Add an explicit specialization of container_hash::is_described_class …

include/boost/filesystem/path.hpp

@@ -2419,6 +2419,22 @@ inline typename std::enable_if<
 #endif
 }
 
+} // namespace filesystem
+
+namespace container_hash
+{
+
+// Since the hash_value overload above is low priority, and since
+// `path` becomes a described class when reflection is available,
+// we need to explicitly specialize is_described_class to avoid
+// the ambiguity with hash_value for described classes
+
+template<> struct is_described_class<filesystem::path>: std::false_type {};
+
+} // namespace container_hash
+
+namespace filesystem {
+
 #else // !defined(BOOST_FILESYSTEM_DOXYGEN)
 
 //! \name path comparison