Crash Lua console with manjaro linux

[Ash123495]

I just installed bizhawk on my manjaro linux system. I opened it over command line and when I tried opening the Lua console there is a null pointer error and the program crashes.

I have tried version 2.9.1

Repro Install Bizhawk (linux) open lua console --> crash

Output

System.NullReferenceException: Object reference not set to an instance of an object
  at BizHawk.Client.EmuHawk.LuaConsole.AskSaveChanges () [0x00006] in <828628a610e44fa287bdfc7090f08a57>:0 
  at BizHawk.Client.EmuHawk.ToolManager+<>c.<AskSave>b__44_0 (BizHawk.Client.Common.IToolForm tool) [0x00000] in <828628a610e44fa287bdfc7090f08a57>:0 
  at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].MoveNext () [0x00059] in <6427664c493440c7b5c1ccedf481c620>:0 
  at System.Linq.Enumerable.All[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x00048] in <6427664c493440c7b5c1ccedf481c620>:0 
  at BizHawk.Client.EmuHawk.ToolManager.AskSave () [0x00039] in <828628a610e44fa287bdfc7090f08a57>:0 
  at BizHawk.Client.EmuHawk.MainForm.<.ctor>b__6_9 (System.Object o, System.ComponentModel.CancelEventArgs e) [0x00000] in <828628a610e44fa287bdfc7090f08a57>:0 
  at System.Windows.Forms.Form.OnClosing (System.ComponentModel.CancelEventArgs e) [0x0001c] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at System.Windows.Forms.Form.FireClosingEvents (System.Windows.Forms.CloseReason reason, System.Boolean cancel) [0x00007] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at (wrapper remoting-invoke-with-check) System.Windows.Forms.Form.FireClosingEvents(System.Windows.Forms.CloseReason,bool)
  at System.Windows.Forms.Application.Exit (System.ComponentModel.CancelEventArgs e) [0x00035] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at System.Windows.Forms.Application.Exit () [0x00005] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at System.Windows.Forms.Application.OnThreadException (System.Exception t) [0x0006e] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at System.Windows.Forms.NativeWindow.OnThreadException (System.Exception e) [0x00000] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at System.Windows.Forms.NativeWindow.WndProc (System.IntPtr hWnd, System.Windows.Forms.Msg msg, System.IntPtr wParam, System.IntPtr lParam) [0x001d7] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at System.Windows.Forms.XplatUIX11.DispatchMessage (System.Windows.Forms.MSG& msg) [0x00000] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at System.Windows.Forms.XplatUIX11.DoEvents () [0x00080] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at System.Windows.Forms.XplatUI.DoEvents () [0x00000] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at System.Windows.Forms.Application.DoEvents () [0x00000] in <932a27a365f94d128b5f0bdb01499e2b>:0 
  at BizHawk.Client.EmuHawk.MainForm.CheckMessages () [0x00000] in <828628a610e44fa287bdfc7090f08a57>:0 
  at BizHawk.Client.EmuHawk.MainForm.ProgramRunLoop () [0x001e4] in <828628a610e44fa287bdfc7090f08a57>:0 
  at (wrapper remoting-invoke-with-check) BizHawk.Client.EmuHawk.MainForm.ProgramRunLoop()
  at BizHawk.Client.EmuHawk.Program.SubMain (System.String[] args) [0x0038c] in <828628a610e44fa287bdfc7090f08a57>:0 

Host env. BizHawk 2.9.1: manjaro Linux

[Morilli]

Do you have lua 5.4 installed on your system?

[Ash123495]

Yes, 5.4.6

[YoshiRulz]

Possibly related to #3712 (outdated Mono).

[Ash123495]

I already read that, but it's not my case. I can't open the lua console because the emulator crash.

[CasualPokePlayer]

~~"I can't open the lua console because the emulator crash" would be exactly what 3712 is. An outdated Mono can in fact cause the emulator to crash when opening Lua.~~ No it wouldn't, probably, not sure what I was thinking.

Please list the following: ~~The version of Mono you have installed (mono --version).~~ What lua .so's are available (ldconfig -p | grep lua).

[mDuo13]

I have the same problem (on Arch Linux): the emu runs, but opening the lua console causes a crash with the same error as above (memory locations different, but, otherwise identical). Which also appears to be the same error as #3678 although I'm not sure if that's specifically a Fedora issue.

I'm on the latest mono and I have lua 5.4 available. I'm on BizHawk 2.8 (installed via the aur package—which, btw, didn't work right until I changed the owner of the files to myself)

$ mono --version
Mono JIT compiler version 6.12.0 (makepkg/d9a6e8710b3 Thu Aug 31 10:53:20 UTC 2023)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
	TLS:           __thread
	SIGSEGV:       altstack
	Notifications: epoll
	Architecture:  amd64
	Disabled:      none
	Misc:          softdebug 
	Interpreter:   yes
	LLVM:          supported, not enabled.
	Suspend:       hybrid
	GC:            sgen (concurrent by default)

$ ldconfig -p | grep lua
	libtexlua53.so.5 (libc6,x86-64) => /usr/lib/libtexlua53.so.5
	libtexlua53.so (libc6,x86-64) => /usr/lib/libtexlua53.so
	libtexluajit.so.2 (libc6,x86-64) => /usr/lib/libtexluajit.so.2
	libtexluajit.so (libc6,x86-64) => /usr/lib/libtexluajit.so
	liblua5.2.so.5.2 (libc6,x86-64) => /usr/lib/liblua5.2.so.5.2
	liblua5.2.so (libc6,x86-64) => /usr/lib/liblua5.2.so
	libluajit-5.1.so.2 (libc6,x86-64) => /usr/lib/libluajit-5.1.so.2
	libluajit-5.1.so (libc6,x86-64) => /usr/lib/libluajit-5.1.so
	liblua.so.5.4 (libc6,x86-64) => /usr/lib/liblua.so.5.4
	liblua.so (libc6,x86-64) => /usr/lib/liblua.so
	liblua++.so.5.4 (libc6,x86-64) => /usr/lib/liblua++.so.5.4
	liblua++.so (libc6,x86-64) => /usr/lib/liblua++.so

[CasualPokePlayer]

BizHawk 2.8 would predate native lua support for Linux (LuaInterface doesn't work as it relies on a lua dll compiled against CLI/C++ which Mono does not like), the issue you're having is a separate issue resolved with 2.9.

[mDuo13]

Confirmed upgrading to 2.9.1 fixes the problem for me. (Left a note on the AUR re:what it took for me to get that to work.)

[YoshiRulz]

Would you like to take over maintaining the AUR package?

[mDuo13]

I appreciate the offer, but I don't really know anything about BizHawk nor package maintenance beyond updating hashes and version numbers, so I doubt I could do a good job.

[CasualPokePlayer]

@Ash123495 Does the crash still occur with ba24907d9c87337a6ea7320ed064033bde1d54bc

[freyacodes]

I was getting this exception with prebuilt 2.9.1 binaries on NixOS. For what it is worth, I am able to open the Lua console after building the current master branch with nix-shell -A emuhawk.

[CasualPokePlayer]

Are you talking about the prebuilt binaries in github releases? Those are going to expect the system liblua .so available from whatever package manager the distro uses.

[YoshiRulz]

Assuming you meant 2.9.1, it's packaged as nix-build -A emuhawk-2_9_1-bin (or emuhawk-2_9_1 to build from source; either way Lua works fine).