1.0.29.32 breaks exhaust.impure.lisp :EXHAUST :BINDING-STACK

[Nikodemus Siivola]

On Darwin x86, without threads:

::: Running (:EXHAUST :BINDING-STACK)
Control stack guard page temporarily disabled: proceed with caution
unhandled SB-KERNEL::CONTROL-STACK-EXHAUSTED:
  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.

0: (SB-DEBUG::MAP-BACKTRACE #<CLOSURE (LAMBDA #) {1218A72D}>)[:EXTERNAL]
1: (BACKTRACE 128 #<SYNONYM-STREAM :SYMBOL SB-SYS:*STDERR* {1009F809}>)
2: (SB-DEBUG::DEBUGGER-DISABLED-HOOK
    #<SB-KERNEL::CONTROL-STACK-EXHAUSTED {121895D9}>
    #<unavailable argument>)
3: (INVOKE-DEBUGGER #<SB-KERNEL::CONTROL-STACK-EXHAUSTED {121895D9}>)
4: (ERROR SB-KERNEL::CONTROL-STACK-EXHAUSTED)[:EXTERNAL]
5: (SB-KERNEL::CONTROL-STACK-EXHAUSTED-ERROR)
6: ("foreign function: call_into_lisp")
7: ("foreign function: call_into_lisp_tramp")
8: ("foreign function: scrub_control_stack")
9: (SB-SYS:SCRUB-CONTROL-STACK)
10: (SB-KERNEL::UNSAFE-CLEAR-ROOTS)

[Gábor Melis (melisgl)]

In 1.0.29.37.