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

From: Aaron Ballman <compatibility.sg.chair_at_[hidden]>
Date: Wed, 26 Jan 2022 10:54:49 -0500
Our next meeting will be on Fri Feb 11, 2022 at 18:00 UTC

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

**NEW PASSWORD: same as the old one, but spelled as a C reserved
identifier instead of a C++ keyword; contact Aaron Ballman if you have
questions **

We will be discussing the following papers:

P1774R5 (https://wg21.link/P1774R5) Portable assumptions
Proposes adding a new attribute (spelled [[assume(...)]]) to give
programmers a portable way to provide information to an optimizing
compiler that an expression is true without the compiler executing the
expression. The author is looking for feedback on whether this
proposal would be of interest to WG14 for inclusion in a revision of C
and, if so, whether any modifications are needed to the existing C++

P2478R0 (https://wg21.link/P2478R0) _Thread_local for better C++
interoperability with C
Continues the discussion about semantic differences between
_Thread_local (C) and thread_local (C++) that was first identified
during discussion of P2310R0 Revise spelling of keywords at the
November 2021 SG22 meeting. The authors wish to report back on the
discussions that happened in WG14 and see if there is SG22 appetite
for C++ changes to improve compatibility in this realm.



Received on 2022-01-26 15:55:03