[llvm] [Dexter] Temporarily print DAP logs on specific exception (PR #157130)

[Orlando Cazalet-Hyams via llvm-commits]

OCHyams wrote:

Ah. @SLTozer raised the very valid point that this may not actually show up in lit output. And annoyingly it doesn't. Will try #157145 instead.

https://github.com/llvm/llvm-project/pull/157130