import std.stdio;

​

void main()

{

    bugTest();

}

​

// It's from https://github.com/Kozzi11/experimental.xml/blob/master/source/std/experimental/xml/writer.d

void bugTest()

{

    string dom = "XML DOM";

​

    auto file = File("catalogue.xml", "w");

​

    // It's OK

    // auto textWriter = file.lockingTextWriter;

    // textWriter.writerFor.write(dom);

​

    // There's a bug

    auto writer = writerFor(file.lockingTextWriter);

    writer.write(dom);

​

    file.close();

}

​

auto writerFor(OutRange)(auto ref OutRange outRange)

{

    auto res = Writer!(OutRange)();

    res.setSink(outRange);

    return res;

}

​

struct Writer(OutRange)

{

    private OutRange* output;

​

    void setSink(ref OutRange output)

    {

        this.output = &output;

        writeln("in setSink: ", this.output);

    }

​

    // void setSink(typeof(output) output)

    // {

    //  this.output = output;

    // }

​

    void write(string s)

    {

        writeln("in write: ", output);

        output.put(s);

    }

}