output file unexpectedly deleted

[Keith]

When a stream is opened for output, the file may be unexpectedly deleted. I've found that I can reproduce the error with an example from the hyperspec:

From Function DELETE-FILE:

(with-open-file (s "delete-me.text" :direction :output :if-exists :error)
   (delete-file s))

couldn't delete /home/deox/delete-me.text:
  No such file or directory
   [Condition of type SB-INT:SIMPLE-FILE-ERROR]

I would expect this to return T, as described in the hyperspec.

SBCL 1.0.30

Linux 2.6.28-14-generic x86_64 GNU/Linux

(:SB-BSD-SOCKETS-ADDRINFO :CL-FAD :HUNCHENTOOT-SBCL-DEBUG-PRINT-VARIABLE-ALIST
 :ASDF :SB-THREAD :ANSI-CL :COMMON-LISP :SBCL :SB-DOC :SB-TEST :SB-LDB
 :SB-PACKAGE-LOCKS :SB-UNICODE :SB-EVAL :SB-SOURCE-LOCATIONS
 :IEEE-FLOATING-POINT :X86-64 :UNIX :ELF :LINUX :GENCGC
 :STACK-GROWS-DOWNWARD-NOT-UPWARD :C-STACK-IS-CONTROL-STACK :LINKAGE-TABLE
 :COMPARE-AND-SWAP-VOPS :UNWIND-TO-FRAME-AND-CALL-VOP :RAW-INSTANCE-INIT-VOPS
 :STACK-ALLOCATABLE-CLOSURES :STACK-ALLOCATABLE-VECTORS
 :STACK-ALLOCATABLE-LISTS :STACK-ALLOCATABLE-FIXED-OBJECTS :ALIEN-CALLBACKS
 :CYCLE-COUNTER :COMPLEX-FLOAT-VOPS :FLOAT-EQL-VOPS :INLINE-CONSTANTS
 :OS-PROVIDES-DLOPEN :OS-PROVIDES-PUTWC :OS-PROVIDES-SUSECONDS-T)