Proposed resolution (approved by CWG 2024-01-19):

Change in 9.4.5 [dcl.init.list] paragraph 3 as follows:

List-initialization of an object or reference of type cv T is defined as follows:

• ...
• If T is an aggregate class and the initializer list has a single element of type cv cv1 U, where U is T or a class derived from T, the object is initialized from that element (by copy-initialization for copy-list-initialization, or by direct-initialization for direct-list-initialization).
• ...

[Accepted as a DR at the March, 2024 meeting.]

(From editorial issue 3492.)

Subclause 9.4.5 [dcl.init.list] paragraph 3 specifies:

List-initialization of an object or reference of type T is defined as follows:

• ...

Top-level cv-qualifiers should be ignored when comparing T to other types, e.g. in 9.4.5 [dcl.init.list] bullet 3.2.