[libcxx-commits] [libcxx] [libc++][ranges][abi-break] Fix `movable_box` overwriting memory of data that lives in the tail padding (PR #71314)

[Louis Dionne via libcxx-commits]

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@@ -8,49 +8,73 @@
 
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ldionne wrote:

I might suggest keeping the old test around, but renaming it to something like `empty_object.pass.cpp`, since it seems to have been written specifically to test something about empty objects. I don't remember why I wrote it that way anymore, and https://reviews.llvm.org/D102135 is not responsive right now but I suspect there might be a rationale.

I would also rename copyable-box to movable-box as a drive-by in that test file, since it was forgotten when we renamed the type.

https://github.com/llvm/llvm-project/pull/71314