[CM] GC Called recursively

[Woody Douglass]

Hi all,

I've got a problem where the GC seems to be calling itself recursively.
Are there rules about what can and can't be done in a 'mark' function?
i'm debugging this by turning "S7_DEBUGGING" on and adding a bunch of
printfs to trace the gc process, is there a better strategy here?

Thanks,
Woody Douglass