Re: N3242 8.5.1/15 -- braced union declarations limited only to first member

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From	James Kuyper <jameskuyper@verizon.net>
Subject	Re: N3242 8.5.1/15 -- braced union declarations limited only to first member
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On 09/17/2014 09:29 PM, Philip Guenther wrote:
>
> On Tuesday, September 16, 2014 7:10:03 PM UTC-7, Rick C. Hodgin wrote:
>> On Saturday, August 30, 2014 2:30:01 PM UTC-4, Rick C. Hodgin wrote:
>>> Taken from:
>>> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf
>>>
>>> ----------
>>> 8.5.1 / 15 When a union is initialized with a brace-enclosed initializer,
>>> the braces shall only contain an initializer-clause for the first non-
>>> static data member of the union.
>>>
>>> [ Example:
>>> union u { int a; const char* b; };
>>> u a = { 1 };
>>> u b = a;
>>> u c = 1; // error
>>> u d = { 0, "asdf" }; // error
>>> u e = { "asdf" }; // error
>>> --end example ]
>>> ----------
>>
>>
>> If no one objects, I propose this limitation be removed and replaced
>> with an allowance for compile-time initializer clauses to any union
>> member.
>
> Don't C99 designated initializers solve this problem?

They would, and changing C++ to support them would be a better approach
than the one suggested above.
--
James Kuyper


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N3242 8.5.1/15 -- braced union declarations limited only to first member rick.c.hodgin@googlemail.com - 2014-08-30 13:29 -0600
  Re: N3242 8.5.1/15 -- braced union declarations limited only to first member "Rick C. Hodgin" <rick.c.hodgin@googlemail.com> - 2014-09-16 21:01 -0600
    Re: N3242 8.5.1/15 -- braced union declarations limited only to first member Philip Guenther <guenther@googlemail.com> - 2014-09-17 19:29 -0600
      Re: N3242 8.5.1/15 -- braced union declarations limited only to first member "Rick C. Hodgin" <rick.c.hodgin@googlemail.com> - 2014-09-19 01:06 -0600
        Re: N3242 8.5.1/15 -- braced union declarations limited only to first member "Rick C. Hodgin" <rick.c.hodgin@googlemail.com> - 2014-09-20 01:37 -0600
          Re: N3242 8.5.1/15 -- braced union declarations limited only to first member Martin Bonner <martinfrompi@yahoo.co.uk> - 2014-09-23 14:52 -0600
            Re: N3242 8.5.1/15 -- braced union declarations limited only to first member "Rick C. Hodgin" <rick.c.hodgin@googlemail.com> - 2014-09-24 16:30 -0600
      Re: N3242 8.5.1/15 -- braced union declarations limited only to first  member James Kuyper <jameskuyper@verizon.net> - 2014-09-19 01:06 -0600
      Re: N3242 8.5.1/15 -- braced union declarations limited only to first member Francis Glassborow <Francis.glassborow@btinternet.com> - 2014-09-19 01:06 -0600

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