N3644 support for <unordered_set> and <unordered_map>

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@187915 91177308-0d34-0410-b5e6-96231b3b80d8

include/__hash_table

@@ -112,6 +112,9 @@ public:
                                                          pointer;
 
     _LIBCPP_INLINE_VISIBILITY __hash_iterator() _NOEXCEPT
+#if _LIBCPP_STD_VER > 11
+    : __node_(nullptr)
+#endif
     {
 #if _LIBCPP_DEBUG_LEVEL >= 2
         __get_db()->__insert_i(this);
@@ -248,6 +251,9 @@ public:
     typedef __hash_iterator<__non_const_node_pointer> __non_const_iterator;
 
     _LIBCPP_INLINE_VISIBILITY __hash_const_iterator() _NOEXCEPT
+#if _LIBCPP_STD_VER > 11
+    : __node_(nullptr)
+#endif
     {
 #if _LIBCPP_DEBUG_LEVEL >= 2
         __get_db()->__insert_i(this);

test/containers/unord/unord.map/iterators.pass.cpp

@@ -108,4 +108,18 @@ int main()
         C::const_iterator i;
     }
 #endif
+#if _LIBCPP_STD_VER > 11
+    { // N3664 testing
+        typedef std::unordered_map<int,double> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+        assert ( ii1 == cii );
+        
+        assert ( !(ii1 != ii2 ));
+        assert ( !(ii1 != cii ));
+    }
+#endif
 }

test/containers/unord/unord.multimap/iterators.pass.cpp

@@ -114,4 +114,18 @@ int main()
         C::const_iterator i;
     }
 #endif
+#if _LIBCPP_STD_VER > 11
+    { // N3664 testing
+        typedef std::unordered_multimap<int,double> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+        assert ( ii1 == cii );
+
+        assert ( !(ii1 != ii2 ));
+        assert ( !(ii1 != cii ));
+    }
+#endif
 }

test/containers/unord/unord.multiset/iterators.pass.cpp

@@ -107,4 +107,18 @@ int main()
         C::const_iterator i;
     }
 #endif
+#if _LIBCPP_STD_VER > 11
+    { // N3664 testing
+        typedef std::unordered_multiset<int> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+        assert ( ii1 == cii );
+
+        assert ( !(ii1 != ii2 ));
+        assert ( !(ii1 != cii ));
+    }
+#endif
 }

test/containers/unord/unord.set/iterators.pass.cpp

@@ -107,4 +107,18 @@ int main()
         C::const_iterator i;
     }
 #endif
+#if _LIBCPP_STD_VER > 11
+    { // N3664 testing
+        typedef std::unordered_set<int> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+        assert ( ii1 == cii );
+
+        assert ( !(ii1 != ii2 ));
+        assert ( !(ii1 != cii ));
+    }
+#endif
 }