Symbols not loading "Loading...", intellisense completely broken

[jesper-regalrexnord]

Environment

• OS and Version:
  Windows 11 with vscode running in WSL with Ubuntu 22.04.5
• VS Code Version:
  1.109.2
• C/C++ Extension Version:
  1.30.5

Bug Summary and Steps to Reproduce

Bug Summary:
Starting from a week or so ago most symbols in vscode just show "Loading...". If I choose "Go To Declaration" it takes me ~30 seconds to get to the definition. "Find all references" doesn't show all references.

For some reason I haven't been able to downgrade to 1.29 which I know was working. I've tried removing the extension and "Install Specific Version..." but every time code --list-extensions --show-versions shows that I've installed the latest anyway so I'm stuck with a non-working intellisense.

Configuration and Logs

{
    "configurations": [
        {
            "name": "<redacted>",
            "compileCommands": "${env:BUILD_DIR}/compile_commands.json"
        }
    ],
    "version": 4
}

[bookmarks] Loaded 0 bookmarks
[proc] Executing command: /usr/bin/cmake --version
[proc] Executing command: /usr/bin/cmake -E capabilities
[kit] Successfully loaded 2 kits from ~/.vscode/cmake-kits.json
[variant] Loaded new set of variants
[main] Configuring project: <redacted> 
[proc] Executing command: /usr/bin/cmake -DCMAKE_BUILD_TYPE:STRING=Debug -DENABLE_SANITIZER_ADDRESS:STRING=OFF -DENABLE_SANITIZER_UNDEFINED_BEHAVIOR:STRING=OFF -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE -DCMAKE_CC_COMPILER:FILEPATH=gcc -DCMAKE_CXX_COMPILER:FILEPATH=g++ -DCMAKE_TOOLCHAIN_FILE= -DNDC_PRODLOCK_VER=55 -DNDC_HARDWARE= -DOPTION_STATUS_PATH=~/build/native/ -DOVKEY_SENTINEL_FILE= -DPython3_EXECUTABLE=~/python/.venv/bin/python -Dpybind11_DIR=~/python/.venv/lib/python3.10/site-packages/pybind11/share/cmake/pybind11 --no-warn-unused-cli -S ~ -B ~/build/native -G Ninja
[cmake] Not searching for unused variables given on the command line.
[cmake] -- Found pybind11: ~/python/.venv/lib/python3.10/site-packages/pybind11/include (found version "3.0.1")
[cmake] �[0mCompiling for dummy hardware�[0m
[cmake] -- Configuring done
[cmake] -- Generating done
[cmake] -- Build files have been written to: ~/build/native

Other Extensions

I have Copilot enabled with code completions disabled and also "Copilot Hover" disabled in case that would help which it didn't.

Additional context

No response

[bobbrow]

If your project is open source and you can share a link to it, we can try to reproduce the problem locally.

In the meantime, if the downgrade isn't working as expected, VS Code might not have removed the newer extension. You can remove it yourself by deleting the appropriate folder and that will often resolve the problem. It will be something like the following:

• ~/.vscode/extensions/ms-vscode.cpptools-1.30.5-linux-x64 // native VS Code
• ~/.vscode-server/extensions/ms-vscode.cpptools-1.30.5-linux-x64 // adds "-server" when using remoting/WSL
• ~/.vscode-insiders/extensions/ms-vscode.cpptools-1.30.5-linux-x64 // adds "-insiders" if you use VS Code Insiders

[sean-mcmanus]

@jesper-regalrexnord What does the C or C++ language status show in the bottom right? Does this repro with just your project or a simple hello world file?

[jesper-regalrexnord]

In the meantime, if the downgrade isn't working as expected, VS Code might not have removed the newer extension. You can remove it yourself by deleting the appropriate folder and that will often resolve the problem. It will be something like the following:

* `~/.vscode/extensions/ms-vscode.cpptools-1.30.5-linux-x64`  // native VS Code

* `~/.vscode-server/extensions/ms-vscode.cpptools-1.30.5-linux-x64`  // adds "-server" when using remoting/WSL

* `~/.vscode-insiders/extensions/ms-vscode.cpptools-1.30.5-linux-x64`  // adds "-insiders" if you use VS Code Insiders

Thank you for the instructions. Removing the extension by removing the folder works but it's simply not possible to install the older version for whatever reason. The newest version keeps on getting installed no matter what I do.

[jesper-regalrexnord]

@jesper-regalrexnord What does the C or C++ language status show in the bottom right? Does this repro with just your project or a simple hello world file?

I don't think it showed anything out of the ordinary. I have uninstalled this extension and installed clangd instead which so far has been much snappier and has more useful features.

[bobbrow]

Thank you for the instructions. Removing the extension by removing the folder works but it's simply not possible to install the older version for whatever reason. The newest version keeps on getting installed no matter what I do.

Perhaps VS Code is automatically updating you to the latest version? Usually the feature that lets you pick a previous version disables that until a new update comes out, but in case you need it in the future, you can toggle the behavior with this setting: