Function definition not found

[icegood]

Environment

• OS and Version: Ubuntu 25.10

• VS Code Version:
  Version: 1.107.0
  Commit: 618725e67565b290ba4da6fe2d29f8fa1d4e3622
  Date: 2025-12-10T07:43:47.883Z
  Electron: 39.2.3
  ElectronBuildId: 12895514
  Chromium: 142.0.7444.175
  Node.js: 22.21.1
  V8: 14.2.231.21-electron.0
  OS: Linux x64 6.17.0-8-generic

• C/C++ Extension Version: 1.29.3

• If using SSH remote, specify OS of remote machine:

Bug Summary and Steps to Reproduce

Bug Summary:
Cannot find function definition

Steps to reproduce:

1. Import easy project. Say, from https://github.com/collectd/collectd

2. Find line with function call plugin_register_complex_read from some plugin, say, from curl_jolokia.c

3. Try to find definition via ctrl+click plugin_register_complex_read
   Expected behavior:

4. plugin.c opened with definition

Actual:

1. window is opened with all files where calls of plugin_register_complex_read detected. And no
   plugin.c within them.

Workaround:
find via 'Fimd in files' with filter gor headers and do ctrl+click from header.

Configuration and Logs

none

Other Extensions

No response

Additional context

No response

[sean-mcmanus]

@icegood I don't repro the issue:

Do you see the function in the outline view when you open it?

Maybe you can run the C/C++: Reset IntelliSense Database command to rebuild your database?

[icegood]

https://drive.google.com/file/d/17dR0rBeGBffhYNLPOh_czKNwxMhs8Duh/view?usp=sharing

[icegood]

Hi @sean-mcmanus
Please find attach above

[icegood]

@sean-mcmanus Any update???

[sean-mcmanus]

@icegood I don't know. I don't repro the issue still. Your video seems to show it not finding the definition and falling back to a find all references. Maybe set "C_Cpp.loggingLevel": "8" and check the C/C++ logging for any errors or for a reason it wouldn't be able to parse the definition and save it to the database, maybe a sqlite or tag parsing error message?

[sean-mcmanus]

@icegood You could also try reducing the repro, such as opening a new folder and just adding the one file whose definition can't be found to see if that works, etc.

It's possible the files with the definition might be excluded for tag parsing from a files.exclude.

[icegood]

https://drive.google.com/file/d/1FWUw212kKC6cHGxhz9hOo7m-XtpGdTce/view?usp=sharing
here are logs. Actually, chatgpt suggests
https://chatgpt.com/share/698ceb92-4c04-8008-98b9-7ebd14a61bdf
and it works for me

[sean-mcmanus]

@icegood Your logging is not from the start or after a Reset IntelliSense Database, so I can't see any parsing being done for the plugin.c file.

Logging shows

[Warning] Some references may be missing, because workspace parsing was incomplete when Find All References was started.

which means it hasn't finished parsing the workspace.