--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tangotests/j.d	Mon Jan 14 05:11:54 2008 +0100
@@ -0,0 +1,44 @@
+module j;
+
+interface Inter1
+{
+    int func1();
+}
+
+interface Inter2
+{
+    int func2();
+}
+
+class C12 : Inter1, Inter2
+{
+    int func1()
+    {
+        return 1;
+    }
+    int func2()
+    {
+        return 2;
+    }
+}
+
+void func(Object c)
+{
+    auto i1 = cast(Inter1)c;
+    assert(i1.func1() == 1);
+    auto i2 = cast(Inter2)c;
+    assert(i2.func2() == 2);
+    auto j1 = cast(Inter1)i2;
+    assert(j1.func1() == 1);
+    auto j2 = cast(Inter2)i1;
+    assert(j2.func2() == 2);
+}
+
+void main()
+{
+    scope c = new C12;
+    func(c);
+    printf("OK\n");
+}
+
+extern(C) int printf(char*,...);