[Bug c++/28901] 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

--- Comment #5 from Martin Sebor <msebor at gmail dot com> ---
Here you go:

(gdb) p (llvm::Value*)CI
$1 = (llvm::Value *) 0x986a2a0
(gdb) p errs()                  
Overloaded function instance llvm::errs() # of parms 0
...Badness of length : {0, 0}
Overload resolution champion is 0, ambiguous? 0
$2 = (llvm::raw_fd_ostream &) @0x979fbc0: {<llvm::raw_pwrite_stream> =
{<llvm::raw_ostream> = {
      _vptr$raw_ostream = 0x96d2698 <vtable for llvm::raw_fd_ostream+16>, 
      Kind = llvm::raw_ostream::OStreamKind::OK_OStream, OutBufStart = 0x0, 
      OutBufEnd = 0x0, OutBufCur = 0x0, ColorEnabled = true, 
      TiedStream = 0x0, 
      BufferMode = llvm::raw_ostream::BufferKind::Unbuffered, 
      static BLACK = llvm::raw_ostream::Colors::BLACK, 
      static RED = llvm::raw_ostream::Colors::RED, 
      static GREEN = llvm::raw_ostream::Colors::GREEN, 
      static YELLOW = llvm::raw_ostream::Colors::YELLOW, 
      static BLUE = llvm::raw_ostream::Colors::BLUE, 
      static MAGENTA = llvm::raw_ostream::Colors::MAGENTA, 
      static CYAN = llvm::raw_ostream::Colors::CYAN, 
      static WHITE = llvm::raw_ostream::Colors::WHITE, 
      static SAVEDCOLOR = llvm::raw_ostream::Colors::SAVEDCOLOR, 
      static RESET = llvm::raw_ostream::Colors::RESET}, <No data fields>}, 
  FD = 2, ShouldClose = false, SupportsSeeking = false, 
  IsRegularFile = false, HasColors = {Storage = {{empty = 0 '\000', 
        value = false}, hasVal = false}}, EC = {_M_value = 0, 
    _M_cat = 0x7ffff7eb3160 <(anonymous namespace)::system_category_instance>}, 
  pos = 207}
(gdb) p $1->print($2, false)
Overloaded method instance llvm::Value::print(llvm::raw_ostream&, bool) const,
# of parms 3
...Badness of length : {0, 0}
...Badness of arg 1 : {1, 1}
...Badness of arg 2 : {100, 0}
...Badness of arg 3 : {0, 0}
Overload resolution champion is 0, ambiguous? 0
Overloaded method instance llvm::Value::print(llvm::raw_ostream&,
llvm::ModuleSlotTracker&, bool) const, # of parms 4
...Badness of length : {100, 0}
...Badness of arg 1 : {1, 1}
...Badness of arg 2 : {100, 0}
...Badness of arg 3 : {100, 0}
Overload resolution champion is 0, ambiguous? 0
Cannot resolve method llvm::Value::print to any overloaded instance

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