Graph execution sometimes stuck in infinite loop

[rainman110]

I have an intelligraph with only dummy nodes. These nodes are not shown in the graph. So far okay.

Now I add other non-dummy nodes (e.g. double input and double display). When I now connect these and execute the graph, GTlab hangs forever.

Update: This is not related to dummy nodes but can be reproduced with out it as well. See comment below https://github.com/dlr-gtlab/intelligraph-module/issues/203#issuecomment-2470445020

[rainman110]

It seems, that this for loop

https://github.com/dlr-gtlab/intelligraph-module/blob/34515014b6850ab3d780585a2a010100f500bedc/src/intelli/private/graphexecmodel_impl.h#L1415

keeps iterating forever.

[rainman110]

I don' understand the logic of the loop. After each iteration, the loop iterator is set to the beginning. The node array is not necessarily shrinking, so here's our endless loop.

[mariusalexander]

I dont see why dummy nodes should cause an error here since these should not be registered as nodes in the graph. But indeed the loop looks off, Ill investigate

[rainman110]

I am on it. In fact no dummy nodes are required. Here are some steps to reproduce:

1. Create a new intelli-graph
2. Set the graph on auto-execution (i.e. press play button)
3. Create a "Bool Input" node
4. Create a "logic display" node
5. Connect them
6. Toggle the bool input

Now, I am stuck in a infinite for loop

[rainman110]

https://github.com/user-attachments/assets/9673c34a-0aec-460d-a486-fb875f6474ba

[mariusalexander]

I can reproduce the issue. Thank you!

[rainman110]

I was thinking, that mutating a vector while iterating it is UB. But chatgpt convinced me otherwise, so your new approach seems to be valid.

[mariusalexander]

I was thinking, that mutating a vector while iterating it is UB. But chatgpt convinced me otherwise, so your new approach seems to be valid.

You have some confidence in ChatGPT😜