[BUG] Crash when editing Python file

[wkec]

I have Python LSP server configured to use with ecode.
I was editing a Python file (a CLI tool using the Python Click library, nothing crazy).
An autocomplete was triggered for arguments of a Click library function.
Then the crash happened.

Log is shown below.
It looks like the EE::System::Zip::addFile function in the eepp library is the culprit

Stack trace (most recent call last):
#21 Object "KERNEL32", at 0x7ffb387e7374, in BaseThreadInitThunk
#20 Object "msvcrt", at 0x7ffb3893b02c, in endthreadex
#19 Object "msvcrt", at 0x7ffb3893af5a, in beginthreadex
#18 Object "eepp", at 0x7ffacdf72833, in EE::System::Zip::addFile(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)
#17 Object "eepp", at 0x7fface579e01, in non-virtual thunk to EE::UI::HTMLTextInput::~HTMLTextInput()
#16 Object "eepp", at 0x7ffacdbf06ea, in EE::System::Process::startAsyncRead(std::function<void (char const*, unsigned long long)>, std::function<void (char const*, unsigned long long)>)
#15 Object "ecode", at 0x7ff6bcf8c4d4, in ecode::LSPClientServer::readStdOut(char const*, unsigned long long)
#14 Object "ecode", at 0x7ff6bcf60765, in ecode::LSPClientServer::workDoneProgress(ecode::LSPProgressParamsecode::LSPWorkDoneProgressValue const&)
#13 Object "ecode", at 0x7ff6bcf22c39, in ecode::LSPClientPlugin::update(EE::UI::UICodeEditor*)
#12 Object "ecode", at 0x7ff6bcfb4006, in ecode::PluginManager::sendResponse(ecode::Plugin*, ecode::PluginMessageType, ecode::PluginMessageFormat, void const*, ecode::PluginIDType const&)
#11 Object "ecode", at 0x7ff6bcd647c1, in ecode::AutoCompletePlugin::processResponse(ecode::PluginMessage const&)
#10 Object "ecode", at 0x7ff6bcd6389e, in ecode::AutoCompletePlugin::processResponse(ecode::PluginMessage const&)
#9 Object "ecode", at 0x7ff6bcd625e8, in ecode::AutoCompletePlugin::processSignatureHelp(ecode::LSPSignatureHelp const&)
#8 Object "eepp", at 0x7ffacdd32ff4, in EE::UI::Doc::TextDocument::getSelectedText(unsigned long long const&) const
#7 Object "eepp", at 0x7ffacdd32bc1, in EE::UI::Doc::TextDocument::getText(EE::UI::Doc::TextRange const&) const
#6 Object "eepp", at 0x7ffacdc70a08, in EE::String::reserve(unsigned long long)
#5 Object "eepp", at 0x7fface5a9c09, in non-virtual thunk to EE::UI::HTMLTextInput::~HTMLTextInput()
#4 Object "eepp", at 0x7fface579838, in non-virtual thunk to EE::UI::HTMLTextInput::~HTMLTextInput()
#3 Object "eepp", at 0x7fface572a33, in EE::System::Zip::addFile(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)
#2 Object "eepp", at 0x7fface37a989, in EE::System::Zip::addFile(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)
#1 Object "eepp", at 0x7fface413baa, in EE::System::Zip::addFile(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)
#0 Object "msvcrt", at 0x7ffb3892f1fb, in abort

[SpartanJ]

An autocomplete was triggered for arguments of a Click library function.

do you remember which function? There was a bug in 0.7.4 that functions with many many arguments could crash the editor in AutoCompletePlugin::processSignatureHelp, but it should be fixed in 0.8.0.

It looks like the EE::System::Zip::addFile function in the eepp library is the culprit

Clarification, that's just garbage, the last real call in the stack is EE::String::reserve but we have enough information anyways.

I don't see any obvious bug at first glance, nor I wasn't able to reproduce it. But I'm confident this must happen on a very specific scenario, let's try to narrow down the issue.

Whatever information you can provide regarding of what you were editing it will be very helpful, knowing the same exact function signature might help, also confirming if this is reproducible by you again or not is also useful. Thanks

[wkec]

The function that triggered auto complete is click.argument.
I reproduced the crash with just a single file in a folder, and just one function in this file, as shown in these screen shots

I am running ecode 0.8.0 on an old PC.
I am using Python in a massive Anaconda environment if that matters.

