failed jump to function define in another source file.

[iysheng]

Issue Prelude

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the brackets) before filing your issue:

• I have read and understood YCM's CONTRIBUTING document.
• I have read and understood YCM's CODE_OF_CONDUCT document.
• I have read and understood YCM's README, especially the
  Frequently Asked Questions section.
• I have searched YCM's issue tracker to find issues similar to the one I'm
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  search.)
• If filing a bug report, I have included the output of vim --version.
• If filing a bug report, I have included the output of :YcmDebugInfo.
• If filing a bug report, I have attached the contents of the logfiles using
  the :YcmToggleLogs command.
• If filing a bug report, I have included which OS (including specific OS
  version) I am using.
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  my issue, using vim -Nu /path/to/YCM/vimrc_ycm_minimal, including what I
  expected to happen and what actually happened.
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  of install.py (or cmake/make/ninja) including its invocation
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Issue Details

Provide a clear description of the problem, including the following key
questions:

• What did you do?
  I touch two file with name a.c and b.c as below:

┗─╼[/tmp/abc]
▸ /usr/bin/cat a.c


int abc()
{

}
┏─╼[redl|openSUSE]╾─╼[07:42:05]╾─╼[0]
┗─╼[/tmp/abc]
▸ /usr/bin/cat b.c


extern int abc();

int main
{
        abc();
}

Include steps to reproduce here.

1. I open b.c with vim
2. I triger to jump abc defination with \jd
3. I couldn't jump to abc function defnation in a.c file but just go to extern int abc(); line

Include description of a minimal test case, including any actual code required
to reproduce the issue.

If you made changes to vimrc_ycm_minimal, pase them here:

<contents of ycm_vimrc_minimal>

• What did you expect to happen?

I want to achive jump to the function defined in another source fule.

• What actually happened?

Include description of the observed behaviour, including actual output,
screenshots, etc.

Diagnostic data

Output of vim --version

▸ vim --version
VIM - Vi IMproved 9.1 (2024 Jan 02)                                                                                                                                                         Included patches: 1-330

Output of YcmDebugInfo

Printing YouCompleteMe debug information...                                                                                                                                                 -- Resolve completions: Up front
-- Client logfile: /tmp/ycm_roo7lu42.log                                                                                                                                                    -- Server Python interpreter: /usr/bin/python3.10
-- Server Python version: 3.10.14
-- Server has Clang support compiled in: False
-- Clang version: None
-- Extra configuration file found and loaded
-- Extra configuration path: /home/redl/.vim/plugged/youcompleteme/third_party/ycmd/.ycm_extra_conf.py
-- Server running at: http://127.0.0.1:47787                                                                                                                                                -- Server process ID: 23164
-- Server logfiles:
--   /tmp/ycmd_47787_stdout_is5tb3fb.log
--   /tmp/ycmd_47787_stderr_clin_a34.log
-- Semantic highlighting supported: True
-- Virtual text supported: True
-- Popup windows supported: True

Output of YcmDiags

  0 b.c|5 col 1 error| Main cannot be declared as global variable [main_global_variable]                                                                                                      1 b.c|7 col 7 error| Unexpected ';' before '}' (fix available) [unexpected_semi]
  2 b.c|9 col 1 error| Expected ';' after top level declarator (fix available) [invalid_token_after_toplevel_declarator]                                                                     

Output of git rev-parse HEAD in YouCompleteMe installation directory

b6e8c64d96b02d60b3751d6a51af7dc958054f8f

Contents of YCM, ycmd and completion engine logfiles

Reproduce the issue with vim -Nu /path/to/YCM/vimrc_ycm_minimal, which
enabled debug logging and other useful diagnostics. Include a link to a
gist containing all of the log files listed by :YcmToggleLogs.

OS version, distribution, etc.

Include system information here.

Output of build/install commands

Include link to a gist containing the invocation and entire output of
install.py if reporting an installation issue.

[bstaletic]

That can work, but something needs to tell clangd that the other file exists. There are two options:

1. Generate compile_commands.json with your build system.
2. Manually visit the other file and go back.

In other words, without compile_commands.json, only the opened files "exist" for clangd.