[Bug c++/91465] New: unexpected expression of kind overload (ICE)

[cuzdav at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91465

            Bug ID: 91465
           Summary: unexpected expression of kind overload  (ICE)
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: cuzdav at gmail dot com
  Target Milestone: ---

This code results in an ICE:

In member function 'Destination Bar<T>::baz(Source)':

internal compiler error: unexpected expression 'foo' of kind overload
              return Destination{foo(aLowValue)};
                                                ^

// See it LIVE!  https://godbolt.org/z/42c_Ll
enum class Destination  {};
enum class Source  {};

Destination foo(Source value) { return Destination{}; }
Destination foo(double value) { return Destination{}; }

template <typename T>
struct Bar {
    Destination baz(Source aLowValue) {
        return Destination{foo(aLowValue)}; // <<<< HERE
    }
};


Bug appears in 9.1 in c++17 (and up) in all higher g++ versions as well.  OK if
c++14 or lower, and OK if older g++.