[Lldb-commits] [lldb] [lldb/API] Mark SBValue with error as invalid (PR #158759)

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jimingham wrote:

Note, another way to do this would be to have default constructed SBValues have a Failed error state of "Nothing in me now".  Then you could dispense with SBValie.IsValid altogether, since there aren't any SBValues that don't at least have valid error states. 

https://github.com/llvm/llvm-project/pull/158759