[libcxx-commits] [libcxx] [libc++] Add tests for the ABI break introduced by switching to _LIBCPP_COMPRESSED_PAIR (PR #154559)

[Louis Dionne via libcxx-commits]

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@@ -60,31 +62,54 @@ class final_small_iter_allocator final {
   friend bool operator!=(final_small_iter_allocator, final_small_iter_allocator) { return false; }
 };
 
+struct allocator_base {};
+
+template <class T>
+struct common_base_allocator : allocator_base {
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ldionne wrote:

Let's add a link to https://github.com/llvm/llvm-project/issues/154146 here and throughout these tests.

https://github.com/llvm/llvm-project/pull/154559