- "Control stack exhausted (no more space for function call frames). This is probably due to heavily nested or infinitely recursive function calls, or a tail call that SBCL cannot or has not optimized away."))))
+ ;; no pretty-printing, because that would use a lot of stack.
+ "Control stack exhausted (no more space for function call frames).
+This is probably due to heavily nested or infinitely recursive function
+calls, or a tail call that SBCL cannot or has not optimized away.
+
+PROCEED WITH CAUTION."))))