gd works, gi does not, what am I missing

[laoshaw]

with ctags I can ctrl-] to jump to implementation of the function, with coc.nvim I can only do gd to jump to definition, but gi does not work for me, what am I missing? do I need a compile_commands.json prebuilt at the topdir or a .clangd with all local directories added? Thanks.

[fannheyward]

Language server issue, clangd didn't returns result for implementation request.

[laoshaw]

this is for C, I am really surprised clangd can not find implementation of functions. thanks!