FogBugz (Case [Issue]11249) Debugging - Fuel out stack fails

A FogBugz case was opened by AndreiChis.

Case ID:      11249
Title:        Fuel out stack fails
Status:       Work Needed
Category:     Bug
Project:      Debugging
Area:         Misc
Priority:     5 - Fix If Time
Milestone:    Pharo3.0: 30/03/2014
Assigned To:  Everyone

URL:          https://pharo.fogbugz.com/default.asp?11249

Fueling out the stack fails with this exception:
FLObjectNotFound: Serialization error. Unexpected reference to a LinkedList(a Process in [ delaySemaphore wait ] in Delay>>wait a Process in [ delaySemaphore wait ] in Delay>>wait) in the graph. This usually happens when the graph changes during serialization.

Despite this error, the stack is serialized, however when loading it into the image the processes are also loaded, in an invalid state, which leads to strange errors.

To see the error add 'Transcript show: err printString; cr.' to DebugSession>>serializeStack in the do: block from the last line, and then choose to export the stack from the context menu of the stack.

This might happen because of the refresh processes from the inspectors.
However I'm not sure why Fuel wants to serialize them.


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