From 6dff618d7db3d0e716638bf8010326b7b128f461 Mon Sep 17 00:00:00 2001
From: Marshall Clow <mclow.lists@gmail.com>
Date: Thu, 12 Sep 2013 03:00:31 +0000
Subject: [PATCH] LWG Issue 2210 (Part #6): unordered_map and
 unordered_multimap

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@190576 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/unordered_map                         |  80 ++++++++++++
 .../unord.map.cnstr/allocator.pass.cpp        |  42 +++++++
 .../unord.map/unord.map.cnstr/init.pass.cpp   |  66 ++++++++++
 .../unord.map/unord.map.cnstr/range.pass.cpp  |  69 ++++++++++
 .../unord.multimap.cnstr/allocator.pass.cpp   |  42 +++++++
 .../unord.multimap.cnstr/init.pass.cpp        | 114 +++++++++++++++++
 .../unord.multimap.cnstr/range.pass.cpp       | 118 ++++++++++++++++++
 7 files changed, 531 insertions(+)

diff --git a/include/unordered_map b/include/unordered_map
index fc30c2a5..e1a3f641 100644
--- a/include/unordered_map
+++ b/include/unordered_map
@@ -69,6 +69,22 @@ public:
     unordered_map(initializer_list<value_type>, size_type n = 0,
                   const hasher& hf = hasher(), const key_equal& eql = key_equal(),
                   const allocator_type& a = allocator_type());
+    unordered_map(size_type n, const allocator_type& a)
+      : unordered_map(n, hasher(), key_equal(), a) {}  // C++14
+    unordered_map(size_type n, const hasher& hf, const allocator_type& a)
+      : unordered_map(n, hf, key_equal(), a) {}  // C++14
+    template <class InputIterator>
+      unordered_map(InputIterator f, InputIterator l, size_type n, const allocator_type& a)
+      : unordered_map(f, l, n, hasher(), key_equal(), a) {}  // C++14
+    template <class InputIterator>
+      unordered_map(InputIterator f, InputIterator l, size_type n, const hasher& hf, 
+        const allocator_type& a)
+      : unordered_map(f, l, n, hf, key_equal(), a) {}  // C++14
+    unordered_map(initializer_list<value_type> il, size_type n, const allocator_type& a)
+      : unordered_map(il, n, hasher(), key_equal(), a) {}  // C++14
+    unordered_map(initializer_list<value_type> il, size_type n, const hasher& hf, 
+      const allocator_type& a)
+      : unordered_map(il, n, hf, key_equal(), a) {}  // C++14
     ~unordered_map();
     unordered_map& operator=(const unordered_map&);
     unordered_map& operator=(unordered_map&&)
@@ -217,6 +233,22 @@ public:
     unordered_multimap(initializer_list<value_type>, size_type n = 0,
                   const hasher& hf = hasher(), const key_equal& eql = key_equal(),
                   const allocator_type& a = allocator_type());
+    unordered_multimap(size_type n, const allocator_type& a)
+      : unordered_multimap(n, hasher(), key_equal(), a) {}  // C++14
+    unordered_multimap(size_type n, const hasher& hf, const allocator_type& a)
+      : unordered_multimap(n, hf, key_equal(), a) {}  // C++14
+    template <class InputIterator>
+      unordered_multimap(InputIterator f, InputIterator l, size_type n, const allocator_type& a)
+      : unordered_multimap(f, l, n, hasher(), key_equal(), a) {}  // C++14
+    template <class InputIterator>
+      unordered_multimap(InputIterator f, InputIterator l, size_type n, const hasher& hf, 
+        const allocator_type& a)
+      : unordered_multimap(f, l, n, hf, key_equal(), a) {}  // C++14
+    unordered_multimap(initializer_list<value_type> il, size_type n, const allocator_type& a)
+      : unordered_multimap(il, n, hasher(), key_equal(), a) {}  // C++14
+    unordered_multimap(initializer_list<value_type> il, size_type n, const hasher& hf, 
+      const allocator_type& a)
+      : unordered_multimap(il, n, hf, key_equal(), a) {}  // C++14
     ~unordered_multimap();
     unordered_multimap& operator=(const unordered_multimap&);
     unordered_multimap& operator=(unordered_multimap&&)
@@ -745,6 +777,30 @@ public:
                   const hasher& __hf, const key_equal& __eql,
                   const allocator_type& __a);
 #endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#if _LIBCPP_STD_VER > 11
+    _LIBCPP_INLINE_VISIBILITY
+    unordered_map(size_type __n, const allocator_type& __a)
+      : unordered_map(__n, hasher(), key_equal(), __a) {}
+    _LIBCPP_INLINE_VISIBILITY
+    unordered_map(size_type __n, const hasher& __hf, const allocator_type& __a)
+      : unordered_map(__n, __hf, key_equal(), __a) {}
