ocsigen/lwt — pull request #51 by mfp (2014-04-18 09:53:43+00:00)
Title: Lwt_log: get backtrace early to overcome exns in Printexc.to_string.

If 3rd-party code registers a printer function that raises (and then captures) an exception,
the original backtrace will be overwritten. This happens in particular with `Netexn`.