使用 \\n 而不是 endl 和 -std=c++2a 时奇怪的 clangd 崩溃

Question

This is the reference source file

#include <iostream>
int main() {
    int x = 7;
    std::cout << x << '\n';
}

If I open a line before the line with cout and write std:: I correctly see YCM's semantic cmpletion popup; if I do the same after the line with cout , I get a ResponseAbortedException: Response Aborted error.

:YcmDebugInfo gives

Printing YouCompleteMe debug information...
-- Resolve completions: Up front
-- Client logfile: /tmp/ycm_fiumsvcv.log
-- Server Python interpreter: /usr/bin/python3
-- Server Python version: 3.8.6
-- Server has Clang support compiled in: True
-- Clang version: clang version 10.0.0 (https://github.com/ycm-core/llvm 038587147cf2f97d1c3e677042f69560c65b5bea)
-- Extra configuration file found and loaded
-- Extra configuration path: /home/enrico/.ycm_extra_conf.py
-- C-family completer debug information:
--   Clangd not running
--   Clangd executable: ['/home/enrico/.vim/plugged/YouCompleteMe/third_party/ycmd/third_party/clangd/output/bin/clangd', '-cross-file-rename', '-header-insertion-decorators=0', '-resource-dir=/home/enrico/.vim/plugged/YouCom
pleteMe/third_party/ycmd/third_party/clang/lib/clang/10.0.0', '-limit-results=500']
--   Clangd logfiles:
--     /tmp/clangd_stderryqofwzop.log
--   Clangd Server State: Dead
--   Clangd Project Directory: /home/enrico
--   Clangd Settings: {}
--   Clangd Compilation Command: ['clang-tool', '-x', 'c++', '-std=c++2a', '-Wall', '-Wextra', '-Werror', '/home/enrico/deleteme.cpp']
-- Server running at: http://127.0.0.1:42807
-- Server process ID: 25037
-- Server logfiles:
--   /tmp/ycmd_42807_stdout_9pmpk9zp.log
--   /tmp/ycmd_42807_stderr_iat9y0gn.log

This is a screencast of the issue.

Answer 1

My suggestions:

• Upgrade to a newer clangd. The latest released version is 11, and there are even newer weekly snapshot releases available on Github .

• If the crash persists, run clangd with --log=verbose , and file a clangd issue with the log attached.