This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 112e. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
[Accepted as a DR at the February, 2023 meeting.]
EWG resolved to reflect the understanding of semantic ignorability of attributes in a note.
Proposed resolution (approved by CWG 2023-02-09):
Add to 9.12.1 [dcl.attr.grammar] paragraph 6 as follows:
[Note 4: A program is ill-formed if it contains an attribute specified in 9.12 [dcl.attr] that violates the rules specifying to which entity or statement the attribute can apply or the syntax rules for the attribute's attribute-argument-clause, if any. —end note]