Exceptions lead to segfault or stalled repl

[1st1]

Here's one example:

I found that repl can hang or segfaul when processing exceptions from the server. The problem is that this is very intermittent and non-consistent.

[tailhook]

Well, works fine for me:

The only issue is extra brace at the start which I've just fixed now.

[tailhook]

If only you and @ambv have this issue. This is probably something OSX specific :( Can you run gdb and show the stack trace? I may only guess that backtrace-capturing library has some issue on OSX. We can try to make backtraces optional as a workaround.

[ambv]

I'll look into giving you a system stack trace. Apple is a clang shop so we'll see if it will be through gdb or lldb.

[1st1]

I can't repro this now.

[tailhook]

It could be this one: rust-lang/rust#71397
Let's close it for now as we don't have anything actionable here now.