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

[Daniele Di Proietto]

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

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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/

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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

[Alessandro Pignotti (a-pignotti)]

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.