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...t best. > Implementing a GC is actually quite new to me, so perhaps that's where I'm getting confused. Anyways, suppose I have a function that has a pointer to a GC-tracked object as a parameter and a collection can be triggered from this function, e.g. > > object* > f(object *some_obj) > { > object __attribute__((gcroot)) *new_obj; > new_obj = allocate_object(); > // A collection could have been executed at this point, > // and so some_obj might have become invalid > new_obj->child = some_obj; > return new_obj; > } To ensure that *so...