[PATCH] D135341: [clang] adds `__reference_constructs_from_temporary`

[Roy Jacobson via Phabricator via cfe-commits]

royjacobson added inline comments.


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Comment at: clang/docs/LanguageExtensions.rst:1476
   is false. Note this trait will also return false when the initialization of
   ``T`` from ``U`` is ill-formed.
+* ``__reference_constructs_from_temporary(T, U)`` (C++)
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royjacobson wrote:
> We should deprecate this, as `__reference_constructs_from_temporary` is implemented now. There's a list of deprecated builtins in SemaExprCXX.cpp:DiagnoseBuiltinDeprecation so I think it should be pretty easy to add a warning for users that this is a non-standard attribute.
Though for the CI's sake maybe it's better to wait until after libcxx stop using it.


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  https://reviews.llvm.org/D135341/new/

https://reviews.llvm.org/D135341