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

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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.

Differential Revision: https://reviews.llvm.org/D126462
This commit is contained in:
Dimitry Andric
2023-09-07 11:55:33 -04:00
committed by Louis Dionne
parent f72d41b5b1
commit 6255157d24
1 changed files with 1 additions and 1 deletions
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2
libcxx/include/__config
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@@ -164,7 +164,7 @@
# 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
// For XCOFF linkers, we have problems if we see a weak hidden version of a symbol