[Patch] Implementation of n3793 <experimental/optional>

[Luc Danton]

On 2013-11-03 12:19, Jonathan Wakely wrote:
> On 3 November 2013 09:49, Andreas Schwab wrote:
>> Jonathan Wakely <jwakely.gcc@gmail.com> writes:
>>
>>> +  {
>>> +    std::experimental::optional<long> o { std::experimental::in_place, 0x1234ABCDF1E2D3C4 };
>>> +    auto copy = o;
>>> +    VERIFY( copy );
>>> +    VERIFY( *copy == 0x1234ABCDF1E2D3C4 );
>>> +    VERIFY( o && o == 0x1234ABCDF1E2D3C4 );
>>> +  }
>> experimental/optional/cons/copy.cc:70:20: error: no match for 'operator==' (operand types are 'std::experimental::optional<long int>' and 'long long int')
>>       VERIFY( o && o == 0x1234ABCDF1E2D3C4 );
>>                      ^
> Yes, Paolo pointed out these are failing on 32-bit targets, I've got a
> patch coming.  Luc is there any reason not to just replace all those
> large constants with 0x1234ABCD, which fits in a long on 32-bit
> targets?

The value is arbitrary, it's fine to proceed.