erichkeane added a comment.

In D134529#3853036 <https://reviews.llvm.org/D134529#3853036>, @ilya-biryukov 
wrote:

> In D134529#3852990 <https://reviews.llvm.org/D134529#3852990>, @erichkeane 
> wrote:
>
>> Note that @BertalanD  noticed an issue with what I expect to be this patch: 
>> https://godbolt.org/z/Wjb9rsEYG
>>
>> Can someone more knowledgable about this paper please make sure it is an 
>> intended change?  It seems to me that the reversing behavior of the equality 
>> operators is a little awkward here (note that commenting out != makes that 
>> 'work' again).
>
> This is the intended behaviour, yes. The paper aims to revert back to C++17 
> behavior when we see a matching `operator !=` and this was an error in C++17: 
> https://godbolt.org/z/K3cr9MMh5.
> As mentioned above, the actual compiler error message is not very helpful and 
> is something that could be improved, but this was not introduced by this 
> patch.

Thank you very much for clarifying!  I wasn't sure, and didn't want to mislead 
@BertalanD.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D134529/new/

https://reviews.llvm.org/D134529

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