[cfe-dev] Spurious -Wunused-comparison

[Samuel Williams]

Hi Csaba, a good question,

it is for unit testing syntax similar to rspec, e.g.

expect(value).to_be == some_other_value

Internally, the comparison is done and if it isn't valid, the unit test 
is marked as failed. The same with other operators and function calls.

Kind regards,
Samuel

On 14/07/14 03:35, Csaba Raduly wrote:
> Hi Samuel,
>
> On Sat, Jul 12, 2014 at 7:34 AM, Samuel Williams  wrote:
>> Hi.
>>
>> I'm implementing
>>
>> class Foo {
>>      void operator==(...) {}
>> }
>>
>> for a DSL and getting errors:
>>
>> warning: equality comparison result unused [-Wunused-comparison]
>>
>> I feel this error is not appropriate in such circumstances?
> What's the point of implementing operator== (equality comparison!) if
> you can't get the result?
>
> The return type of operator== should be bool.
>
> Csaba