P4189 R0 get()ing the pointer from optional<T&>

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P4189R0 get()ing the pointer from optional<T&> (Nevin Liber)

[inbal2l]

2026-06-10 Library Evolution Brno

P4189R0 get()ing the pointer from optional<T&>

2026-06-10 Minutes

Champion: Nevin Liber
Chair: Fabio Fracassi
Minutes: Elias Kosunen

Summary

POLL: We need to explore names other than .get_ptr.

SF	F	N	A	SA
0	7	7	7	3

Attendance: 28 (IP) + 8 (R)
Author's position: SA
Outcome: no consensus

POLL: Explore adding the same facility to expected in this paper.

SF	F	N	A	SA
2	2	3	8	5

Attendance: 28 (IP) + 8 (R)
Author's position: SA
Outcome: consensus against

POLL: Forward "P4189R0: get()ing the pointer from optional" to LWG for C++29.

SF	F	N	A	SA
10	10	2	1	1

Attendance: 28 (IP) + 8 (R)
Author's position: SF
Outcome: Strong consensus in favour

SA: It effectively removes the hardened precondition on operator-> and doing that for C++29 is unconscionable.
A: Not convinced on the need for optional (good with optional<T&>)

Next Steps

P4189R0 was forwarded to LWG for C++29.