Update 'inactive_override_cache' key

Instead of just the function name, use '__qualname__.name'.

Author: BetsyMcPhail

include/pybind11/detail/internals.h

@@ -83,9 +83,9 @@ template <typename value_type>
 using type_map = std::unordered_map<std::type_index, value_type, type_hash, type_equal_to>;
 
 struct override_hash {
-    inline size_t operator()(const std::pair<const PyObject *, const char *>& v) const {
+    inline size_t operator()(const std::pair<const PyObject *, std::string>& v) const {
         size_t value = std::hash<const void *>()(v.first);
-        value ^= std::hash<const void *>()(v.second) + 0x9e3779b9 + (value<<6) + (value>>2);
+        value ^= std::hash<std::string>();
         return value;
     }
 };
@@ -97,7 +97,7 @@ struct internals {
     type_map<type_info *> registered_types_cpp; // std::type_index -> pybind11's type information
     std::unordered_map<PyTypeObject *, std::vector<type_info *>> registered_types_py; // PyTypeObject* -> base type_info(s)
     std::unordered_multimap<const void *, instance*> registered_instances; // void * -> instance*
-    std::unordered_set<std::pair<const PyObject *, const char *>, override_hash> inactive_override_cache;
+    std::unordered_set<std::pair<const PyObject *, std::string>, override_hash> inactive_override_cache;
     type_map<std::vector<bool (*)(PyObject *, void *&)>> direct_conversions;
     std::unordered_map<const PyObject *, std::vector<PyObject *>> patients;
     std::forward_list<void (*) (std::exception_ptr)> registered_exception_translators;

include/pybind11/pybind11.h

@@ -2221,7 +2221,8 @@ inline function get_type_override(const void *this_ptr, const type_info *this_ty
     if (!self)
         return function();
     handle type = type::handle_of(self);
-    auto key = std::make_pair(type.ptr(), name);
+    std::string full_name = type.attr("__qualname__").cast<std::string>() + "." + name;
+    auto key = std::make_pair(type.ptr(), full_name);
 
     /* Cache functions that aren't overridden in Python to avoid
        many costly Python dictionary lookups below */