Output from F12 console

2026-05-19 09:05:43 - INFO: ecode starting with these command line arguments: -x C:\Users\user\workspace\temp\test
2026-05-19 09:05:43 - INFO: C:\Users\user\AppData\Roaming\ecode\config.cfg loaded in 0.19ms
2026-05-19 09:05:43 - INFO: C:\Users\user\AppData\Roaming\ecode\state.cfg loaded in 0.09ms
2026-05-19 09:05:43 - INFO: Plugin: Auto Complete (PID 14396) loaded in 0.529ms
2026-05-19 09:05:43 - INFO: Plugin: Auto Formatter (PID 14396) loaded in 1.145ms
2026-05-19 09:05:43 - INFO: Plugin: Debugger (PID 14396) loaded in 1.653ms
2026-05-19 09:05:43 - INFO: Plugin: Linter (PID 14396) loaded in 1.802ms
2026-05-19 09:05:43 - INFO: Plugin: AI Assistant (PID 14396) loaded in 2.107ms
2026-05-19 09:05:43 - INFO: Plugin: LSP Client (PID 14396) loaded in 2.589ms
2026-05-19 09:05:43 - INFO: Syntax definitions loaded in 2.185ms.
2026-05-19 09:05:43 - INFO: SyntaxDefinitionManager loaded custom languages in: 0.119ms.
2026-05-19 09:05:43 - INFO: Color Schemes loaded in 1.06ms.
2026-05-19 09:05:43 - INFO: Terminal Color Schemes loaded in 0.25ms.
2026-05-19 09:05:43 - INFO: Fonts loaded in: 4.614ms
2026-05-19 09:05:43 - INFO: Plugin: Git (PID 14396) loaded in 23.667ms
2026-05-19 09:05:43 - INFO: Plugin: Spell Checker (PID 14396) loaded in 42.798ms
2026-05-19 09:05:44 - INFO: Engine Initialized Successfully.
Version: eepp version 3.0.0 (codename: "Khaya")
Build time: Apr 26 2026 17:55:33
Platform: Windows
OS: Microsoft Windows 10
Arch: x86_64
CPU Cores: 8
Process Path: D:\tool\ecode
Current Working Directory: C:\Users\user
Home Directory: C:\Users\user
Disk Free Space: 402.81 GiB
Window/Input Backend: SDL 2.32.8
GL Backend: OpenGL 2
GL Vendor: NVIDIA Corporation
GL Renderer: GeForce GT 630/PCIe/SSE2
GL Version: 4.6.0 NVIDIA 456.71
GL Shading Language Version: 4.60 NVIDIA
Resolution: 1145x858
Window scale: 1.00
2026-05-19 09:05:44 - INFO: ecode version 0.8.0 (codename: "Kappa") initializing
2026-05-19 09:05:44 - INFO: ecode resources path: D:\tool\ecode\assets
2026-05-19 09:05:44 - INFO: ecode config path: C:\Users\user\AppData\Roaming\ecode
2026-05-19 09:05:44 - INFO: Window creation took: 210.501007ms
2026-05-19 09:05:44 - INFO: C:\Users\user\AppData\Roaming\ecode\keybindings.cfg loaded in 0.24ms
2026-05-19 09:05:44 - INFO: StyleSheet loaded in: 3.931 ms.
2026-05-19 09:05:44 - INFO: StyleSheet loaded in: 0.049 ms.
2026-05-19 09:05:44 - INFO: StyleSheet loaded in: 1.626 ms.
2026-05-19 09:05:44 - INFO: Base UI took: 257.09 ms
2026-05-19 09:05:44 - INFO: Settings Menu took: 36.776001ms
2026-05-19 09:05:44 - INFO: Complete UI took: 311.05 ms
2026-05-19 09:05:44 - INFO: Loading DirTree: C:\Users\user\workspace\temp\test
2026-05-19 09:05:44 - INFO: C:\Users\user\AppData\Roaming\ecode\projects\4064e392fd870bdddd262f1ea906e51b.cfg loaded in 0.12ms
2026-05-19 09:05:44 - INFO: DirTree read in: 0.652ms. Found 1 files.
2026-05-19 09:05:44 - INFO: Document "C:\Users\user\workspace\temp\test\test.py" loaded in 0.05ms.
2026-05-19 09:05:44 - INFO: Load project took: 2.92 ms
2026-05-19 09:05:44 - INFO: Init ProjectTreeView took: 322.02 ms
2026-05-19 09:05:44 - INFO: Starting LSP server: pylsp
2026-05-19 09:05:44 - INFO: LSP command: C:\Users\user\AppData\Local\miniconda3\Scripts\pylsp.exe --check-parent-process
2026-05-19 09:05:44 - INFO: Document "C:\Users\user\AppData\Roaming\ecode\projects\state\4064e392fd870bdddd262f1ea906e51b\63aa147726c2f5054a5e3e40a54decde.test.py" loaded in 0.10ms.
2026-05-19 09:05:44 - INFO: StyleSheet loaded in: 0.084 ms.
2026-05-19 09:05:44 - INFO: Process::startAsyncRead called for command: C:\Users\user\AppData\Local\miniconda3\Scripts\pylsp.exe
2026-05-19 09:05:44 - INFO: Process::startAsyncRead thread started for command: C:\Users\user\AppData\Local\miniconda3\Scripts\pylsp.exe
2026-05-19 09:05:44 - INFO: LSPClientServer server pylsp calling initialize
2026-05-19 09:05:44 - INFO: StyleSheet loaded in: 0.154 ms.
2026-05-19 09:05:44 - INFO: First update took: 380.63 ms
2026-05-19 09:05:44 - INFO: First frame took: 395.31 ms
2026-05-19 09:05:44 - INFO: App Ready
2026-05-19 09:05:47 - INFO: LSPClientServer server pylsp calling initialized
2026-05-19 09:05:47 - INFO: LSPClientServer server pylsp calling workspace/didChangeConfiguration
