assertion window of death!

C++ coding using Panda3D
1

In windows using 1.5.1 I think one of my testers gets this error
what can be the problem?

2

Bad build? We’re not sure. I’ve already recommended to Josh that he compiles out this code for subsequent releases. Maybe he already did for 1.5.2.

David

3

oh ok drwr but what does this do? We like as much diagnostics of bad things to come.

4

It means the low-level allocation watcher has counted more free’s than malloc’s. Most likely, though, it just means a bug in the allocation watcher, not in the overall system.

David

5

I have the same problem with panda 1.5.2.

6

Is there anything known about this? I’m working on collada and am suddenly stumbling at the same error.
Both loader.loadModel, pview and dae2egg give this error at the end:

dae2egg: dtool/src/dtoolbase/memoryHook.cxx:325: virtual void MemoryHook::heap_free_array(void*): Assertion `(int)size <= _total_heap_array_size' failed.
Aborted

The odd thing is that it doesn’t show until after the converter finished – it converts fine, it just throws this when it’s finished.
My last build worked fine, but that was at makepanda, since my last build I added lotsa code and dropped makepanda for ppremake.
Is this just a plain bug in Panda3D? Can I work around this? Does anybody maybe have a suggestion where to look? Since I changed a lot of code, it’s impossible to trace this error without some kind of direction.

7

We also still getting this from time to time. The solution so far been to delete the tmp cache for temporary bam files.

8

If you’re building your own Panda, you can turn off the code in question by undefining:

#define ALTERNATIVE_MALLOC

in Config.pp, or whatever the equivalent is in makepanda.

David

9

Thanks! I’m using ppremake, and will try it out next time I find a few hours to recompile panda. (Sidenote: Makepanda doesn’t bother with that define at all.)

Oh, btw, does changing this to rebuild Panda3D entirely from scratch, because everything depends on it or so? Can I just re-make dtoolbase or express or so or the entire tree?

10

Nope, sorry, it’s a full rebuild. This is very low-level stuff.

David