Re: c++: template operator lookup caching

[Nathan Sidwell <nathan@acm.org>]

On 8/26/20 1:07 PM, Jason Merrill wrote:
> On 8/26/20 12:56 PM, Nathan Sidwell wrote:
>> On 8/26/20 12:06 PM, Jason Merrill wrote:
>>> On 8/26/20 8:30 AM, Nathan Sidwell wrote:
>>>>

>>>> This still retains only recording on lambdas.  As the comment says, we
>>>> could enable for all templates.
>>>
>>> If we're going to need it on all templates for modules, is there a 
>>> reason not to go ahead and make that change now?
>>
>> No reason.
>>
>>> Do we need a different approach for operator lookup in non-function 
>>> template contexts, e.g. data member initializers?
>>
>> Hm, I guess we do.
> 
> Perhaps represent the operation as a CALL_EXPR with 
> CALL_EXPR_OPERATOR_SYNTAX set?

I think that'd work.  To be strictly correct we need it everywhere, 
because (crazy user/testsuite):

template<typename T> void Foo (T t)
{
   { using namespace A;  !t; }
   { using namespace B;  !t; }
}

-- 
Nathan Sidwell