Youcompleteme: Win10 Gvim: Assertion failed!

[ketop]

When i use Gvim edit a .cpp file, a windows come up immediately.

Microsoft Visual C++ Runtime library
Assertion failed!
Program:
..bundle\YouCompleteMe\thirdparty.ycmd\libclang.dll
File: D:src\llvm_package_4.0.0\Ilvm\tools.../SourceLocation.h
line: 319
Expression: SrcMgr = = Loc.SrcMgr && Loc comes from
another SourceManagerr
For information on how your program can cause an assertion
failure. see the Visual C++ documentation on asserts
(Press Retry to debug the application - JIT must be enabled)

what's going wrong? or what should i do ? thanks for your help!

[puremourning]

Are you using a custom libclang build or the one out installer downloads?

On 18 May 2017, at 03:12, Patrick Dai [e-mail] wrote:

When i use Gvim edit a .cpp file, a windows come up immediately.

Microsoft Visual C++ Runtime library
Assertion failed!
Program:
..bundle\YouCompleteMe\thirdparty.ycmd\libclang.dll
File: D:src\llvm_package_4.0.0\Ilvm\tools.../SourceLocation.h
line: 319
Expression: SrcMgr = = Loc.SrcMgr && Loc comes from
another SourceManagerr
For information on how your program can cause an assertion
failure. see the Visual C++ documentation on asserts
(Press Retry to debug the application - JIT must be enabled)

what's going wrong? or what should i do ? thanks for your help!

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[ketop]

i simply use command "./install.py --clang-completer", and before that step, i have cmake and llvm installled.

[micbou]

Does it happen for any C++ project? Can you provide a test case (source file and .ycm_extra_conf.py) that reproduces the issue? Also, which version of Windows?

[ketop]

flags = [
'-Wall',
'-Wextra',
'-Werror',
'-fexceptions',
'-DNDEBUG',
# THIS IS IMPORTANT! Without a "-std=<something>" flag, clang won't know which
# language to use when compiling headers. So it will guess. Badly. So C++
# headers will be compiled as C headers. You don't want that so ALWAYS specify
# a "-std=<something>".
# For a C project, you would set this to something like 'c99' instead of
# 'c++11'.
'-std=c++11',
# ...and the same thing goes for the magic -x option which specifies the
# language that the files to be compiled are written in. This is mostly
# relevant for c++ headers.
# For a C project, you would set this to 'c' instead of 'c++'.
'-x',
'c++',
'-isystem',
'C:\Program Files\LLVM\include',
'-isystem',
'C:/TDM-GCC-64/lib/gcc/x86_64-w64-mingw32/5.1.0/include',
'-isystem',
'C:/TDM-GCC-64/lib/gcc/x86_64-w64-mingw32/5.1.0/include/c++',
'-isystem',
'C:/TDM-GCC-64/lib/gcc/x86_64-w64-mingw32/5.1.0/include/c++/backward',
'-isystem',
'C:/TDM-GCC-64/lib/gcc/x86_64-w64-mingw32/5.1.0/include/c++/x86_64-w64-mingw32',

]

I am using Win10 1607, any simple cpp code may cause this problem.

[ErrEoE]

The official LLVM :

-DLLVM_ENABLE_ASSERTIONS=On — Compile with assertion checks enabled (default is Yes for Debug builds, No for all other build types).

You should compile your LLVM with -DLLVM_ENABLE_ASSERTIONS=NO，it work for me.

[jackaccyou]

The official LLVM :

-DLLVM_ENABLE_ASSERTIONS=On — Compile with assertion checks enabled (default is Yes for Debug >builds, No for all other build types).
You should compile your LLVM with -DLLVM_ENABLE_ASSERTIONS=NO，it work for me

I am a beginner of YouCompleteMe. Can you elaborate a bit more? So i need to use the full installation method? I should compile my LLVM and CLANG myself?? Can i just download the pre build one?

