Exceptions dropped in multithreaded code

[samuelpowell]

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julia> Threads.@threads for i = 1:Threads.nthreads()
           undefined
       end

julia> 

Is this a consequence of #17388, or another problem?

[kpamnany]

Exceptions in threads are silently dropped right now. This is known and will be addressed, hopefully in the next major update to threading.

[samuelpowell]

Thanks @kpamnany. I could not find an associated issue so I'll leave this open, but please close if I've overlooked something.

[Keno]

Can we just put a jl_static_show or something in there to at least get some indication that things broke?

[Keno]

cc @JeffBezanson