Cannot suppress driver diagnostics

[sam-mccall]

The suppression filter is added after we run the driver, so driver diagnostics (e.g. drv_unknown_argument) cannot be suppressed.

Discussed in #1135

^{Originally posted by alexcocinda May 2, 2022}
I am getting these two errors, but my project builds fine:

Unknown argument: '-forward-unknown-to-host-compiler'                       
[clang: drv_unknown_argument]                                               
───────────────────────────────────────────────────────────
Unsupported option '--generate-code=arch=compute_75,code=[compute_75,sm_75]'
[clang: drv_unsupported_opt]                                                

I tried to disable them with the following .clangd config:

CompileFlags:
  Add:
    - --cuda-path=/usr/local/cuda-11.4
    - --cuda-gpu-arch=sm_75
    - -L/usr/local/cuda-11.4/lib64
    - -I/usr/local/cuda-11.4/include
Diagnostics:
  Suppress:
    - drv_unknown_argument
    - drv_unsupported_opt

I am running on Ubuntu 20.04 with clangd 14.0.0. Am I missing something?

[cilence]

I have the same problem

[AtomicVar]

From clangd/vscode-clangd#327, it said we can suppress these by adding to your .clangd file:

CompileFlags:
  Remove:
    - -forward-unknown-to-host-compiler
    - --generate-code*

[matessd]

I met the same question because one of my compile_commands.json is generated by gcc -fno-lifetime-dse, which is not supported by clangd. And I also tried to add

CompileFlags:
  Remove: -fno-lifetime-dse

in .clangd but it doesn't work.

Finally, I solved it by creating another .clangd in sub-project directory and adding Remove: -fno-lifetime-dse

So for me, it's because I use If: PathMatch in .clangd to support multiple complie_commands.json, which makes clangd can't deal with arg Remove in root .clangd. If anyone is facing the same situation, you can try this method.

[Thrrreeee]

I met the same question because one of my compile_commands.json is generated by gcc -fno-lifetime-dse, which is not supported by clangd. And I also tried to add

CompileFlags:
  Remove: -fno-lifetime-dse

in .clangd but it doesn't work.

Finally, I solved it by creating another .clangd in sub-project directory and adding Remove: -fno-lifetime-dse

So for me, it's because I use If: PathMatch in .clangd to support multiple complie_commands.json, which makes clangd can't deal with arg Remove in root .clangd. If anyone is facing the same situation, you can try this method.

I meet with the same question, but I can not find where my .clang is. Could you help me?
My error is as follows:

[HighCommander4]

.clangd is a configuration file you can create in the project's root directory, see https://clangd.llvm.org/config.html#files