Strange behavior in c++ when semantic_token_resolution is enabled

[stevalkr]

Make sure you have done the following

• Updated to the latest version of blink.cmp
• Searched for existing issues and documentation (try <C-k> on https://cmp.saghen.dev)

Bug Description

class Class {
 public:
  void fn(int);
  void fn_a(int);
};

int main() {
  int a;
  auto cc = Class{};
  cc.fn_a(a()); // `()` is auto added after `a`
}

cc.fn(|): accept a doesn't add brackets
c.fn_a(|) (rename cc): accept a doesn't add brackets
cc.fn_a(|): accept a does add brackets

The behavior is strange. If you can’t reproduce the issue, try renaming the variable cc to a longer name.

Disabling the semantic_token_resolution option could resolve this problem.

clangd --version

clangd version 16.0.6
Features: mac
Platform: aarch64-apple-darwin24.2.0

minimal init:

-- Run with `nvim -u repro.lua`

vim.env.LAZY_STDPATH = '.repro'
load(vim.fn.system('curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua'))()

---@diagnostic disable-next-line: missing-fields
require('lazy.minit').repro({
  spec = {
    {
      'saghen/blink.cmp',
      -- build = 'cargo build --release',
      version = '*',
      opts = {}
    },
    {
      'neovim/nvim-lspconfig',
      config = function()
        local lspconfig = require('lspconfig')
        lspconfig['clangd'].setup({
          capabilities = require('blink.cmp').get_lsp_capabilities(),
        })
      end,
    },
  },
})

Relevant configuration

neovim version

NVIM v0.11.0-dev-1417+g487c48ec86-Homebrew Build type: Release LuaJIT 2.1.1736781742 Run "nvim -V1 -v" for more info

blink.cmp version

b6f11a0

[ngpong]

I have the same problem and here is some additional information:

1. i can't quite reproduce it in a clean project, only in project at my work.
2. the problem is solved when I add a .clangd config file to the project, very strange.
3. and of course, disabling the semantic_token_resolution config also solves the problem.