[libcxx-commits] [libcxx] [lldb] [libcxx] adds size-based `__split_buffer` representation to unstable ABI (PR #139632)

[Christopher Di Bella via libcxx-commits]

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@@ -78,23 +80,232 @@ public:
                       __split_buffer,
                       void>;
 
-  pointer __first_;
-  pointer __begin_;
-  pointer __end_;
-  _LIBCPP_COMPRESSED_PAIR(pointer, __cap_, allocator_type, __alloc_);
+  struct __data {
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cjdb wrote:

I decided to keep it as a member of `__split_buffer` to simplify the implementation, but defined it outside so that it resembled the spirit of this request. I was also able to put `invariants()` back into `__split_buffer::__invariants()`.

https://github.com/llvm/llvm-project/pull/139632