[Octave-bug-tracker] [bug #50640] display function not passing arguments to overloaded version of function

[Rik]

Update of bug #50640 (project octave):

                  Status:                    None => Confirmed              
                 Summary: audiorecorder() crashes when invoked without
semicolon => display function not passing arguments to overloaded version of
function

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Follow-up Comment #1:

Confirmed.

Something is wrong with the interaction between the display routine (written
in C++ at libinterp/corefcn/pr-output.cc) and the overloaded display routine
for an audiorecorder object which is at
scripts/audio/@audiorecorder/display.m.

If I set a breakpoint in display.m, I see that this calling method works.


rec = audioplayer();
display (rec)


This method fails


rec = audioplayer();
rec


The display.m function is called in this case, but the class object which is
expected to be the first argument to the function is not passed on.  The first
part of display.m is:


function display (recorder)

  if (nargin != 1)
    print_usage ();
  endif


In the failing case, nargin == 0 and Octave calls print_usage() to emit an
error.


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