[PATCH] D128745: [c++] implements DR692, DR1395 and tentatively DR1432, about partial ordering of variadic template partial specialization or function template

Tue Oct 4 11:20:11 PDT 2022

hubert.reinterpretcast added a comment.

In D128745#3834313 <https://reviews.llvm.org/D128745#3834313>, @ychen wrote:

> I think the consensus is some flag is needed to put it back to legacy behavior just in case.

I am not sure there is strong consensus to add a flag "just in case". Historically, many DRs had effects on overload resolution (via SFINAE or otherwise). Once we start adding flags "just in case", we might end up having a lot of them. These flags can exacerbate fracturing of the ecosystem.

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https://reviews.llvm.org/D128745