deoplete-clang get errors

[andrea993]

Deoplete-clang doesn't work I get this error when it should complete the cpp syntax:

[deoplete] Could not get completions from: clang.  Use :messages for error details.   

:messages says:

[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/sources/deople
te_clang.py", line 151, in gather_candidates                                                         
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/sources/deople
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/sources/deople
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/clang/clang/ci
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/clang/clang/ci
"pippo.cpp" 8L, 65C                                                                                  
[deoplete] Traceback (most recent call last):                                                        
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete.nvim/rplugin/python3/deoplete/deoplete.py", l
ine 98, in gather_results                                                                            
[deoplete]     ctx['candidates'] = source.gather_candidates(ctx)                                     
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/sources/deople
te_clang.py", line 151, in gather_candidates                                                         
[deoplete]     params)                                                                               
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/sources/deople
te_clang.py", line 314, in get_completion                                                            
[deoplete]     tu = self.get_translation_unit(fname, args, buf)                                      
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/sources/deople
te_clang.py", line 301, in get_translation_unit                                                      
[deoplete]     tu = self.index.parse(fname, args, buf, flags)                                        
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/clang/clang/ci
ndex.py", line 2322, in parse                                                                        
[deoplete]     self)                                                                                 
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/clang/clang/ci
ndex.py", line 2440, in from_source                                                                  
[deoplete]     raise TranslationUnitLoadError("Error parsing translation unit.")                     
[deoplete] clang.cindex.TranslationUnitLoadError: Error parsing translation unit.                    
[deoplete] Could not get completions from: clang.  Use :messages for error details.                  
[deoplete] Traceback (most recent call last):                                                        
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete.nvim/rplugin/python3/deoplete/deoplete.py", l
ine 98, in gather_results                                                                            
[deoplete]     ctx['candidates'] = source.gather_candidates(ctx)                                     
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/sources/deople
te_clang.py", line 151, in gather_candidates                                                         
[deoplete]     params)                                                                               
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/sources/deople
te_clang.py", line 314, in get_completion                                                            
[deoplete]     tu = self.get_translation_unit(fname, args, buf)                                      
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/sources/deople
te_clang.py", line 301, in get_translation_unit                                                      
[deoplete]     tu = self.index.parse(fname, args, buf, flags)                                        
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/clang/clang/ci
ndex.py", line 2322, in parse                                                                        
[deoplete]     self)                                                                                 
[deoplete]   File "/home/andrearch/.vim/bundle/deoplete-clang/rplugin/python3/deoplete/clang/clang/ci
ndex.py", line 2440, in from_source                                                                  
[deoplete]     raise TranslationUnitLoadError("Error parsing translation unit.")                     
[deoplete] clang.cindex.TranslationUnitLoadError: Error parsing translation unit.                    
[deoplete] Could not get completions from: clang.  Use :messages for error details. 

this is my init.vim
https://arin.ga/pN1SjM

[zchee]

@andrea993 Thanks issue :)

Hmm.. I have not yet debug, will check it.
Sorry, if you have time, could you post a sample C source at occurring this problem?

[andrea993]

I have this issue with all .cpp files

#include <iostream>

using namespace std;

int main()
{
    std::
}

If. for example. I go at the end of std:: and I press a to write I get the error

[zchee]

@andrea993 I think your problem same as #54
That's not yet merged, but Could you try it?

[Shougo]

@andrea993

• Please upload the compilation database file.
• I cannot get your init.vim. Please upload it to another place.

[parnmatt]

Rather than creating another issue, this issue seems to be similar if not the same.

I do not know what the compilation database file is, @Shougo, where would this file be located?

Minimal init.vim

" init.vim

" dein plugin manager
function! InstallPluginManager()
    echom 'Installing dein...'
    silent! call mkdir($XDG_CONFIG_HOME . '/nvim/dein', 'p')
    silent! execute '!curl --fail --location --output /tmp/dein.sh '
             \ . 'https://raw.githubusercontent.com/'
             \ . 'Shougo/dein.vim/master/bin/installer.sh'
    silent! execute '!sh /tmp/dein.sh ' . $XDG_CONFIG_HOME . '/nvim/dein'
endfunction

if !filereadable($XDG_CONFIG_HOME . '/nvim/dein/'
            \ . 'repos/github.com/Shougo/dein.vim/autoload/dein.vim')
    call InstallPluginManager()
endif

set runtimepath+=$XDG_CONFIG_HOME/nvim/dein/repos/github.com/Shougo/dein.vim
call dein#begin($XDG_CONFIG_HOME . '/nvim/dein')
call dein#add('Shougo/dein.vim')
call dein#add('Shougo/deoplete.nvim')
call dein#add('zchee/deoplete-clang')
call dein#end()

if dein#check_install()
    call dein#install()
endif

filetype plugin indent on
syntax enable
call deoplete#enable()
autocmd CompleteDone * pclose

