No code completion for Objective C++ with clangd

[blueberryscone238]

Create a .mm file, put #import <iostream> and then type std::. You will see nothing being suggested.

Other features of clangd are working fine. Only code completion doesn't work.

p/s: This clangd is from MSYS2 CLANG64 (https://packages.msys2.org/packages/mingw-w64-clang-x86_64-clang-tools-extra). I'm using the MSYS2 CLANG64 GNUstep (https://packages.msys2.org/packages/mingw-w64-clang-x86_64-gnustep-base). I don't have any other environments to test to see if it's the limitation of clangd's support for Objective C++ or not.

[SpartanJ]

I just tested it and I can confirm clangd does support semantic highlighting for Objective C++ (and works on ecode), it seems to be an environment issue from you side. You'll have to ask MSYS2 maintainers, I guess.

[SpartanJ]

Yeah, code completion works too for me, forgot to mention.

[SpartanJ]

But that might fail not because the lack of support but because sometimes clang does not include stdc++ library by default and it's not visible, check that first, it might be a configuration issue (remember clangd needs proper configuration, the compile_commands.json or at least a correct compile_flags.txt config).

[blueberryscone238]

I think it does. If I mouse hover the C++ headers or symbols, it will resolve correctly. It also provides diagnostics for C++ code. It only provide no code completion, for either C++ or Objective C.

[SpartanJ]

I'm not sure how to help you, I have not enough context, but it does look like a configuration issue to me, if everything else works, I don't think is a clangd issue either.

[blueberryscone238]

I found that there is no code completion for Objective C (.m file), either. Everything else works, except code completion.