1 files changed, 40 insertions, 0 deletions
diff --git a/gcc/testsuite/gdc.test/compilable/test18216.d b/gcc/testsuite/gdc.test/compilable/test18216.d
new file mode 100644
index 00000000000..43f5629a3c7
--- /dev/null
+++ b/gcc/testsuite/gdc.test/compilable/test18216.d
@@ -0,0 +1,40 @@
+// https://issues.dlang.org/show_bug.cgi?id=18216
+
+struct Node
+{
+    mixin Type!();
+    Pointer left;
+}
+
+mixin template Type()
+{
+    alias Base = typeof(this);
+
+    static struct Proxy
+    {
+        struct Node
+        {
+            Base m_payload;
+        }
+        static immutable default_value = Base.init; // just remove this will work
+    }
+
+    alias pNode = shared(Proxy.Node)*;
+
+    static struct Pointer
+    {
+        Base*   _ptr;
+        auto ptr()
+        {
+            return cast(pNode) _ptr;
+        }
+
+        void opAssign(ref Pointer other) {} // just remove this will work
+
+        alias getThis this; // just remove this will work
+        ref auto getThis() return
+        {
+            return ptr.m_payload;
+        }
+    }
+}