modify

include/rapidjson/document.h

@@ -2168,9 +2168,6 @@ public:
     }
 #endif
 
-    // Allow assignment like a ValueType.
-    using ValueType::operator=;
-
     //! Exchange the contents of this document with those of another.
     /*!
         \param rhs Another document.
@@ -2186,7 +2183,8 @@ public:
         return *this;
     }
 
-    // Allow Swap from ValueType.
+    // Allow Swap with ValueType.
+    // Refer to Effective C++/Item 33: Avoid hiding inherited names.
     using ValueType::Swap;
 
     //! free-standing swap function helper

test/unittest/documenttest.cpp

@@ -659,28 +659,13 @@ TYPED_TEST(DocumentMove, MoveAssignmentStack) {
 
 #endif // RAPIDJSON_HAS_CXX11_RVALUE_REFS
 
-// Issue 22: Memory corruption via operator= from Document
+// Issue 22: Memory corruption via operator=
 // Fixed by making unimplemented assignment operator private.
-// Prohibit assignment from Document.
-// But allow assignment from ValueType/int/double/..., like a ValueType
-TEST(Document, Assignment) {
+//TEST(Document, Assignment) {
 //  Document d1;
 //  Document d2;
 //  d1 = d2;
-
-    Document d;
-
-    Value x(1234);
-    d = x;
-    EXPECT_TRUE(x.IsNull());    // move semantic
-    EXPECT_EQ(1234, d.GetInt());
-
-    d = 1;
-    EXPECT_EQ(1, d.GetInt());
-
-    d = 12.34;
-    EXPECT_NEAR(12.34, d.GetDouble(), 0.0);
-}
+//}
 
 #ifdef __clang__
 RAPIDJSON_DIAG_POP