Smalltalk stack looks okay; at least there are no strange repetitions that might head into an overflow-ish out-of-memory situation.
Here are some interesting stack frames: ``` 0x7ffd3b660328 M ClassForTestToBeDeleted91>fuelAccept: 0x2ca5c28: a(n) ClassForTestToBeDeleted91 ... 0x7ffd3b681f20 M FLCurrentContext class(DynamicVariable class)>value:during: 0x6a1ec98: a(n) FLCurrentContext class ... 0x7ffd3b682280 I FLHookedSubstitutionTest>testClassWithCachedValueByNil 0x6f359e8: a(n) FLHookedSubstitutionTest ... ```
Here are some wild guesses: - Maybe some issues in the area of class creation/deletion? - Maybe some issues with our recent changes to process termination and #ensure: blocks? ("Most recent primitives" shows #findNextHandlerContextStarting, #findNextUnwindContextUpTo:)