Fix for PR18735 - self-assignment for map/multimap gives incorrect results in C++03

llvm-svn: 201021

4 files changed, 70 insertions, 0 deletions

diff --git a/libcxx/test/containers/associative/map/map.cons/copy_assign.pass.cpp b/libcxx/test/containers/associative/map/map.cons/copy_assign.pass.cpp
index ac05e291067..a1bcb30f429 100644
--- a/libcxx/test/containers/associative/map/map.cons/copy_assign.pass.cpp
+++ b/libcxx/test/containers/associative/map/map.cons/copy_assign.pass.cpp
@@ -59,6 +59,21 @@ int main()
     }
     {
         typedef std::pair<const int, double> V;
+        const V ar[] =
+        {
+            V(1, 1),
+            V(2, 1),
+            V(3, 1),
+        };
+        std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        std::map<int, double> *p = &m;
+        m = *p;
+
+        assert(m.size() == 3);
+        assert(std::equal(m.begin(), m.end(), ar));
+    }
+    {
+        typedef std::pair<const int, double> V;
         V ar[] =
         {
             V(1, 1),
diff --git a/libcxx/test/containers/associative/multimap/multimap.cons/copy_assign.pass.cpp b/libcxx/test/containers/associative/multimap/multimap.cons/copy_assign.pass.cpp
index f00f0fed166..2bdc4d6a70a 100644
--- a/libcxx/test/containers/associative/multimap/multimap.cons/copy_assign.pass.cpp
+++ b/libcxx/test/containers/associative/multimap/multimap.cons/copy_assign.pass.cpp
@@ -50,6 +50,26 @@ int main()
     }
     {
         typedef std::pair<const int, double> V;
+        const V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        std::multimap<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        std::multimap<int, double> *p = &m;
+        m = *p;
+        assert(m.size() == sizeof(ar)/sizeof(ar[0]));
+        assert(std::equal(m.begin(), m.end(), ar));
+    }
+    {
+        typedef std::pair<const int, double> V;
         V ar[] =
         {
             V(1, 1),
diff --git a/libcxx/test/containers/associative/multiset/multiset.cons/copy_assign.pass.cpp b/libcxx/test/containers/associative/multiset/multiset.cons/copy_assign.pass.cpp
index 19bdd713e9f..cca636325ff 100644
--- a/libcxx/test/containers/associative/multiset/multiset.cons/copy_assign.pass.cpp
+++ b/libcxx/test/containers/associative/multiset/multiset.cons/copy_assign.pass.cpp
@@ -70,6 +70,26 @@ int main()
     }
     {
         typedef int V;
+        const V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        std::multiset<int> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        std::multiset<int> *p = &m;
+        m = *p;
+        assert(m.size() == 9);
+        assert(std::equal(m.begin(), m.end(), ar));
+    }
+    {
+        typedef int V;
         V ar[] =
         {
             1,
diff --git a/libcxx/test/containers/associative/set/set.cons/copy_assign.pass.cpp b/libcxx/test/containers/associative/set/set.cons/copy_assign.pass.cpp
index ae83eb3c9f8..7f0f0447625 100644
--- a/libcxx/test/containers/associative/set/set.cons/copy_assign.pass.cpp
+++ b/libcxx/test/containers/associative/set/set.cons/copy_assign.pass.cpp
@@ -58,6 +58,21 @@ int main()
     }
     {
         typedef int V;
+        const V ar[] =
+        {
+            1,
+            2,
+            3
+        };
+        std::set<int> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        std::set<int> *p = &m;
+        m = *p;
+
+        assert(m.size() == 3);
+        assert(std::equal(m.begin(), m.end(), ar));
+    }
+    {
+        typedef int V;
         V ar[] =
         {
             1,