[Bug 1721280] Re: vim.gtk3 crashed with SIGSEGV in __new_sem_wait_fast()

[Török Edwin]

I got a similar crash with some other python3 plugins.
To reproduce move your .vim and .vimrc out of the way and then:
$ mkdir -p .vim/pack/bug/start
$ cd .vim/pack/bug/start
$ (git clone https://github.com/Shougo/deoplete.nvim.git && cd deoplete.nvim && git checkout e9e45ebcf7757ca7d32003cb54a0e31bf2afadb8)
$ (git clone https://github.com/roxma/nvim-yarp.git && cd nvim-yarp.nvim && git checkout edb260a)
$ (git clone https://github.com/roxma/vim-hug-neovim-rpc.git && cd vim-hug-neovim-rpc && git checkout 0b8e70f)
$ cd
$ echo 'let g:deoplete#enable_at_startup=1' >.vimrc
$ touch x
$ vim x
Press :q
Repeat a few (sometimes it crashes everytime, sometimes repeat 10-20 times to get a crash), eventually it crashes with SEGV on exit

Run under valgrind, see valgrind.log, that reproduces the problem always:
$ valgrind --log-file=valgrind.log vim x
:q

** Attachment added: "valgrind.log"
   https://bugs.launchpad.net/ubuntu/+source/vim/+bug/1721280/+attachment/5017526/+files/valgrind.log

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https://bugs.launchpad.net/bugs/1721280

Title:
  vim.gtk3 crashed with SIGSEGV in __new_sem_wait_fast()

Status in vim package in Ubuntu:
  New

Bug description:
  Might be related to one of my extensions

  camelcasemotion  lightline.vim  vim-fetch
  inori            rust.vim       validator.vim  vim-fugitive

  
  Please also double check that it's not a duplicate of #96263 "vim crashed with sigsegv"

  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: vim-gtk3 2:8.0.0197-4ubuntu5
  ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
  Uname: Linux 4.13.0-12-generic x86_64
  ApportVersion: 2.20.7-0ubuntu2
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Wed Oct  4 16:13:33 2017
  ExecutablePath: /usr/bin/vim.gtk3
  InstallationDate: Installed on 2017-05-30 (127 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
  JournalErrors:
   Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
         Users in the 'systemd-journal' group can see all messages. Pass -q to
         turn off this notice.
   No journal files were opened due to insufficient permissions.
  ProcCmdline: vim update_test_projects.sh
  Signal: 11
  SourcePackage: vim
  StacktraceTop:
   kill () at ../sysdeps/unix/syscall-template.S:84
   mch_exit ()
   getout ()
   <signal handler called> () at /lib/x86_64-linux-gnu/libpthread.so.0
   __new_sem_wait_fast (definitive_result=0, sem=0x0) at sem_waitcommon.c:135
  Title: vim.gtk3 crashed with SIGSEGV in kill()
  UpgradeStatus: Upgraded to artful on 2017-09-25 (8 days ago)
  UserGroups: dialout plugdev sudo wireshark

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