C++ Logo


Advanced search

Re: [SG16] P1885 polling

From: Hubert Tong <hubert.reinterpretcast_at_[hidden]>
Date: Wed, 22 Sep 2021 23:16:19 -0400
On Wed, Sep 22, 2021 at 5:33 PM Tom Honermann via SG16 <
sg16_at_[hidden]> wrote:

> On 9/22/21 5:18 PM, Corentin via SG16 wrote:
> Hello,
> I forgot to mention that Bryce asked on the reflector whether we want to
> forward P1885 to electronic polling
> https://lists.isocpp.org/lib-ext/2021/09/20049.php
> Hubert had some great feedback, which I hope to have addressed
> https://isocpp.org/files/papers/D1885R8.pdf
> I'd like to see this paper forwarded, I would love it if either you could
> indicate your support or let me know how I could increase consensus.
> I assume by forwarded, you mean forwarded from LEWG to electronic polling.
> I'm not aware of anything that would change the SG16 consensus for it, but
> I haven't caught up on the recent discussions on the LEWG mailing list yet
> either. I'll get caught up and follow up as necessary.
I think there have been a few surprises:
Under the author's preferred interpretation of the charsets represented by
the IANA Character Set Registry, few of the registered encodings are wide
encodings. The wording is designed towards high implementation freedom, so
I am not sure how much of the author's intent is going to be apparent to
implementers (especially if individuals not directly participating in the
threads of discussion happen to be the people who end up doing the

Also, (this is new information to me and I expect to most people as well)
the paper's prose points to GCC's -fwide-exec-charset option, which really
only works if the option specifies a correctly-sized wide encoding that
iconv recognizes.

$ gcc -fwide-exec-charset=ISO8859-1 -fsyntax-only -xc++ -<<<$'extern char
x[L\'0\'], x[0x30];'
<stdin>:1:28: error: conflicting declaration 'char x [48]'
<stdin>:1:13: note: previous declaration as 'char x [805306368]'

So, insofar as the example in the prose is concerned, there would need to
be an iconv name for the appropriately-sized wide EBCDIC encoding.

> Tom.
> Thanks :)
> Have a great day, corentin
> PS: I also forgot to mention that Jens's paper (p2314) will be in plenary
> in october!
> --
> SG16 mailing list
> SG16_at_[hidden]
> https://lists.isocpp.org/mailman/listinfo.cgi/sg16

Received on 2021-09-22 22:16:49