[Lldb-commits] [lldb] Change GetNumChildren()/CalculateNumChildren() methods return llvm::Expected (PR #84219)

[Adrian Prantl via lldb-commits]

adrian-prantl wrote:

> I would say this differently.  Many clients of the GetNumChildren API are planning to respond the same way to an error and a number of children == 0.

I haven't done a complete audit, but my expectation for this patch is that the vast majority of users of this API will want to bubble up the error. So I'm seeing this as a transition state, with the goal being to convert all functions that currently use the ValueOr function to also return an Expected.

https://github.com/llvm/llvm-project/pull/84219