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Crash when inserting a node in a looped node structure
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Make a looped node structure as in the attached file. Drop some node (that have inputs and outputs) on a sockets connection. Blender will crash.
I think the problem is in the code of node auto layout. Please keep the ability to make cycled nodes. This is a key capability required for Blend4Web Logic Nodes and possibly for Sverchok.

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Alexander Romanov (a.romanov) raised the priority of this task from to Needs Triage by Developer.
Alexander Romanov (a.romanov) updated the task description. (Show Details)
Sergey Sharybin (sergey) lowered the priority of this task from Needs Triage by Developer to Confirmed, Medium.Sep 17 2015, 11:53 AM

just as boolean to allow cycling in layouts. Recursions for some nodes to be alowed.
How to restrict other nodes to crash? Maybe add flag in API to allow some node to keep cycled inputs? it may work as flag in API.