Comment 4 for bug 571581

After applying this patch, the next two cases

(expt 0.0 0.0)
(expt 0 0.0)

signal

debugger invoked on a SB-KERNEL::ARGUMENTS-OUT-OF-VALID-DOMAIN in thread #<THREAD
                                                                           "initial thread" RUNNING
                                                                           {A9EB801}>:
  arithmetic error SB-KERNEL::ARGUMENTS-OUT-OF-VALID-DOMAIN signalled
Operation was EXPT, operands (0 0.0).
See also:
  The ANSI Standard, Function EXPT

Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name):
  0: [ABORT] Exit debugger, returning to top level.