[libcxx-commits] [libcxx] [libc++] Fix ABI break introduced by switching to _LIBCPP_COMPRESSED_PAIR (PR #154686)

[Louis Dionne via libcxx-commits]

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@@ -80,21 +80,44 @@ class __compressed_pair_padding {
 template <class _ToPad>
 class __compressed_pair_padding<_ToPad, true> {};
 
-#  define _LIBCPP_COMPRESSED_PAIR(T1, Initializer1, T2, Initializer2)                                                  \
-    _LIBCPP_NO_UNIQUE_ADDRESS __attribute__((__aligned__(::std::__compressed_pair_alignment<T2>))) T1 Initializer1;    \
-    _LIBCPP_NO_UNIQUE_ADDRESS ::std::__compressed_pair_padding<T1> _LIBCPP_CONCAT3(__padding1_, __LINE__, _);          \
-    _LIBCPP_NO_UNIQUE_ADDRESS T2 Initializer2;                                                                         \
-    _LIBCPP_NO_UNIQUE_ADDRESS ::std::__compressed_pair_padding<T2> _LIBCPP_CONCAT3(__padding2_, __LINE__, _)
-
-#  define _LIBCPP_COMPRESSED_TRIPLE(T1, Initializer1, T2, Initializer2, T3, Initializer3)                              \
-    _LIBCPP_NO_UNIQUE_ADDRESS                                                                                          \
-    __attribute__((__aligned__(::std::__compressed_pair_alignment<T2>),                                                \
-                   __aligned__(::std::__compressed_pair_alignment<T3>))) T1 Initializer1;                              \
-    _LIBCPP_NO_UNIQUE_ADDRESS ::std::__compressed_pair_padding<T1> _LIBCPP_CONCAT3(__padding1_, __LINE__, _);          \
-    _LIBCPP_NO_UNIQUE_ADDRESS T2 Initializer2;                                                                         \
-    _LIBCPP_NO_UNIQUE_ADDRESS ::std::__compressed_pair_padding<T2> _LIBCPP_CONCAT3(__padding2_, __LINE__, _);          \
-    _LIBCPP_NO_UNIQUE_ADDRESS T3 Initializer3;                                                                         \
-    _LIBCPP_NO_UNIQUE_ADDRESS ::std::__compressed_pair_padding<T3> _LIBCPP_CONCAT3(__padding3_, __LINE__, _)
+#  ifdef _LIBCPP_COMPILER_GCC
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ldionne wrote:

Please add a link to the bug report here.

https://github.com/llvm/llvm-project/pull/154686