NestedClassDecl.cpp

auto foo() {
    
    class Bar {
    public:
        int baz;
    };
    
    Bar ret;
    ret.baz = 3;
    return ret;
}

void usage() {
    // Can not reference the returned value by anything BUT auto
    // however the compiler is absolutely aware of the returned
    // object's structure
    auto val = foo();
    
    int baz = val.baz; // 3
}