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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