This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 117b. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2025-08-11
2511. cv-qualified bit-fieldsSection: 11.4.10 [class.bit] Status: CD6 Submitter: Aaron Ballman Date: 2021-09-15[Accepted at the February, 2022 meeting.]
According to 11.4.10 [class.bit] paragraph 1,
A bit-field shall have integral or enumeration type
This apparently does not allow for cv-qualification in a bit-field type.
Notes from the December, 2021 meeting:
As of N4901, there is no longer an issue regarding the integral types; 6.9.2 [basic.fundamental] paragraph 11 says,
The character types, bool, the signed and unsigned integer types, and cv-qualified versions (6.9.5 [basic.type.qualifier]) thereof, are collectively termed integral types.
Proposed resolution (December, 2021):
A bit-field shall have integral or (possibly cv-qualified) enumeration type
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