P1195 Making <system_error> constexpr

[wg21bot]

P1195R0 Making <system_error> constexpr (Peter Dimov)

[jensmaurer]

LEWG-I in Kona

[brycelelbach]

Kona 2019-02 LEWGI Minutes

P1195R0 constexpr <system_error>

Champion: Bryce Adelstein Lelbach

Minute Taker: JeanHeyd Meneide

Start Overview: 14:35

Start Discussion: 14:43

Depends on constexpr virtual functions (P1064).
Depends on constexpr placement new/destructors (P1077R0 or virtual destructors being allowed to be trivial ([[https://wg21.link/P1077R0)).

What happens to people who derive from system_error?

Can you override a constexpr virtual function with a non-constexpr virtual function?
A: We think the answer is yes; you just can’t use it in a constexpr context.

We are interested in constexpr <system_error> constructors, but we seem to have those already.

Start Polling:

POLL: Given the motivation we’ve been presented and what we know now, we should promise more committee time to making <system_error> constexpr, knowing that our time is scarce and this will leave less time for other work.

Strongly For	Weakly For	Neutral	Weakly Against	Strongly Against
0	2	4	2	0

Attendance: 12

End: 14:52

CONSENSUS: Bring a revision of P1195R0, with more explaination of the motivations, to LEWGI for further direction review.

[brycelelbach]

No action since 2018. Closing.