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

[Michael Buch via libcxx-commits]

================

----------------
Michael137 wrote:

For std::vector this patch didn't actually change anything about the vector layout. It just changed some accesses in __swap_out_circular_buffer/insert/emplace. LLDB formatters don't rely on those functions. They most rely on the data members, which stayed the same.

For std::deque, it has a __split_buffer child, so it's layout did change and hence the formatter broke.

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