Incomplete types detected by YCM

[robertsawko]

Hello,

I am working again with YCM developing an application for library called OpenFOAM. The project ycm file as well as the project are here. The YCM file works by using environmental variables to include the correct directories. Completion and detecting errors mostly works, but I have a few that I cannot quite nail down and I was wondering if I can ask for your input.

I get two errors:

error: 'SomeType' does not refer to a value
error: incomplete type 'SomeTemplatedType' named in nested name specifier

I think they are related as it's all about templated types or types that I pass as template arguments. None of this errors appears in the compilation. I tried using -include switch in .ycm_extra_conf.py to include the file containing the templated class explicitly but that didn't resolve it.

As far as I can see I am putting exactly the same options and includes to my cmake and to YCM, so I feel that the difference must be more subtle.

Also, the typdef was not deteted until I included the file containing them explicitly

    '-include ' + foam_src + '/finiteVolume/lnInclude/volFieldsFwd.H'

This may or may not be related. Another little thing that may be going on here is that OpenFOAM uses environmental variables to instantiate some template classes. For instance Vector can be float or double depending on the type of compilation specified in the environment.

[micbou]

There are missing commas in your .ycm_extra_conf.py file at end of lines 50 and 75. You can use the command :YcmDebugInfo to check if the flags are correctly set.

[robertsawko]

Yes, you're right, but I must have introduced that when I was playing around. I've just fixed and the incomplete types are still there.

I've compared the flags from :YcmDebugInfo with my make VERBOSE=1 before and I can't spot the difference. If you could have a look at it independently, perhaps it will help:

From YCM

-- Flags for /home/c111269/projects/stffoam2/src/translationalFrame.C loaded from /home/c111269/projects/stffoam2/.ycm_extra_conf.py:                          
-- ['-DSTF_EXPORTS', '-m64', '-Dlinux64', '-DWM_ARCH_OPTION=64', '-DWM_DP', '-DWM_LABEL_SIZE=32', '-std=c++11', '-Wno-unused-local-typedefs', '-Wall', '-Wextra
', '-Wno-unused-parameter', '-Wold-style-cast', '-Wnon-virtual-dtor', '-Wno-unused-variable', '-std=c++11', '-x', 'c++', '-I/home/c111269/OpenFOAM/OpenFOAM-3.0
.0/src/fvOptions/lnInclude', '-I/home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/finiteVolume/lnInclude', '-I/home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/meshTools/lnInc
lude', '-I/home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/OpenFOAM/lnInclude', '-I/home/c111269/projects/stffoam2/./src/', '-I/home/c111269/projects/stffoam2/.', '-I
/home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/OSspecific/POSIX/lnInclude', '-include /home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/OpenFOAM/lnInclude/Vector.H', '-incl
ude /home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/finiteVolume/lnInclude/volFieldsFwd.H', '-isystem', '/home/c111269/.vim/bundle/YCM/third_party/ycmd/ycmd/../clang
_includes']

From cmake/make

cd /home/c111269/projects/stffoam2/build/src && /usr/bin/c++   -DSTF_EXPORTS -m64 -Dlinux64 -DWM_ARCH_OPTION=64 -DWM_DP -DWM_LABEL_SIZE=32 -std=c++11 -Wno-unus
ed-local-typedefs -Wall -Wextra -Wno-unused-parameter -Wold-style-cast -Wnon-virtual-dtor -Wno-unused-variable -O3 -DNoRepository -ftemplate-depth-100 -fPIC -X
linker --add-needed -Xlinker --no-as-needed -fPIC -I/home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/fvOptions/lnInclude -I/home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/f
initeVolume/lnInclude -I/home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/meshTools/lnInclude -I/home/c111269/OpenFOAM/OpenFOAM-3.0.0/src/OpenFOAM/lnInclude -I/home/c1
11269/OpenFOAM/OpenFOAM-3.0.0/src/OSspecific/POSIX/lnInclude    -o CMakeFiles/STF.dir/translationalFrame.C.o -c /home/c111269/projects/stffoam2/src/translationalFrame.C```

[micbou]

Did you try to add the -DNoRepository flag? It seems to work for me.

[robertsawko]

Thanks for the suggestion. It has changed things but it isn't working for me, unfortunately.

I still get incomplete types for Foam::wordList and the function completion doesn't work. Also I am now getting no member named 'translationalFrame' in namespace 'Foam which is defined in included translationalFrame.H in the very same directory as the C file.

Should I be using -include flag at all?

[micbou]

No, you need to remove them. With those flags, I am getting the same errors that you are experiencing.

[robertsawko]

"It is alive!"

Thanks ever so much. That will help me a lot.

[peter-duanyu]

Did you finally resolve this problem? I got the same problem when I opened OpenFOAM.