full call to SB-C::%INSTANCE-TYPEP in code calling MISMATCH

[Paul F. Dietz]

(lambda (p)
  (let ((i 0))
    (mismatch (progn (incf i) "abcdef")
              (progn (incf i) "abcdef")
              :key (progn (incf i) #'identity)
              :test (progn (incf i) #'equal)
              :start1 (progn (incf i) 1)
              :start2 (progn (incf i) 1)
              :end1 (progn (incf i) 4)
              :end2 (probe-file p)
              :from-end i
              )))

==>

full call to SB-C::%INSTANCE-TYPEP
This is probably a bug in SBCL itself. (Alternatively, SBCL
might have been corrupted by bad user code, e.g. by an undefined
Lisp operation like (FMAKUNBOUND 'COMPILE), or by stray pointers
from alien code or from unsafe Lisp code; or there might be a
bug in the OS or hardware that SBCL is running on.) If it seems
to be a bug in SBCL itself, the maintainers would like to know
about it. Bug reports are welcome on the SBCL mailing lists,
which you can find at <http://sbcl.sourceforge.net/>.
   [Condition of type SB-INT:BUG]

Restarts:
 0: [ABORT] Exit debugger, returning to top level.

Backtrace:
  0: (SB-INT:BUG "full call to ~S" SB-C::%INSTANCE-TYPEP)
  1: (SB-C::PONDER-FULL-CALL #<SB-C::COMBINATION :FUN #<SB-C::REF :LEAF #<SB-C::GLOBAL-VAR :%SOURCE-NAME SB-C::%INSTANCE-TYPEP :TYPE #1=#<SB-KERNEL:FUN-TYPE #> :DEFINED-TYPE #1# :WHERE-FROM :DECLARED :KIN..
  2: (SB-C::IR2-CONVERT-FULL-CALL #<SB-C::COMBINATION :FUN #<SB-C::REF :LEAF #<SB-C::GLOBAL-VAR :%SOURCE-NAME SB-C::%INSTANCE-TYPEP :TYPE #1=#<SB-KERNEL:FUN-TYPE #> :DEFINED-TYPE #1# :WHERE-FROM :DECLARED..
  3: (SB-C::IR2-CONVERT-BLOCK #<SB-C::CBLOCK 1 :START c1 {100B79E203}>)
  4: (SB-C:IR2-CONVERT #<SB-C:COMPONENT :NAME (LAMBDA (P)) {100B7A6843}>)
  5: (SB-C::%COMPILE-COMPONENT #<SB-C:COMPONENT :NAME (LAMBDA (P)) {100B7A6843}>)

[Stas Boukarev (stassats)]

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