2026-05-19 09:05:47 - INFO: LSPClientServer server pylsp calling textDocument/didOpen file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:05:47 - INFO: LSPClientServer server pylsp calling textDocument/documentSymbol file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:05:47 - INFO: LSPClientServer server pylsp calling textDocument/foldingRange file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:05:48 - INFO: LSPClientServer server pylsp calling result for id "90cddc74-6e36-4f3a-95db-611aa12ae41f"
2026-05-19 09:05:48 - INFO: LSPClientServer::publishDiagnostics: file:///c:/Users/user/workspace/temp/test/test.py - returned 1 items
2026-05-19 09:05:50 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:04 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:15 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:24 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:26 - INFO: LSPClientServer server pylsp calling textDocument/didChange file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:26 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:26 - INFO: LSPClientServer server pylsp calling result for id "ecb7207a-0e2d-4d38-85e9-1ad30f6f09cc"
2026-05-19 09:06:27 - INFO: LSPClientServer::publishDiagnostics: file:///c:/Users/user/workspace/temp/test/test.py - returned 1 items
2026-05-19 09:06:27 - INFO: LSPClientServer server pylsp calling textDocument/documentSymbol file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:28 - INFO: LSPClientServer server pylsp calling textDocument/didChange file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:28 - INFO: LSPClientServer server pylsp calling textDocument/completion file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:28 - INFO: LSPClientServer server pylsp calling result for id "0db76a74-0b23-47f9-a6e2-9f9e353a1d07"
2026-05-19 09:06:28 - INFO: LSPClientServer::publishDiagnostics: file:///c:/Users/user/workspace/temp/test/test.py - returned 3 items
2026-05-19 09:06:29 - INFO: LSPClientServer server pylsp calling textDocument/documentSymbol file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:30 - INFO: LSPClientServer server pylsp calling textDocument/foldingRange file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:32 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:36 - INFO: LSPClientServer server pylsp calling textDocument/didChange file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:36 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:37 - INFO: LSPClientServer server pylsp calling result for id "785a8027-2a3b-4795-8f2e-68affc36756b"
2026-05-19 09:06:37 - INFO: LSPClientServer::publishDiagnostics: file:///c:/Users/user/workspace/temp/test/test.py - returned 1 items
2026-05-19 09:06:37 - INFO: LSPClientServer server pylsp calling textDocument/documentSymbol file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:38 - INFO: LSPClientServer server pylsp calling textDocument/didChange file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:38 - INFO: LSPClientServer server pylsp calling result for id "b62bc360-64af-43bf-9bad-a5fd7949c98d"
2026-05-19 09:06:38 - INFO: LSPClientServer::publishDiagnostics: file:///c:/Users/user/workspace/temp/test/test.py - returned 1 items
2026-05-19 09:06:39 - INFO: LSPClientServer server pylsp calling textDocument/documentSymbol file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:40 - INFO: LSPClientServer server pylsp calling textDocument/foldingRange file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:42 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:56 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:06:58 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py
2026-05-19 09:07:43 - INFO: LSPClientServer server pylsp calling textDocument/hover file:///c:/Users/user/workspace/temp/test/test.py

[SpartanJ]

Thank you very much, that was very helpful, I was able to reproduce it, it's fixed in the development branch, you'll be able to test the fix from the nightly builds in a few minutes once it's built.

[wkec]

Thank you for fixing it! and for creating such an amazing editor

[SpartanJ]

Thanks! =) I'll reopen because I close the ticket once they're in a stable release.