Neovim 0.10.1 crashes when editing a Kotlin file and Treesitter ist activated

[cmon1701]

When I edit a simple Kotlin file (the one that is generated via gradle init) and Treesitter is active, Neovim frequently crashes.
After :TSUninstall kotlin, Neovim does not crash, so it is a Treesitter kotlin issue.

This solution did not help: #57
After TSInstall kotlin, Neovim crashes again.

[Akeboshiwind]

I'm getting this same crash, to help with reproduction here's a minimal config:

minimal.lua

local root = vim.fn.fnamemodify("./.repro", ":p")

-- set stdpaths to use .repro
for _, name in ipairs { "config", "data", "state", "cache" } do
  vim.env[("XDG_%s_HOME"):format(name:upper())] = root .. "/" .. name
end

-- bootstrap lazy
local lazypath = root .. "/plugins/lazy.nvim"
if not vim.uv.fs_stat(lazypath) then
  vim.fn.system {
    "git",
    "clone",
    "--filter=blob:none",
    "https://github.com/folke/lazy.nvim.git",
    lazypath,
  }
end
vim.opt.runtimepath:prepend(lazypath)

-- install plugins
local plugins = {
  {
    "nvim-treesitter/nvim-treesitter",
    build = ":TSUpdate",
    config = function () 
      local configs = require("nvim-treesitter.configs")

      configs.setup({
          ensure_installed = { "kotlin" },
          sync_install = false,
          highlight = { enable = true },
        })
    end
  },
}

require("lazy").setup(plugins, {
  root = root .. "/plugins",
})

And here's my steps to reproduce:

1. nvim -nu minimal.lua test.kt
2. If first time then wait for plugins to be installed then :q out of the lazy.nvim menu
3. Type "test"

I find that nvim crashes when you type the e

nvim -v

NVIM v0.10.0
Build type: Release
LuaJIT 2.1.1720049189

And running on an M2 MacBook Air

Hope this helps :)

[cmon1701]

Thank you, @Akeboshiwind! Now I have a sensible minimal.lua for a lot of things :-)
Your minimal.lua also causes crashes on my computer.
For me, a lot of letters cause the crash.

[LnxFCA]

Same here, I'm using the markdown and markdown-inline parsers. Typing the e letter within a string crashes Neovim with the following errors:

Process 16085 (nvim) of user 1000 dumped core.
                                                      
                                                      Stack trace of thread 16085:
                                                      #0  0x000071c88d61e5b0 n/a (/home/xxxx/.local/share/nvim/lazy/nvim-treesitter/parser/kotlin.so + 0x1e5b0)
                                                      #1  0x000071c88e8613ee ts_parser_parse (libtree-sitter.so.0 + 0xe3ee)
                                                      #2  0x000065435d1d8cc5 n/a (nvim + 0x243cc5)
                                                      #3  0x000071c88e7b8ef6 n/a (libluajit-5.1.so.2 + 0x6ef6)
                                                      #4  0x000071c88e7ccbea lua_pcall (libluajit-5.1.so.2 + 0x1abea)
                                                      #5  0x000065435d3ff9ee n/a (nvim + 0x46a9ee)
                                                      #6  0x000065435d4099d1 n/a (nvim + 0x4749d1)
                                                      #7  0x000065435d06ebcb decor_providers_invoke_win (nvim + 0xd9bcb)
                                                      #8  0x000065435d08ff72 n/a (nvim + 0xfaf72)
                                                      #9  0x000065435d08b9f6 update_screen (nvim + 0xf69f6)
                                                      #10 0x000065435d09ff7d n/a (nvim + 0x10af7d)
                                                      #11 0x000065435d095c6e n/a (nvim + 0x100c6e)
                                                      #12 0x000065435d342c33 state_enter (nvim + 0x3adc33)
                                                      #13 0x000065435d3fa155 n/a (nvim + 0x465155)
                                                      #14 0x000065435d2543f0 n/a (nvim + 0x2bf3f0)
                                                      #15 0x000065435d248b67 n/a (nvim + 0x2b3b67)
                                                      #16 0x000065435d342d2d state_enter (nvim + 0x3add2d)
                                                      #17 0x000065435d245d2a normal_enter (nvim + 0x2b0d2a)
                                                      #18 0x000065435cfdfb27 main (nvim + 0x4ab27)
                                                      #19 0x000071c88e495e08 n/a (libc.so.6 + 0x25e08)
                                                      #20 0x000071c88e495ecc __libc_start_main (libc.so.6 + 0x25ecc)
                                                      #21 0x000065435cfe1655 _start (nvim + 0x4c655)
                                                      
                                                      Stack trace of thread 16087:
                                                      #0  0x0000000000000000 n/a (n/a + 0x0)
                                                      ELF object binary architecture: AMD x86-64

Here is the markdown codeblock:

fun main() {
    println("He")
}

[Akeboshiwind]

@cmon1701 I can't take credit, it's from the telescope repo :)

Also to be clear it's not just the letter e, but the second letter typed.

You can do the following:

1. echo '"t' > test.kt
2. nvim -nu minimal.lua test.kt
3. Enter any character at the end of the partially created string

Interestingly you can keep entering things at the beginning of the string 🤷

[fwcd]

#136 fixes a crash in the scanner, mind checking if 0.3.8 fixes it?

[Akeboshiwind]

I can confirm that this fixes it for me 👍

[cmon1701]

I can confirm this, too. Thank you!
I wonder why nobody else noticed that before, is Kotlin used so rarely?