+    template <class _InputIterator>
+    _LIBCPP_INLINE_VISIBILITY
+      unordered_map(_InputIterator __first, _InputIterator __last, size_type __n, const allocator_type& __a)
+      : unordered_map(__first, __last, __n, hasher(), key_equal(), __a) {}
+    template <class _InputIterator>
+    _LIBCPP_INLINE_VISIBILITY
+      unordered_map(_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, 
+        const allocator_type& __a)
+      : unordered_map(__first, __last, __n, __hf, key_equal(), __a) {}
+    _LIBCPP_INLINE_VISIBILITY
+    unordered_map(initializer_list<value_type> __il, size_type __n, const allocator_type& __a)
+      : unordered_map(__il, __n, hasher(), key_equal(), __a) {}
+    _LIBCPP_INLINE_VISIBILITY
+    unordered_map(initializer_list<value_type> __il, size_type __n, const hasher& __hf, 
+      const allocator_type& __a)
+      : unordered_map(__il, __n, __hf, key_equal(), __a) {}
+#endif
     // ~unordered_map() = default;
     _LIBCPP_INLINE_VISIBILITY
     unordered_map& operator=(const unordered_map& __u)
@@ -1499,6 +1555,30 @@ public:
                        const hasher& __hf, const key_equal& __eql,
                        const allocator_type& __a);
 #endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#if _LIBCPP_STD_VER > 11
+    _LIBCPP_INLINE_VISIBILITY
+    unordered_multimap(size_type __n, const allocator_type& __a)
+      : unordered_multimap(__n, hasher(), key_equal(), __a) {}
+    _LIBCPP_INLINE_VISIBILITY
+    unordered_multimap(size_type __n, const hasher& __hf, const allocator_type& __a)
+      : unordered_multimap(__n, __hf, key_equal(), __a) {}
+    template <class _InputIterator>
+    _LIBCPP_INLINE_VISIBILITY
+      unordered_multimap(_InputIterator __first, _InputIterator __last, size_type __n, const allocator_type& __a)
+      : unordered_multimap(__first, __last, __n, hasher(), key_equal(), __a) {}
+    template <class _InputIterator>
+    _LIBCPP_INLINE_VISIBILITY
+      unordered_multimap(_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, 
+        const allocator_type& __a)
+      : unordered_multimap(__first, __last, __n, __hf, key_equal(), __a) {}
+    _LIBCPP_INLINE_VISIBILITY
+    unordered_multimap(initializer_list<value_type> __il, size_type __n, const allocator_type& __a)
+      : unordered_multimap(__il, __n, hasher(), key_equal(), __a) {}
+    _LIBCPP_INLINE_VISIBILITY
+    unordered_multimap(initializer_list<value_type> __il, size_type __n, const hasher& __hf, 
+      const allocator_type& __a)
+      : unordered_multimap(__il, __n, __hf, key_equal(), __a) {}
+#endif
     // ~unordered_multimap() = default;
     _LIBCPP_INLINE_VISIBILITY
     unordered_multimap& operator=(const unordered_multimap& __u)
diff --git a/test/containers/unord/unord.map/unord.map.cnstr/allocator.pass.cpp b/test/containers/unord/unord.map/unord.map.cnstr/allocator.pass.cpp
index 0f9e4cef..b49d6bfe 100644
--- a/test/containers/unord/unord.map/unord.map.cnstr/allocator.pass.cpp
+++ b/test/containers/unord/unord.map/unord.map.cnstr/allocator.pass.cpp
@@ -65,5 +65,47 @@ int main()
         assert(c.load_factor() == 0);
         assert(c.max_load_factor() == 1);
     }
+#if _LIBCPP_STD_VER > 11
+    {
+        typedef NotConstructible T;
+        typedef test_allocator<std::pair<const T, T>> A;
+        typedef test_hash<std::hash<T>> HF;
+        typedef test_compare<std::equal_to<T>> Comp;
+        typedef std::unordered_map<T, T, HF, Comp, A> C;
+        
+        A a(10);
+        C c(2, a);
+        assert(c.bucket_count() == 2);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef NotConstructible T;
+        typedef test_allocator<std::pair<const T, T>> A;
+        typedef test_hash<std::hash<T>> HF;
+        typedef test_compare<std::equal_to<T>> Comp;
+        typedef std::unordered_map<T, T, HF, Comp, A> C;
+
+        A a(10);
+        HF hf(12);
+        C c(2, hf, a);
+        assert(c.bucket_count() == 2);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
 #endif
 }
diff --git a/test/containers/unord/unord.map/unord.map.cnstr/init.pass.cpp b/test/containers/unord/unord.map/unord.map.cnstr/init.pass.cpp
index be5a70fc..594331c3 100644
--- a/test/containers/unord/unord.map/unord.map.cnstr/init.pass.cpp
+++ b/test/containers/unord/unord.map/unord.map.cnstr/init.pass.cpp
@@ -91,6 +91,72 @@ int main()
         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
