[llvm] [symbolizer] Empty string is not an error (PR #92660)

[David Blaikie via llvm-commits]

dwblaikie wrote:

Honestly, I'm still super unclear why checking a symbolizer process is "alive" is a use case we need/want to support?

Can you talk more about this @pcc ? Is this a problem that comes up frequently/is worth the improved ergonomics compared to the failure mode in the absence of this functionality? How/where/why does this come up so often it's worthwhile?

https://github.com/llvm/llvm-project/pull/92660