segmentation fault

[larskluge]

I am trying to understand how Flow's join work, but instead I am crashing Elixir w/ a segfault:

flow_a = Flow.from_enumerable(1_000..1_100)
flow_b = Flow.from_enumerable(  500..1_100)

flow = Flow.window_join(:inner, flow_a, flow_b, Flow.Window.global, & &1, & &1, fn a, a -> a end)

assert flow |> Enum.sort |> Enum.take(3) == [1_000, 1_001, 1_002]

Pushed the complete (hopefully reproducible) source here: https://github.com/larskluge/crash

Please advise. Thank you!

[josevalim]

Can you please include your Erlang, Elixir and OS versions? Thanks! -- *José Valim* www.plataformatec.com.br Skype: jv.ptec Founder and Director of R&D

[larskluge]

Sure thing, thanks.

$ elixir -v
Erlang/OTP 22 [erts-10.4.4] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe] [dtrace]

Elixir 1.9.1 (compiled with Erlang/OTP 22)

$ uname -a
Darwin unknown18 18.7.0 Darwin Kernel Version 18.7.0: Thu Jun 20 18:42:21 PDT 2019; root:xnu-4903.270.47~4/RELEASE_X86_64 x86_64

[larskluge]

PS: Posted originally here: https://elixirforum.com/t/need-help-w-a-segmentation-fault-bus-error/24335

And as posted there, it seems to run on Ubuntu 18.04 w/ same Elixir version, but OTP 21.

Also, 2/3 times it works, about 1/3 of my runs crash.

[josevalim]

Reported here, thanks: https://bugs.erlang.org/browse/ERL-1017

[larskluge]

Wow, ok, thank you for taking this on!

…

On Wed 31. Jul 2019 at 20:38 José Valim ***@***.***> wrote: Reported here, thanks: https://bugs.erlang.org/browse/ERL-1017 — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#89>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAA4EYGVGMXE2VN42HZYBLLQCHL2TANCNFSM4IIGNLEA> .

[josevalim]

Closing this as it has been fixed upstream.