[libcxx-commits] [PATCH] D126462: [libc++] Re-enable std::pair trivial copy constructor for FreeBSD >= 14

[Dimitry Andric via Phabricator via libcxx-commits]

dim created this revision.
dim added reviewers: ldionne, emaste, EricWF.
Herald added subscribers: krytarowski, arichardson.
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dim requested review of this revision.
Herald added a project: libc++.
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After many years of using the really old std::pair ABI which did not yet
have a trivial copy constructor, FreeBSD 14 and later will finally get
rid of it. Only use the old ABI for FreeBSD 13 and earlier.

Note: on the FreeBSD side, we will bump our libc++.so version for this,
and keep an old compatibility library in a separate package.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D126462

Files:
  libcxx/include/__config


Index: libcxx/include/__config
===================================================================
--- libcxx/include/__config
+++ libcxx/include/__config
@@ -127,7 +127,7 @@
 #  endif
 // Feature macros for disabling pre ABI v1 features. All of these options
 // are deprecated.
-#  if defined(__FreeBSD__)
+#  if defined(__FreeBSD__) && __FreeBSD__ < 14
 #    define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR
 #  endif
 #endif


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