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[Alessandro Pignotti <1297966@xxxxxxxxxxxxxxxxxx>]

I've identified the bug. The issue is that constant initialized class
instances do not have correct class metadata for up/down casting
support. Changed the title accordingly.

** Summary changed:

- Allocation object (which uses inheritance) statically causes pointer not to work 
+ Constant initialized class instances do not have correct class metadata for up/down casting support

** Changed in: duetto
       Status: New => Confirmed

** Changed in: duetto
   Importance: Undecided => Medium

** Changed in: duetto
     Assignee: (unassigned) => Alessandro Pignotti (a-pignotti)

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https://bugs.launchpad.net/bugs/1297966

Title:
  Constant initialized class instances do not have correct class
  metadata for up/down casting support

Status in Duetto: C++ for the Web:
  Confirmed

Bug description:
  I have a bug to report, but unfortunately I am still not able to
  reproduce it with a simple test case, so here it goes.

  This revision of my software works fine with duetto:
  https://github.com/ddiproietto/nontetris/commit/25b2dab412aaa71eeed4a9ec4acdb60cd19110f7

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

  However, the next commit
  https://github.com/ddiproietto/nontetris/commit/172255ea9ff9f0c58980066d1b2dc6dce9cc9d59
  introduces a weird bug: as soon as Box2D tries to report a collision the game stops working and the browser reports a javascript runtime error about Llistener.o not being defined in this line:

  var tmp4725 = (Llistener.d[Llistener.o].a0);

  
  You can see the problem in action here (when a piece reach a wall or the ground):

  http://allievi.sssup.it/jacopone/cnontetris-testing/

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

  To avoid the problem I found an ugly simple fix for my code

  https://github.com/ddiproietto/nontetris/commit/7879a417a98128090a5e3e27b783ca4f9f94ca01

  that, surprisingly enough, works.

  I'm sorry I wasn't able to investigate this further

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