         assert(c.max_load_factor() == 1);
     }
+#if _LIBCPP_STD_VER > 11
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<std::hash<int>> HF;
+        typedef test_compare<std::equal_to<int>> Comp;
+        typedef std::unordered_map<int, std::string, HF, Comp, A> C;
+
+        A a(42);
+        C c ( {
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              }, 12, a);
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<std::hash<int> >());
+        assert(c.key_eq() == test_compare<std::equal_to<int> >());
+        assert(c.get_allocator() == a);
+        assert(!c.empty());
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<std::hash<int>> HF;
+        typedef test_compare<std::equal_to<int>> Comp;
+        typedef std::unordered_map<int, std::string, HF, Comp, A> C;
+
+        HF hf(42);
+        A a(43);
+        C c ( {
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              }, 12, hf, a);
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == test_hash<std::hash<int> >()));
+        assert(c.key_eq() == test_compare<std::equal_to<int> >());
+        assert(c.get_allocator() == a);
+        assert(!c.empty());
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
 #endif
 #endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
 }
diff --git a/test/containers/unord/unord.map/unord.map.cnstr/range.pass.cpp b/test/containers/unord/unord.map/unord.map.cnstr/range.pass.cpp
index 25e1d8d6..bc316d32 100644
--- a/test/containers/unord/unord.map/unord.map.cnstr/range.pass.cpp
+++ b/test/containers/unord/unord.map/unord.map.cnstr/range.pass.cpp
@@ -97,5 +97,74 @@ int main()
         assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
         assert(c.max_load_factor() == 1);
     }
+#if _LIBCPP_STD_VER > 11
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<std::hash<int>> HF;
+        typedef test_compare<std::equal_to<int>> Comp;
+        typedef std::unordered_map<int, std::string, HF, Comp, A> C;
+
+        P arr[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(input_iterator<P*>(arr), input_iterator<P*>(arr + sizeof(arr)/sizeof(arr[0])), 14);
+        assert(c.bucket_count() >= 14);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<std::hash<int>> HF;
+        typedef test_compare<std::equal_to<int>> Comp;
+        typedef std::unordered_map<int, std::string, HF, Comp, A> C;
+
+        P arr[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        HF hf(42);
+        A a(43);
+        C c(input_iterator<P*>(arr), input_iterator<P*>(arr + sizeof(arr)/sizeof(arr[0])), 14, hf, a);
+        assert(c.bucket_count() >= 14);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!c.empty());
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
 #endif
 }
diff --git a/test/containers/unord/unord.multimap/unord.multimap.cnstr/allocator.pass.cpp b/test/containers/unord/unord.multimap/unord.multimap.cnstr/allocator.pass.cpp
index 1f7f4034..dbcdca44 100644
--- a/test/containers/unord/unord.multimap/unord.multimap.cnstr/allocator.pass.cpp
+++ b/test/containers/unord/unord.multimap/unord.multimap.cnstr/allocator.pass.cpp
@@ -65,5 +65,47 @@ int main()
         assert(c.load_factor() == 0);
         assert(c.max_load_factor() == 1);
     }
+#if _LIBCPP_STD_VER > 11
+    {
+        typedef NotConstructible T;
+        typedef test_allocator<std::pair<const T, T>> A;
+        typedef test_hash<std::hash<T>> HF;
+        typedef test_compare<std::equal_to<T>> Comp;
+        typedef std::unordered_multimap<T, T, HF, Comp, A> C;
+        
+        A a(10);
+        C c(2, a);
+        assert(c.bucket_count() == 2);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef NotConstructible T;
+        typedef test_allocator<std::pair<const T, T>> A;
+        typedef test_hash<std::hash<T>> HF;
+        typedef test_compare<std::equal_to<T>> Comp;
+        typedef std::unordered_multimap<T, T, HF, Comp, A> C;
+
+        A a(10);
+        HF hf(12);
+        C c(2, hf, a);
+        assert(c.bucket_count() == 2);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
 #endif
 }
diff --git a/test/containers/unord/unord.multimap/unord.multimap.cnstr/init.pass.cpp b/test/containers/unord/unord.multimap/unord.multimap.cnstr/init.pass.cpp
index b4b2ac58..bcde6666 100644
--- a/test/containers/unord/unord.multimap/unord.multimap.cnstr/init.pass.cpp
+++ b/test/containers/unord/unord.multimap/unord.multimap.cnstr/init.pass.cpp