The test file I used was:

// test.cc

#include <vector>

std

As typing the d in std the following errors were printed to :messages

[deoplete] Traceback (most recent call last):
[deoplete]   File "/home/parnmatt/.dotfiles/nvim/.config/nvim/dein/.cache/init.vim/.dein/rplugin/python3/deoplete/deoplete.py", line 100, in gather_results
[deoplete]     ctx['candidates'] = source.gather_candidates(ctx)
[deoplete]   File "/home/parnmatt/.config/nvim/dein/.cache/init.vim/.dein/rplugin/python3/deoplete/sources/deoplete_clang.py", line 151, in gather_candidates
[deoplete]     params)
[deoplete]   File "/home/parnmatt/.config/nvim/dein/.cache/init.vim/.dein/rplugin/python3/deoplete/sources/deoplete_clang.py", line 314, in get_completion
[deoplete]     tu = self.get_translation_unit(fname, args, buf)
[deoplete]   File "/home/parnmatt/.config/nvim/dein/.cache/init.vim/.dein/rplugin/python3/deoplete/sources/deoplete_clang.py", line 301, in get_translation_unit
[deoplete]     tu = self.index.parse(fname, args, buf, flags)
[deoplete]   File "/home/parnmatt/.config/nvim/dein/.cache/init.vim/.dein/rplugin/python3/deoplete/clang/clang/cindex.py", line 2322, in parse
[deoplete]     self)
[deoplete]   File "/home/parnmatt/.config/nvim/dein/.cache/init.vim/.dein/rplugin/python3/deoplete/clang/clang/cindex.py", line 2440, in from_source
[deoplete]     raise TranslationUnitLoadError("Error parsing translation unit.")
[deoplete] clang.cindex.TranslationUnitLoadError: Error parsing translation unit.
[deoplete] Could not get completions from: clang.  Use :messages for error details.

[Shougo]

I do not know what the compilation database file is, @Shougo, where would this file be located?

Hm. It is not specified.
We should improve the error message.
But where is your libclang installed?
I think you need to set it like this.

let g:deoplete#sources#clang#libclang_path = '/usr/lib/libclang.so'

[parnmatt]

Indeed, libclang is located, and symlinked to /usr/lib/libclang.so -> libclang.so.3.9.

This is a standard place for the library to be located, and certainly should be in the library path.
Why wouldn't this be found by neovim / deoplete-clang?

I will try the minimal configuration with the path hardcoded as suggested and get back to you.

[Shougo]

This is a standard place for the library to be located, and certainly should be in the library path.
Why wouldn't this be found by neovim / deoplete-clang?

Unfortunately, it is not standard.
This is for Ubuntu 16.04 configuration.

let g:deoplete#sources#clang#libclang_path = '/usr/lib/llvm-3.8/lib/libclang-3.8.so'

[parnmatt]

Yep correcting this has solved my issue.
I correctly pointed libclang_path and clang_header to the correct paths.

However the moment I start typing #include it freezes (I assume looking for headers to complete; and uses ) for 5-10; and does so whenever I edit on that line.

[Shougo]

Yes, deoplete-clang has many performance problems.
But it will be fixed by @zchee .

[Cypher1]

I'm also having a similar problem, can we just get deoplete-clang to ignore lines that start with '#'?

(or have an option for that)

[kierun]

I have the same issue (I think?) but setting libclang_path and clang_header did not solve it. The really weird thing is that after the error, completion works just fine.

Is there something I can try to provide you with more debug information?

[sshtmc]

I have the same problem. Any update on the issue?

[Shougo]

You should use deoplete-clang2 instead.

https://github.com/tweekmonster/deoplete-clang2