CWG1878 operator auto template
CWG1865 Pointer arithmetic and multi-level qualification conversions

    Fix reference in previous commit.
CWG1882 Reserved names without library use
CWG1885 Return value of a function is underspecified
CWG1887 Problems with :: as nested-name-specifier
CWG1891 Move constructor/assignment for closure class
CWG1902 What makes a conversion “otherwise ill-formed”?
CWG1909 Member class template with the same name as the class