface <T> {
 gimme: func -> T
 doCraaazyThings: func {
 T name println()
 }
}

void test__CraaazyInterface_doCraaazyThings_impl(CraaazyInterface__reference this) {
 #line 5 "C:\\dev\\test.ooc"
 lang_String__String_println(this->T->name);
}
// Somewhere in a header file
struct _CraaazyInterface__reference {
 test__CraaazyInterfaceClass* impl;
 lang_types__Object* obj;
};
struct _test__CraaazyInterfaceClass {
 struct _lang_types__ClassClass __super__;
 void (*gimme)(void*, uint8_t*);
 void (*doCraaazyThings)(void*);
};