1 files changed, 104 insertions, 1 deletions

diff --git a/libcxx/test/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.spec/swap.pass.cpp b/libcxx/test/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.spec/swap.pass.cpp
index 850125f8cf2..d21a50bb860 100644
--- a/libcxx/test/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.spec/swap.pass.cpp
+++ b/libcxx/test/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.spec/swap.pass.cpp
@@ -1 +1,104 @@
-//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <memory>

// shared_ptr

// template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b);

#include <memory>
#include <cassert>

struct A
{
    static int count;

    A() {++count;}
    A(const A&) {++count;}
    ~A() {--count;}
};

int A::count = 0;

int main()
{
    {
        A* ptr1 = new A;
        A* ptr2 = new A;
        std::shared_ptr<A> p1(ptr1);
        {
            std::shared_ptr<A> p2(ptr2);
            swap(p1, p2);
            assert(p1.use_count() == 1);
            assert(p1.get() == ptr2);
            assert(p2.use_count() == 1);
            assert(p2.get() == ptr1);
            assert(A::count == 2);
        }
        assert(p1.use_count() == 1);
        assert(p1.get() == ptr2);
        assert(A::count == 1);
    }
    assert(A::count == 0);
    {
        A* ptr1 = new A;
        A* ptr2 = 0;
        std::shared_ptr<A> p1(ptr1);
        {
            std::shared_ptr<A> p2;
            swap(p1, p2);
            assert(p1.use_count() == 0);
            assert(p1.get() == ptr2);
            assert(p2.use_count() == 1);
            assert(p2.get() == ptr1);
            assert(A::count == 1);
        }
        assert(p1.use_count() == 0);
        assert(p1.get() == ptr2);
        assert(A::count == 0);
    }
    assert(A::count == 0);
    {
        A* ptr1 = 0;
        A* ptr2 = new A;
        std::shared_ptr<A> p1;
        {
            std::shared_ptr<A> p2(ptr2);
            swap(p1, p2);
            assert(p1.use_count() == 1);
            assert(p1.get() == ptr2);
            assert(p2.use_count() == 0);
            assert(p2.get() == ptr1);
            assert(A::count == 1);
        }
        assert(p1.use_count() == 1);
        assert(p1.get() == ptr2);
        assert(A::count == 1);
    }
    assert(A::count == 0);
    {
        A* ptr1 = 0;
        A* ptr2 = 0;
        std::shared_ptr<A> p1;
        {
            std::shared_ptr<A> p2;
            swap(p1, p2);
            assert(p1.use_count() == 0);
            assert(p1.get() == ptr2);
            assert(p2.use_count() == 0);
            assert(p2.get() == ptr1);
            assert(A::count == 0);
        }
        assert(p1.use_count() == 0);
        assert(p1.get() == ptr2);
        assert(A::count == 0);
    }
    assert(A::count == 0);
}
\ No newline at end of file
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b);
+
+#include <memory>
+#include <cassert>
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main()
+{
+    {
+        A* ptr1 = new A;
+        A* ptr2 = new A;
+        std::shared_ptr<A> p1(ptr1);
+        {
+            std::shared_ptr<A> p2(ptr2);
+            swap(p1, p2);
+            assert(p1.use_count() == 1);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 1);
+            assert(p2.get() == ptr1);
+            assert(A::count == 2);
+        }
+        assert(p1.use_count() == 1);
+        assert(p1.get() == ptr2);
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+        A* ptr1 = new A;
+        A* ptr2 = 0;
+        std::shared_ptr<A> p1(ptr1);
+        {
+            std::shared_ptr<A> p2;
+            swap(p1, p2);
+            assert(p1.use_count() == 0);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 1);
+            assert(p2.get() == ptr1);
+            assert(A::count == 1);
+        }
+        assert(p1.use_count() == 0);
+        assert(p1.get() == ptr2);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+    {
+        A* ptr1 = 0;
+        A* ptr2 = new A;
+        std::shared_ptr<A> p1;
+        {
+            std::shared_ptr<A> p2(ptr2);
+            swap(p1, p2);
+            assert(p1.use_count() == 1);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 0);
+            assert(p2.get() == ptr1);
+            assert(A::count == 1);
+        }
+        assert(p1.use_count() == 1);
+        assert(p1.get() == ptr2);
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+        A* ptr1 = 0;
+        A* ptr2 = 0;
+        std::shared_ptr<A> p1;
+        {
+            std::shared_ptr<A> p2;
+            swap(p1, p2);
+            assert(p1.use_count() == 0);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 0);
+            assert(p2.get() == ptr1);
+            assert(A::count == 0);
+        }
+        assert(p1.use_count() == 0);
+        assert(p1.get() == ptr2);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+}