Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c > #61669

Re: Implementing static_assert

From David Brown <david.brown@hesbynett.no>
Newsgroups comp.lang.c
Subject Re: Implementing static_assert
Date 2015-05-07 09:44 +0200
Organization A noiseless patient Spider
Message-ID <mif520$8o7$1@dont-email.me> (permalink)
References <midqsq$81d$1@dont-email.me> <876185lach.fsf@kst-u.example.com> <midv1j$pin$1@dont-email.me> <871titl7h9.fsf@kst-u.example.com> <mie6p1$p1l$1@dont-email.me>

Show all headers | View raw

On 07/05/15 01:07, Martin Shobe wrote:
> On 5/6/2015 4:30 PM, Keith Thompson wrote:
>> jacobnavia <jacob@jacob.remcomp.fr> writes:

>> I think C11 may have borrowed static_assert from C++, with a change from
>> `static_assert` to `_Static_assert` to avoid breaking existing code.

C++ introduced static_assert in C++11, so the two languages got the
feature at roughly the same time, rather than one copying directly from
the other.

>> One difference is that in C++ the message is optional.
> 
> The message is not optional. N3797 says
> 
> Otherwise, the program is ill-formed, and the resulting diagnostic
> message (1.4) shall include the text of the string-literal, except that
> characters not in the basic source character set (2.3) are not required
> to appear in the diagnostic message.
> 

IIRC the message will be optional in C++17, according to current plan.

Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Implementing static_assert jacobnavia <jacob@jacob.remcomp.fr> - 2015-05-06 21:44 +0200
  Re: Implementing static_assert Keith Thompson <kst-u@mib.org> - 2015-05-06 13:28 -0700
    Re: Implementing static_assert jacobnavia <jacob@jacob.remcomp.fr> - 2015-05-06 22:55 +0200
      Re: Implementing static_assert Keith Thompson <kst-u@mib.org> - 2015-05-06 14:30 -0700
        Re: Implementing static_assert Martin Shobe <martin.shobe@yahoo.com> - 2015-05-06 18:07 -0500
          Re: Implementing static_assert Keith Thompson <kst-u@mib.org> - 2015-05-06 17:34 -0700
          Re: Implementing static_assert David Brown <david.brown@hesbynett.no> - 2015-05-07 09:44 +0200
      Re: Implementing static_assert Tim Rentsch <txr@alumni.caltech.edu> - 2015-05-07 12:37 -0700
  Re: Implementing static_assert David Brown <david.brown@hesbynett.no> - 2015-05-07 10:11 +0200
    Re: Implementing static_assert Ian Collins <ian-news@hotmail.com> - 2015-05-07 22:13 +1200
      Re: Implementing static_assert jacobnavia <jacob@jacob.remcomp.fr> - 2015-05-07 12:24 +0200
        Re: Implementing static_assert Ian Collins <ian-news@hotmail.com> - 2015-05-07 22:33 +1200
          Re: Implementing static_assert David Brown <david.brown@hesbynett.no> - 2015-05-07 14:30 +0200
    Re: Implementing static_assert Philip Lantz <prl@canterey.us> - 2015-05-07 03:53 -0700
      Re: Implementing static_assert David Brown <david.brown@hesbynett.no> - 2015-05-07 14:21 +0200
        Re: Implementing static_assert Keith Thompson <kst-u@mib.org> - 2015-05-07 09:11 -0700
          Re: Implementing static_assert James Kuyper <jameskuyper@verizon.net> - 2015-05-07 12:30 -0400
            Re: Implementing static_assert James Kuyper <jameskuyper@verizon.net> - 2015-05-07 12:55 -0400
    Re: Implementing static_assert Keith Thompson <kst-u@mib.org> - 2015-05-07 09:06 -0700
  Re: Implementing static_assert jacobnavia <jacob@jacob.remcomp.fr> - 2015-05-07 19:43 +0200
    Re: Implementing static_assert Tim Rentsch <txr@alumni.caltech.edu> - 2015-05-07 16:10 -0700

csiph-web