b3d130279f
This patch replaces the use of `UINT32_MAX` as the error return value of `GetIndexOfChildWithName` with `llvm::Expected`. # Tasks to do in another PR 1. Replace `CalculateNumChildrenIgnoringErrors` with `CalculateNumChildren`. See [this comment](https://github.com/llvm/llvm-project/pull/136693#discussion_r2056319358). 2. Update `lldb_private::formatters::ExtractIndexFromString` to use `llvm::Expected`. See [this comment](https://github.com/llvm/llvm-project/pull/136693#discussion_r2054217536). 3. Create a new class which carries both user and internal errors. See [this comment](https://github.com/llvm/llvm-project/pull/136693#discussion_r2056439608).