[ErrEoE]

you should compile LLVM and CLANG,refer to:
https://chromium.googlesource.com/chromium/src/+/master/docs/updating_clang_format_binaries.md

My build.cmd:

set CC=cl
set CXX=cl
cmake -G Ninja ..\llvm -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT -DLLVM_ENABLE_ASSERTIONS=NO -DLLVM_ENABLE_THREADS=NO -DPYTHON_EXECUTABLE=C:\Users\xxxxx\AppData\Local\Programs\Python\Python36\python.exe

[jackaccyou]

Thank you so much, it is very helpful. But then i should follow the full installation instructions right? I am reading the guide for the full installation. It says that if we wish to use custom libclang, we have to refer to libclang.so, but I can't find it.... How did you do after compiling LLVM and CLANG to install YCM.. THX again..... i have been reinstalling windows just to get YCM working.. but it can't

[ErrEoE]

where cmake.exe  # You need to install this.
where svn.exe  # Maybe fix with: set PATH=%PATH%;D:\src\depot_tools\svn_bin
"c:\Program Files (x86)\Microsoft Visual Studio 14.0\vc\vcvarsall.bat" amd64_x86

set CLANG_REV=198831  # You must change this value (see above)

[from a clean directory, check out and build]
rmdir /S /Q llvm
rmdir /S /Q llvm-build
mkdir llvm
mkdir llvm-build
svn co http://llvm.org/svn/llvm-project/llvm/branches/release_40 llvm
cd llvm\tools
svn co http://llvm.org/svn/llvm-project/cfe/branches/release_40 clang
cd ..\..\llvm-build
set CC=cl
set CXX=cl
cmake -G Ninja ..\llvm -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT -DLLVM_ENABLE_ASSERTIONS=NO -DLLVM_ENABLE_THREADS=NO -DPYTHON_EXECUTABLE=C:\Users\xxxxx\AppData\Local\Programs\Python\Python36\python.exe

ninja all

llvm svn address: http://llvm.org/svn/llvm-project/llvm/branches/release_40
clang svn address: http://llvm.org/svn/llvm-project/cfe/branches/release_40

make sure your ninja.exe in %PATH%

[jackaccyou]

Really appreciate it, i am able to compile llvm and clang after following your steps. However, is it i have to compile ycm with -DEXTERNAL_LIBCLANG_PATH to the path of libclang.dll that i compiled?

i compiled that ycm with : cmake -G "Visual Studio 15 Win64" . "C:\Program Files\vim.vim\bundle\YouCompleteMe\third_party\ycmd\cpp" -DEXTERNAL_LIBCLANG_PATH="C:\llvm-build\bin\libclang.dll"

then : make --build . --target ycm_core --config Release
(it shows libclang.dll : fatal error LNK1107)

[ErrEoE]

set EXTRA_CMAKE_ARGS="-DPATH_TO_LLVM_ROOT=D:/tools/LLVM4.0"
python install.py --clang-completer --system-libclang --omnisharp-completer --gocode-completer --msvc=14 --tern-completer

I use visual studio 2017 ..

[yehuohan]

I got that it would cause the Assertion Error when you add c-header-path and cpp-header-path to ycm_extra_conf.py at the same time.

For example:
you should comment PART 1 for c++ project or comment PART 2 for c project at the ycm_extra_conf.py below.

WIN_GW = 'C:/MyApps/msys64/mingw64/lib/gcc/x86_64-w64-mingw32/6.2.0/include/'
WIN_GW_C = 'C:/MyApps/msys64/mingw64/lib/gcc/x86_64-w64-mingw32/6.2.0/include/'
WIN_GW_CPP = 'C:/MyApps/msys64/mingw64/lib/gcc/x86_64-w64-mingw32/6.2.0/include/c++'

flags = [
# User Defined

# PART 1
'-isystem',
WIN_GW,
'-isystem',
WIN_GW + 'ssp',

# PART 2
#  '-isystem',
#  WIN_GW + 'c++',
#  '-isystem',
#  WIN_GW + 'c++/bits',
#  '-isystem',
#  WIN_GW + 'c++/profile',
#  '-isystem',
#  WIN_GW + 'c++/x86_64-w64-mingw32',
#  '-isystem',
#  WIN_GW + 'c++/x86_64-w64-mingw32/bits',

[ketop]

i will try it.

[micbou]

@ketop Could you try again with the latest version of YCM? You'll need to run the install.py script with the --clang-completer option after updating YCM.

[micbou]

I am going to assume this is fixed in the latest version of YCM (it should be). We can always reopen if that's not the case.