[Bug c++/28901] New: unable to resolve function overloads involving inheritance

["msebor at gmail dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=28901

            Bug ID: 28901
           Summary: unable to resolve function overloads involving
                    inheritance
           Product: gdb
           Version: 11.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
          Assignee: unassigned at sourceware dot org
          Reporter: msebor at gmail dot com
  Target Milestone: ---

The following test case shows that GDB 11.1 is unable to perform basic overload
resolution involving derivation.  This limitation prevents, for example,
calling output functions when debugging LLVM.  The LLVM debugger, lldb, handles
this without a problem.

I'm using GNU gdb (GDB) Fedora 11.1-5.fc35.

$ cat t.C && g++ -g3 t.C && gdb -batch -nx -ex "break main" -ex run -ex "print
f (x, b)" a.out 
struct A { };
struct B: A { };

struct X { };
struct Z { };

void f (X&, A&) { }
void f (Z&, B&) { }

B b;
X x;

int main ()
{
  f (x, b);
}

Breakpoint 1 at 0x401128: file t.C, line 15.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Breakpoint 1, main () at t.C:15
15        f (x, b);
Cannot resolve function f to any overloaded instance

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