[PATCH] D48292: use modern type trait implementations when available

[Richard Smith - zygoloid via Phabricator via cfe-commits]

rsmith marked an inline comment as done.
rsmith added inline comments.


================
Comment at: include/type_traits:3683
+
+#elif __has_feature(has_trivial_destructor) || (_GNUC_VER >= 403)
+
----------------
EricWF wrote:
> rsmith wrote:
> > EricWF wrote:
> > > We don't support anything before GCC 4.9, so you can replace the GCC guard with `|| defined(_LIBCPP_COMPILER_GCC)`
> > Nice. I'll do this more broadly as a separate patch, if that's OK with you. There's lots of support for older GCCs scattered around in this file and elsewhere.
> That sounds good to me.
> 
> I'm happy to take over the cleanup if you want.
https://reviews.llvm.org/D61107 for that :)


Repository:
  rCXX libc++

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https://reviews.llvm.org/D48292