This patch, by hamzasood, implements P0409R2, and allows [=, this] pre-C++2a as an extension (with appropriate warnings) for consistency.

https://reviews.llvm.org/D36572

Thanks Hamza!





git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@311224 91177308-0d34-0410-b5e6-96231b3b80d8