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[wg14/wg21 liaison] C and C++ Compatibility Aug Agenda

From: Aaron Ballman <compatibility.sg.chair_at_[hidden]>
Date: Tue, 9 Aug 2022 11:00:33 -0400
Our next meeting will be on Mon Aug 15, 2022 at 15:00 UTC

You can join the meeting at https://iso.zoom.us/j/5513145100

P1854R3 (https://wg21.link/p1854r3) Conversion to execution encoding
should not lead to loss of meaning
Proposes to make non-encodable values in character and string literals
ill-formed (a constraint violation, in C parlance). The author is
looking for feedback on whether WG14 would be likely to want to see a
similar proposal, as well as feedback on whether the approach in the
paper is tractable for shared headers.

P2320R0 (https://wg21.link/p2620r0) Lifting artificial restrictions on
unviversal character names
Proposes to relax a restriction that a universal character name cannot
be used in place of a character in the basic character set, which is a
restriction that C has but C++ does not. The author is looking for
feedback on any concerns people have with unifying the behavior in
both languages to match the C++ behavior.

P2621R0 (https://wg21.link/p2621r0) UB? In my lexer?
Proposes to change a semantic restriction on line splicing which forms
a universal character name, which is currently undefined behavior. The
paper proposes to either define that behavior or make it ill-formed,
because the notion of undefined compile-time behavior is unclear to
users and does not appear to provide any benefit for implementation
extensions in this case.

Received on 2022-08-09 15:00:47