Michael Buch a5448ad73b [lldb][DataFormatters] Support newer _LIBCPP_COMPRESSED_PAIR layout (#155153) ...

Starting with https://github.com/llvm/llvm-project/pull/154686 the
compressed_pair children are now wrapped in an anonymous structure.

This patch adjusts the LLDB data-formatters to support that.

Outstanding questions:
1. Should GetChildMemberWithName look through anonymous structures? That
will break users most likely. But maybe introducing a new API is worth
it? Then we wouldnt have to do this awkward passing around of
`anon_struct_index`
2. Do we support the layout without the anonymous structure? It's not
too much added complexity. And we did release that version of libc++, so
there is code out there compiled against it. But there is no great way
of testing it (some of our macOS matrix bots do test it i suppose, but
not in a targeted way). We have the layout "simulator" tests for some of
the STL types which I will adjust.

(cherry picked from commit 20dd053160f7d933037aacb69067ef4d77996ba1)

2025-08-26 11:36:20 +02:00

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support

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test

[lldb][DataFormatters] Support newer _LIBCPP_COMPRESSED_PAIR layout (#155153)

2025-08-26 11:36:20 +02:00

test_event

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__init__.py

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