P4101 R1 Consteval-only Values for C++26

[hanickadot]

P4101R0 Consteval-only Values for C++26 (Barry Revzin)

[jensmaurer]

CWG 2026-03-23 in Croydon: Preliminary review in preparation of EWG discussion.

[hanickadot]

EWG in Croydon:

EWG wants to solve the CWG-3150 issue for C++26

SF	F	N	A	SA
4	20	14	19	6

Result: not consensus

Encourage more work in direction P4101r0 "consteval-only values for C++26" as a solution to CWG-3150

SF	F	N	A	SA
36	18	4	1	1

Result: strong consensus

Encourage more work in direction P4135r0 "consteval-only types" as a solution to CWG-3150

SF	F	N	A	SA
6	11	31	6	8

Result: not consensus

[RaeASunshine]

The link to the paper leads to a 404

[je4d]

EWG saw this in Brno on Tuesday morning and took the following polls:

Forward D4101R1 "Consteval-only values for C++26" as-is (all meta::info values except the null reflection are consteval-only) to CWG as a Defect Report

SF	F	N	A	SA
8	11	5	1	0

consensus.

Forward D4101R1 "Consteval-only values for C++26" modified to choose option 3 (all meta::info values are consteval-only), to CWG as a Defect Report

SF	F	N	A	SA
2	8	11	2	0


not consensus.