[Swig-devel] [ swig-Bugs-1620240 ] reinterpret_cast misused with directors

[SourceForge.net <no...@so...>]

Bugs item #1620240, was opened at 2006-12-21 13:35
Message generated for change (Comment added) made by gga73
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=101645&aid=1620240&group_id=1645

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: ruby
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Gonzalo Garramuno (gga73)
Assigned to: cfis (cfis)
Summary: reinterpret_cast misused with directors

Initial Comment:
Currently, SWIG is casting classes using:

  arg1 = reinterpret_cast< fltk::Widget * >(argp1);
  director = dynamic_cast<Swig::Director *>(arg1);

This is incorrect when directors are used, as it can lead to incorrect behavior of a multi-inheritance class.
Proper casting should be:
  arg1 = static_cast< fltk::Widget * >(argp1);
  director = dynamic_cast<Swig::Director *>(arg1);

Otherwise, this results in incorrect casting behavior on x86-64 machines under Linux.


----------------------------------------------------------------------

>Comment By: Gonzalo Garramuno (gga73)
Date: 2006-12-21 19:55

Message:
Logged In: YES 
user_id=961712
Originator: YES

Find attached a .zip file that shows the problem, on x86-64 machines.

Rectangle->x() returns incorrect information due to improper
address/casting.

File Added: BUG.zip

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=101645&aid=1620240&group_id=1645