@@ -135,6 +135,120 @@ int main()
         assert(c.key_eq() == test_compare<std::equal_to<int> >());
         assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
     }
+#if _LIBCPP_STD_VER > 11
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<std::hash<int>> HF;
+        typedef test_compare<std::equal_to<int>> Comp;
+        typedef std::unordered_multimap<int, std::string, HF, Comp, A> C;
+
+        A a(42);
+        C c ({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              }, 12, a );
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        C::const_iterator i = eq.first;
+        assert(i->first == 1);
+        assert(i->second == "one");
+        ++i;
+        assert(i->first == 1);
+        assert(i->second == "four");
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        i = eq.first;
+        assert(i->first == 2);
+        assert(i->second == "two");
+        ++i;
+        assert(i->first == 2);
+        assert(i->second == "four");
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<std::hash<int>> HF;
+        typedef test_compare<std::equal_to<int>> Comp;
+        typedef std::unordered_multimap<int, std::string, HF, Comp, A> C;
+
+        HF hf(42);
+        A a(43);
+        C c ({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              }, 12, hf, a );
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        C::const_iterator i = eq.first;
+        assert(i->first == 1);
+        assert(i->second == "one");
+        ++i;
+        assert(i->first == 1);
+        assert(i->second == "four");
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        i = eq.first;
+        assert(i->first == 2);
+        assert(i->second == "two");
+        ++i;
+        assert(i->first == 2);
+        assert(i->second == "four");
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+    }
+#endif
 #endif
 #endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
 }
diff --git a/test/containers/unord/unord.multimap/unord.multimap.cnstr/range.pass.cpp b/test/containers/unord/unord.multimap/unord.multimap.cnstr/range.pass.cpp
index 74171c71..a4314813 100644
--- a/test/containers/unord/unord.multimap/unord.multimap.cnstr/range.pass.cpp
+++ b/test/containers/unord/unord.multimap/unord.multimap.cnstr/range.pass.cpp
@@ -141,5 +141,123 @@ int main()
         assert(c.key_eq() == test_compare<std::equal_to<int> >());
         assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
     }
+#if _LIBCPP_STD_VER > 11
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<std::hash<int>> HF;
+        typedef test_compare<std::equal_to<int>> Comp;
+        typedef std::unordered_multimap<int, std::string, HF, Comp, A> C;
+
+        P arr[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+         A a(42);
+       C c(input_iterator<P*>(arr), input_iterator<P*>(arr + sizeof(arr)/sizeof(arr[0])), 14, a);
+        assert(c.bucket_count() >= 14);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        C::const_iterator i = eq.first;
+        assert(i->first == 1);
+        assert(i->second == "one");
+        ++i;
+        assert(i->first == 1);
+        assert(i->second == "four");
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        i = eq.first;
+        assert(i->first == 2);
+        assert(i->second == "two");
+        ++i;
+        assert(i->first == 2);
+        assert(i->second == "four");
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<std::hash<int>> HF;
+        typedef test_compare<std::equal_to<int>> Comp;
+        typedef std::unordered_multimap<int, std::string, HF, Comp, A> C;
+
+        P arr[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        A a(42);
+        HF hf (43);
+        C c(input_iterator<P*>(arr), input_iterator<P*>(arr + sizeof(arr)/sizeof(arr[0])), 12, hf, a );
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        C::const_iterator i = eq.first;
+        assert(i->first == 1);
+        assert(i->second == "one");
+        ++i;
+        assert(i->first == 1);
+        assert(i->second == "four");
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        i = eq.first;
+        assert(i->first == 2);
+        assert(i->second == "two");
+        ++i;
+        assert(i->first == 2);
+        assert(i->second == "four");
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+    }
+#endif
 #endif
 }