lysdexic@programming.devM to C++@programming.devEnglish · 1 年前On harmful overuse of std::move - The Old New Thingdevblogs.microsoft.comexternal-linkmessage-square22fedilinkarrow-up130
arrow-up130external-linkOn harmful overuse of std::move - The Old New Thingdevblogs.microsoft.comlysdexic@programming.devM to C++@programming.devEnglish · 1 年前message-square22fedilink
minus-squarelysdexic@programming.devOPMlinkfedilinkEnglisharrow-up1·1 年前It doesn’t look like it, otherwise you’d be aware that the whole point of this submission is that casting return values with std::move disables RVO.
minus-squareDani (:cxx: modules addict)@hachyderm.iolinkfedilinkarrow-up1·1 年前@lysdexic You claimed otherwise: " These std::move invocations are harmless, as they only cast objects to their rvalue reference. " If you were right, we wouldn’t have the motivation to look at this in EWG.
minus-squarelysdexic@programming.devOPMlinkfedilinkEnglisharrow-up1·1 年前 If you were right, we wouldn’t have the motivation to look at this in EWG. I am right. Not benefiting from RVO does not mean you’re harming anyone. Again, I recommend you read the submission and also the discussion.
It doesn’t look like it, otherwise you’d be aware that the whole point of this submission is that casting return values with
std::movedisables RVO.@lysdexic You claimed otherwise:
"
These std::move invocations are harmless, as they only cast objects to their rvalue reference.
"
If you were right, we wouldn’t have the motivation to look at this in EWG.
I am right. Not benefiting from RVO does not mean you’re harming anyone.
Again, I recommend you read the submission and also the discussion.