scvim stopped working

[kflak]

Getting strange behavior from scvim. It's been working well so far, but now it fails completely. I can run my patches from scide and sclang on the command line, but trying to run it from nvim (and vim) fails. Output from journalctl -xe (excerpt) is this:

Aug 29 20:47:07 arch systemd-coredump[10894]: Process 10841 (nvim) of user 1000 dumped core.

                                              Stack trace of thread 10846:
                                              #0  0x00007f3188ba6d7f raise (libc.so.6)
                                              #1  0x00007f3188b91672 abort (libc.so.6)
                                              #2  0x00007f3189e20075 n/a (libuv.so.1)
                                              #3  0x00007f3189e2df7c n/a (libuv.so.1)
                                              #4  0x00007f3189e2f0e6 uv_signal_stop (libuv.so.1)
                                              #5  0x0000555af00532c0 n/a (nvim)
                                              #6  0x00007f3189dfda9d start_thread (libpthread.so.0)
                                              #7  0x00007f3188c6aa43 __clone (libc.so.6)

                                              Stack trace of thread 10841:
                                              #0  0x00007f3188858e9b ~system_error_category (libstdc++.so.6)
                                              #1  0x00007f3188ba9997 __cxa_finalize (libc.so.6)
                                              #2  0x00007f3188829b38 __do_global_dtors_aux (libstdc++.so.6)
                                              #3  0x00007f3189e9c8de _dl_fini (ld-linux-x86-64.so.2)
                                              #4  0x00007f3188ba945c __run_exit_handlers (libc.so.6)
                                              #5  0x00007f3188ba958e exit (libc.so.6)
                                              #6  0x0000555aeff8b5e6 preserve_exit (nvim)
                                              #7  0x0000555aeffc58c2 n/a (nvim)
                                              #8  0x0000555aefefbfc9 multiqueue_process_events (nvim)
                                              #9  0x0000555aefefb699 loop_poll_events (nvim)
                                              #10 0x0000555af005780e n/a (nvim)
                                              #11 0x0000555af005484b ui_builtin_stop (nvim)
                                              #12 0x0000555aeffc61b3 mch_exit (nvim)
                                              #13 0x0000555aeff6bd1f getout (nvim)
                                              #14 0x0000555aeff8b679 preserve_exit (nvim)
                                              #15 0x0000555aeffc58c2 n/a (nvim)
                                              #16 0x0000555aefefbfc9 multiqueue_process_events (nvim)
                                              #17 0x0000555aefefb699 loop_poll_events (nvim)
                                              #18 0x0000555aefefcc3d process_wait (nvim)
                                              #19 0x0000555aeffc4b20 n/a (nvim)
                                              #20 0x0000555aeffc57e1 os_system (nvim)
                                              #21 0x0000555aefed5b9f n/a (nvim)
                                              #22 0x0000555aefedd7a3 call_func (nvim)
                                              #23 0x0000555aefee1dd2 n/a (nvim)
                                              #24 0x0000555aefee6862 ex_call (nvim)
                                              #25 0x0000555aeff1df9b do_cmdline (nvim)
                                              #26 0x0000555aefedcbfd call_user_func (nvim)
                                              #27 0x0000555aefedd590 call_func (nvim)
                                              #28 0x0000555aefee1dd2 n/a (nvim)
                                              #29 0x0000555aefee6862 ex_call (nvim)
                                              #30 0x0000555aeff1df9b do_cmdline (nvim)
                                              #31 0x0000555aefedcbfd call_user_func (nvim)
                                              #32 0x0000555aefedd590 call_func (nvim)
                                              #33 0x0000555aefee1dd2 n/a (nvim)
                                              #34 0x0000555aefee6862 ex_call (nvim)
                                              #35 0x0000555aeff1df9b do_cmdline (nvim)
                                              #36 0x0000555aeff3c3d8 n/a (nvim)
                                              #37 0x0000555aeff3d137 apply_autocmds (nvim)
                                              #38 0x0000555aeff6be03 getout (nvim)
                                              #39 0x0000555aeff0254e do_wqall (nvim)
                                              #40 0x0000555aeff1df9b do_cmdline (nvim)
                                              #41 0x0000555aeff9a208 n/a (nvim)
                                              #42 0x0000555aeffa3377 n/a (nvim)
                                              #43 0x0000555af0035c10 state_enter (nvim)
                                              #44 0x0000555aeff9a78a normal_enter (nvim)
                                              #45 0x0000555aefe795aa main (nvim)
                                              #46 0x00007f3188b93223 __libc_start_main (libc.so.6)
                                              #47 0x0000555aefe7a56a _start (nvim)
-- Subject: Process 10841 (nvim) dumped core
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- Documentation: man:core(5)
-- 
-- Process 10841 (nvim) crashed and dumped core.
-- 
-- This usually indicates a programming error in the crashing program and
-- should be reported to its vendor as a bug.

Running this on Arch linux 4.14.59-rt37-1-rt-lts

Any thoughts are much appreciated! Reboot usually solves it for a little while.

[kflak]

Additional info: seems the issue may be related to MIDI in some weird way. Before this I have been having a hard time connecting external MIDI devices using MIDIIn.connectAll. I've had to make several attempts at connecting before succeeding, which is not the case when connecting via scide or sclang directly.

[dvzrv]

yeah, MIDI can be flaky sadly. Maybe run something like patchage meanwhile to see what's happening to the JACK graph.

Also: Can you reproduce the crash using vim? -- https://sleepmap.de

[kflak]

Of course, after the latest reboot I can't manage to crash the thing even if I try hard ;-) Previously, though, vimi has also been affected. Once the crash has happened I haven't been able to launch sc through vim either. More details: :SClangStart causes a terminal window to pop up and immediately disappear, much in the same way as if I am already running an instance of sclang. After this I can't quit vim in the usual way (:qwa in this case), and I need to reboot to be able to do anything scvim-related. Is some environment variable or lockfile or something like that being set that I could clean out manually after a crash?

[dvzrv]

There will be a pid and pipe created in your /tmp (or $XDG_RUNTIME_DIR):

-rw-r--r--  1 dave dave    6 Sep 29 12:04 sclangpipe_app-pid
prw-r--r--  1 dave dave    0 Sep 29 12:04 sclang-pipe

Have you tried using :SClangstart in vim when inside screen/tmux?

[kflak]

Hi,

Still haven't experienced this problem since I filed the issue, except for yesterday when I accidentally deleted ruby from my system. Reinstalling it fixed the issue... Other than that I have no idea what can cause this. I will let you know if it happens again!