llvm-project

419fa1b0 - [lldb][DataFormatter] Surface CalculateNumChildren errors in std::vector summary (#135944)

[lldb][DataFormatter] Surface CalculateNumChildren errors in std::vector summary (#135944) When the data-formatters happen to break (e.g., due to layout changes in libc++), there's no clear indicator of them failing from a user's perspective. E.g., for `std::vector`s we would just show: ``` (std::vector<int>) v = size=0 {} ``` which is highly misleading, especially if `v.size()` returns a non-zero size. This patch surfaces the various errors that could occur when calculating the number of children of a vector. rdar://146964266