-/* The previous frame's analyzer returns an invalid result
- from this_id.
-
- FIXME drow/2006-08-16: This is how GDB used to indicate end of
- stack. We should migrate to a model where frames always have a
- valid ID, and this becomes not just an error but an internal
- error. But that's a project for another day. */
+/* This is no longer used anywhere, but it's kept because it's exposed
+ to Python. This is how GDB used to indicate end of stack. We've
+ now migrated to a model where frames always have a valid ID. */