test/runnable/imports/a15079.d

@@ -0,0 +1,50 @@
+module imports.a15079;
+
+Vector!string parseAlgorithmName()
+{
+    assert(0);
+}
+
+struct Vector(ALLOC)
+{
+    @disable this(this);
+
+    RefCounted!(Vector, ALLOC) dupr()
+    {
+        assert(0);
+    }
+}
+
+struct RefCounted(T, ALLOC)
+{
+    ~this()
+    {
+        T* objc;
+        .destroy(*objc);
+    }
+}
+
+// ----
+
+void _destructRecurse(S)(ref S s)
+    if (is(S == struct))
+{
+    static if (__traits(hasMember, S, "__xdtor") &&
+               __traits(isSame, S, __traits(parent, s.__xdtor)))
+    {
+        s.__xdtor();
+    }
+}
+
+void destroy(T)(ref T obj) if (is(T == struct))
+{
+    _destructRecurse(obj);
+    () @trusted {
+        auto buf = (cast(ubyte*) &obj)[0 .. T.sizeof];
+        auto init = cast(ubyte[])typeid(T).init();
+        if (init.ptr is null) // null ptr means initialize to 0s
+            buf[] = 0;
+        else
+            buf[] = init[];
+    } ();
+}

test/runnable/test15079.d

@@ -0,0 +1,5 @@
+module test15079;
+
+import imports.a15079;
+
+void main() {}