Robert C. SeacordWG14 N 2836 Identifier Syntax using Unicode Standard Annex 31 was recently adopted into C23 by the C Standards Committee.
The adoption of this this paper solved some problems with C identifiers and helped maintain compatibility with C++ and other languages that had already adopted UAX 31. Unfortunately, we also introduced some new problems which are now addressed by the draft paper attached below. Please have a look and let me know what you think.
I was recently horrified to learn that there is no real consensus about what the terms “overflow” and “wraparound” mean in the C Standard, in particular, if unsigned integers were capable of overflow. I wrote the attached paper to clarify the use of these terms. Please let me know if you have any comments, as I need to submit this paper soon.
The Print Book and Ebook are now available from:
And other fine establishments.
I’ve been collaborating with several members of the C Standards Committee and other experts to propose a defer mechanism for C2x. Our initial proposal (which can be downloaded below) presents five design questions that will influence the final proposal. Let me know if you have any opinions below or on Twitter (follow me @RCS).
