Re: uimenu implementation, 2nd version [build failure on MacOS X]

[Kai Habel]

-------- Original-Nachricht --------
> Datum: Tue, 26 Oct 2010 12:32:33 +0800
> Von: Ben Abbott <address@hidden>
> An: Ben Abbott <address@hidden>
> CC: Kai Habel <address@hidden>, "John W. Eaton" <address@hidden>, GNU Octave 
> <address@hidden>
> Betreff: Re: uimenu implementation, 2nd version [build failure on MacOS X]

> On Oct 26, 2010, at 11:15 AM, Ben Abbott wrote:
> 
> > On Oct 26, 2010, at 1:03 AM, Kai Habel wrote:
> > 
> >> Ok, I have pushed an updated Changeset, with the uimenu implementation
> for the fltk backend.
> >> 
> >> Kai
> > 
> > With this change, my buiid is failing
> > 
> 
> /* snip */
> 
> > DLD-FUNCTIONS/fltk_backend.cc: In member function 'Matrix
> fltk_uimenu::find_uimenu_children(T&) const':
> > DLD-FUNCTIONS/fltk_backend.cc:339: error: request for member
> 'get_position' in
> 'dynamic_cast<uimenu::properties&>(kidgo.graphics_object::get_properties())', 
> which is of non-class type 'uimenu::properties&'
> > DLD-FUNCTIONS/fltk_backend.cc:341: error: request for member
> 'get_fltk_label' in
> 'dynamic_cast<uimenu::properties&>(kidgo.graphics_object::get_properties())', 
> which is of non-class type 'uimenu::properties&'
> > DLD-FUNCTIONS/fltk_backend.cc: In member function 'Matrix
> fltk_uimenu::find_uimenu_children(T&) const [with T = uimenu::properties]':
> > DLD-FUNCTIONS/fltk_backend.cc:360:   instantiated from here
> > DLD-FUNCTIONS/fltk_backend.cc:340: warning: unused variable 'lbl'
> > DLD-FUNCTIONS/fltk_backend.cc: In member function 'Matrix
> fltk_uimenu::find_uimenu_children(T&) const [with T = figure::properties]':
> > DLD-FUNCTIONS/fltk_backend.cc:554:   instantiated from here
> > DLD-FUNCTIONS/fltk_backend.cc:340: warning: unused variable 'lbl'
> > make[3]: ***
> [DLD-FUNCTIONS/DLD_FUNCTIONS_fltk_backend_la-fltk_backend.lo] Error 1
> > make[2]: *** [check] Error 2
> > make[1]: *** [check-recursive] Error 1
> > make: *** [check] Error 2
> > 
> > Ben
> 
> The lines of fltk_backend.cc which produce the error are 
> 
>  335             if (kidgo.isa ("uimenu"))
>  336               {
>  337                 uimenu_childs(k) = uimenu_childs(ii);
>  338                 pos(k++) =
>  339                   dynamic_cast<uimenu::properties&>
> (kidgo.get_properties ()).get_position ();
>  340                 std::string lbl =
>  341                   dynamic_cast<uimenu::properties&>
> (kidgo.get_properties ()).get_fltk_label ();
>  342               }
> 
> Perhaps this is related to this is a bug in the version of gcc I'm
> running?
> 
>       http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34364
> 
> $ gcc --version
> i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5664)
> Copyright (C) 2007 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
> PURPOSE.
> 
> To allow the build to continue, I commented out this if-block, and didn't
> encounter any more errors (and as expected the uimenu doesn't function).
> 
> Ben
> 

Hello Ben,

yes it seems you have triggered the bug described in the link. I will try to 
find a workoround without changing my internal interfaces later today.

Kai

P.S. Is there a more recent gcc suite available from Apple/for MacOS for you to 
test with?