[libcxx-commits] [libcxx] [libcxx] adds a size-based representation for `vector`'s unstable ABI (PR #155330)

[Christopher Di Bella via libcxx-commits]

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@@ -130,15 +146,14 @@ class vector {
   //
   // [vector.cons], construct/copy/destroy
   //
-  _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector()
-      _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) {}
+  _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector() = default;
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cjdb wrote:

Done. Reverting to `{}` since `vector` is never trivially default-constructible, and it'll simplify the diff further.

https://github.com/llvm/llvm-project/pull/155330