__hxcpp_obj_id sometimes returns different values for same object on 64bit

[Maximilian Ruta]

Hi,

today i run into a problem where the ObjectMap class behaves different on C++ and JS, PHP, Neko. I was iterating over  ObjectMap.keys() and ObjectMap.get(key) for each element. But for some reason ObjectMap.get(key) returned null on C++ in this case. After some debugging it turned out that __hxcpp_obj_id returns a different values for the same object in a very special case. I currently not reached the point where i have a minimal example to demonstrate the problem because i cannot reproduce the problem in an minimal example.

Anyone else how has similar problems?

I try to come up with an minimal example tomorrow.

Thanks

Max

[Maximilian Ruta]

Ok i have an minimal example now. Its there: https://github.com/xunio/core/blob/master/test/src/io/xun/test/unit/haxe/ds/TestObjectMap.hx

Correct version to the time of this post: https://github.com/xunio/core/blob/81962f17ea408dc1567ab140e66449326abe7406/test/src/io/xun/test/unit/haxe/ds/TestObjectMap.hx

[Luca]

Testing his example with most recent hxcpp/haxe on linux x64 and same error.

Changing the _map var to be a local instead of member field 'fixes' the problem, which is always fun...

[Maximilian Ruta]

I updated the testcase. In this case _map is a local var not a member field.

https://github.com/xunio/core/blob/fea58ce1d3fbbeeceab1e6cad38459ba5846f407/test/src/io/xun/test/unit/haxe/ds/TestObjectMap.hx

The bug still appears.

Where sould i report the bug?

[Maximilian Ruta]

I reported the bug:

https://github.com/HaxeFoundation/haxe/issues/2149