CWG1598 Criterion for equality of pointers to members
CWG1629 Can a closure class be a literal type?
CWG1658 Deleted default constructor for abstract class via destructor

Also resolves CWG1611.
CWG1660 member-declaration requirements and unnamed bit-fields
CWG1666 Address constant expressions
CWG1687 Conversions of operands of built-in operators
CWG1689 Syntactic nonterminal for operand of alignas