Is there an equivalent of link_warning(symbol) for C++?

Question

Is it possible to define a C++ class method that would compile cleanly but produce a warning message when used, in a way similar to the unimplemented C library functions? Something like:

int MyClass::frobnicate() 
{
    link_warning(frobnicate, "function not implemented");
    return 0;
}

An __attribute__((deprecated)) or a newer [[deprecated]] attribure has the right functionality (that's what I will use if there's no other option), but I would like to avoid telling the user that frobnicate is deprecated when it's really just cannot be implemented due to XYZ reason.

A C code example (from glibc):

#define link_warning(symbol, msg) \
  __make_section_unallocated (".gnu.warning." #symbol) \
  static const char __evoke_link_warning_##symbol[]     \
  __attribute__ ((used, section (".gnu.warning." #symbol __sec_comment))) \
  = msg;

The warning this macro gives looks like the following (here's an example of code using it):

/path/to/file.o: In function `symbol':

/path/to/file.c:line: warning: msg

A naive link_warning(MyClass::frobnicate, "function not implemented") doesn't seem to work, and finding out and using decorated names seems hacky and unportable (and I'm not sure it will actually work).