C++ indexing issue

[chscf]

Good day,

I'm having issues with the CDT indexer and sigc++3. The problem is the following:

class MyClass
{
  ...
  Glib::Dispatcher m_some_signal;
  void some_callback(void);
  ...
}

Now I connect the signal with the callback:

m_some_signal.connect(sigc::mem_fun(*this, &MyClass::some_callback));

The CDT indexer is not able to resolve sigc::mem_fun correctly, I get an error like this

Invalid arguments '
Candidates are:
14 14 sigc::mem_functor 2 7 133 1 #0 8 *2 0 #1 8 *2 1 3  0 mem_fun(#0 (#1::*)(#2(...) ...)volatile)
14 14 sigc::mem_functor 2 7 165 1 #0 8 *2 0 #1 8 *2 1 3  0 mem_fun(#0 (#1::*)(#2(...) ...)const volatile)
14 14 sigc::bound_mem_functor 2 7 5 1 #0 8 *3 0 #1 8 *3 2 35 sigc::mem_fun 0 0 3  0 mem_fun(#1 &, #0 (#2::*)(#3(...) ...))
14 14 sigc::mem_functor 2 7 5 1 #0 8 *2 0 #1 8 *2 1 3  0 mem_fun(#0 (#1::*)(#2(...) ...))
14 14 sigc::mem_functor 2 7 37 1 #0 8 *2 0 #1 8 *2 1 3  0 mem_fun(#0 (#1::*)(#2(...) ...)const)
14 14 sigc::bound_mem_functor 2 7 37 1 #0 8 *3 0 #1 8 *3 2 35 sigc::mem_fun 0 0 3  0 mem_fun(#1 &, #0 (#2::*)(#3(...) ...)const)
14 14 sigc::bound_mem_functor 2 7 133 1 #0 8 *3 0 #1 8 *3 2 35 sigc::mem_fun 0 0 3  0 mem_fun(#1 &, #0 (#2::*)(#3(...) ...)volatile)
14 14 sigc::bound_mem_functor 2 7 165 1 #0 8 *3 0 #1 8 *3 2 35 sigc::mem_fun 0 0 3  0 mem_fun(#1 &, #0 (#2::*)(#3(...) ...)const volatile)
'

However, the arguments to sigc::mem_fun are perfectly valid...
This problem occured after switching from sigc++2 to sigc++3. When I use sigc++2 the indexer does not show such errors.

I wonder if I have to change any indexer settings (or something else in CDT) to get rid of this error (I'm somehow out of ideas, google didn't help either...).

Any help would be appreciated!

Thanks,
Christian

[jonahgraham]

I wonder if this is a problem with newer standards of C++. Eclipse CDT's default indexer has incomplete support for the latest standards and this looks quite a lot like other issues in that category.

Going forward Eclipse CDT is looking at using LSP and you can try it out today to see if you get good results with it. See https://github.com/eclipse-cdt/cdt/blob/main/NewAndNoteworthy/CDT-12.0.md#cdt-lsp-clangd-support as the entry point to read more.