CWG Issue 1453 (original) (raw)

This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 118e. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.

2025-11-05

1453. Volatile members in literal classes?

Section: 6.9 [basic.types]Status: CD3Submitter: Richard SmithDate: 2012-01-02

[Moved to DR at the October, 2012 meeting.]

Can a literal class have a volatile member? For example,

struct S { constexpr S() : n(0) { } volatile int n; };

constexpr S s; // causes volatile write to S::n

Proposed resolution (February, 2012):

Change 6.9 [basic.types] paragraph 10 as follows:

A type is a literal type if it is:

• ...
• a class type (Clause 11 [class]) that has all the following properties:
  • ...
  • all of its non-static data members and base classes are ofnon-volatile literal types.