This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 110b. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.

2023-01-15


2229. Volatile unnamed bit-fields

Section: 11.4.10  [class.bit]     Status: CD5     Submitter: David Majnemer     Date: 2016-02-08

[Accepted as a DR at the March, 2018 (Jacksonville) meeting.]

According to 11.4.10 [class.bit] paragraph 2, unnamed bit-fields are not members, but there does not appear to be a prohibition against their being declared volatile. Is this intended?

Proposed resolution (November, 2017)

Change 11.4.10 [class.bit] paragraph 2 as follows:

A declaration for a bit-field that omits the identifier declares an unnamed bit-field. Unnamed bit-fields are not members and cannot be initialized. An unnamed bit-field shall not be declared with a cv-qualified type. [Note: An unnamed bit-field is useful for padding...