void main()

{

    throw globalInstance!Error("This is an Error()", null);

}

​

T globalInstance(T, bool tls = true, Args...)(auto ref Args args)

if (is(T == class))

{

    // There really should be a trait for this:

    enum classAlignment = 2 * (void*).sizeof; // until then, here's a reasonable guess :)

    enum objSize = __traits(classInstanceSize, T);

​

    static if (tls)

        static align(classAlignment) void[objSize] _store;

    else

        static __gshared align(classAlignment) void[objSize] _store;

​

    static T get()

    {

        _store[0 .. __traits(classInstanceSize, T)] = typeid(T).initializer[];

        return cast(T) _store.ptr;

    }

    auto typedStore = (cast(T function() @trusted pure nothrow @nogc) &get)();

​

    import core.lifetime : emplace;

    return emplace!T(typedStore, args);

}

​