GNU bug report logs - #72863
30.0.50; tree-sitter elixir-ts-mode hangs and memory leak on some elixir and heex code

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From: mail <at> ssbb.me
To: Wilhelm Kirschbaum <wkirschbaum <at> gmail.com>
Cc: Yuan Fu <casouri <at> gmail.com>, Eli Zaretskii <eliz <at> gnu.org>, 72863 <at> debbugs.gnu.org
Subject: bug#72863: 30.0.50; tree-sitter elixir-ts-mode hangs and memory leak on some elixir and heex code
Date: Wed, 4 Sep 2024 11:42:01 +0400

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I can confirm that I never had such problems in heex-ts-mode but only with inline heex in elixir-ts-mode.

> On Sep 4, 2024, at 10:39 AM, Wilhelm Kirschbaum <wkirschbaum <at> gmail.com> wrote:
> 
> 
> 
> On Thu, Aug 29, 2024 at 8:14 AM Yuan Fu <casouri <at> gmail.com <mailto:casouri <at> gmail.com>> wrote:
>> 
>> 
>> > On Aug 28, 2024, at 10:09 PM, Eli Zaretskii <eliz <at> gnu.org <mailto:eliz <at> gnu.org>> wrote:
>> > 
>> >> From: mail <at> ssbb.me <mailto:mail <at> ssbb.me>
>> >> Date: Thu, 29 Aug 2024 06:57:38 +0400
>> >> 
>> >> Code in attached file cause Emacs to hang and memory leak infinitely
>> >> while editing. Try to open this code in elixir-ts-mode and move cursor
>> >> on line 6 (between <:loading>  </:loading>) and type char by char:
>> >> 
>> >> <.some_component a={
>> >> 
>> >> (for some reason it does not happen with electric-pair-mode when {}
>> >> inserted automatically).
>> >> 
>> >> I am able to reproduce this with -Q on few different machines (Linux and
>> >> MacOS) and Emacs 29, 30.0.5 and current HEAD.
>> >> 
>> >> C-g does nothing (including with debug-on-quit and sending SIGUSR2)
>> >> 
>> >> At the same time I can't reproduce this in other tree-sitter based editors.
>> >> 
>> >> I got this sample code sample from elixir-ts-mode repo but now it's moved
>> >> to the Emacs core so seems to be out of scope of Github repo issues.
>> >> 
>> >> Attaching samle code and LLDB backtrace. 
>> >> Also attaching report from built-in MacOS crash reporting tool just in case.
>> > 
>> > Thanks.
>> > 
>> > Wilhelm and Yuan, could you please look into this soon?
>> 
>> That’s bizarre, might have some bug around ranges. I’m looking into this. Hopefully I can figure it out in a few days :-(
>> 
>> Yuan
> 
> I can reproduce the issue by following the above instructions, but need to do some digging. It only seems to be the case with embedded heex and not with heex-ts-mode by itself.
> 
> WIlhelm
> 
> 
> 

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