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

[Serge Pavlov via llvm-commits]

spavloff wrote:

> addr2line isn't the only piece of software that llvm-symbolizer should be compatible with. In its default mode (not the addr2line compatibliity mode), it should also aim to be compatible with older versions of itself. 

Compatibility is an important motivation, if we can maintain it for wider set of cases, we probably should. However if compatibility is your primary concern, the responce to empty string must be empty string, as this is the behavior of older versions. More complex patterns, like sending some non-empty commands don't address your concern, do they?



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