efriedma added inline comments.
================
Comment at: include/new:174
+_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY
+constexpr _Tp* launder(_Tp* __p) noexcept { return __p;}
+#endif
----------------
How is the compiler supposed to know that "std::__1::launder()" has special
semantics?
https://reviews.llvm.org/D40144
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