When compiling a compiler macro, the &whole form seems to be referenced even if
it is not:
----(s.lisp)------------------------------------------------------------
(DEFUN IMPLODE-STRING (CHAR-SEQ)
"
RETURN: A new string containing the characters in the sequence CHAR-SEQ.
"
(MAP 'STRING (FUNCTION CHARACTER) CHAR-SEQ))
(DEFINE-COMPILER-MACRO IMPLODE-STRING (&WHOLE FORM CHAR-SEQ)
"
RETURN: An optimized form for compiled code.
NOTE: Unfortunately clisp does to take into account compiler-macros
even when compiling...
"
(DECLARE (IGNORE FORM))
(WITH-GENSYMS (SEQ)
`(LET ((,SEQ ,CHAR-SEQ))
(TYPECASE ,SEQ
(STRING (COPY-SEQ ,SEQ))
(LIST (DO ((RESULT (MAKE-STRING (LENGTH ,SEQ)))
(I 0 (1+ I))
(SEQU ,SEQ (CDR SEQU)))
((NULL SEQU) RESULT)
(SETF (CHAR RESULT I) (CHARACTER (CAR SEQU)))))
(OTHERWISE (DO ((RESULT (MAKE-STRING (LENGTH ,SEQ)))
(I 0 (1+ I))
(MAX (LENGTH ,SEQ)))
((>= I MAX) RESULT)
(SETF (CHAR RESULT I) (CHARACTER (AREF ,SEQ I)))))) )))
------------------------------------------------------------------------
CL-USER> (compile-file "/tmp/s.lisp")
;;;
;;; Compiling /tmp/s.lisp.
;;; OPTIMIZE levels: Safety=2, Space=0, Speed=3, Debug=3
;;;
;;; Compiling (DEFUN IMPLODE-STRING ...).
;;; Warning:
;;; in file s.lisp, position 158
;;; at (DEFINE-COMPILER-MACRO IMPLODE-STRING ...)
;;; ! Variable FORM, declared as IGNORE, found in a lisp form.
;;; End of Pass 1.
;;; Emitting code for IMPLODE-STRING.
;;; Emitting code for IMPLODE-STRING.
;;; Note:
;;; Invoking external command:
;;; gcc "-I/usr/local/include/" -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -g -O2
-fPIC -D_THREAD_SAFE -Dlinux -O2 -w -c "/tmp/s.c" -o "/tmp/s.o"
;;;
;;; Note:
;;; Invoking external command:
;;; gcc -o "/tmp/s.fas" -L"/usr/local/lib/" "/tmp/s.o"
"-Wl,--rpath,/usr/local/lib/" -shared -lffi -lecl -lgmp -lpthread -ldl -lm
;;;
;;; Finished compiling /tmp/s.lisp.
;;;
#P"/tmp/s.fas"
T
NIL
CL-USER>
--
__Pascal Bourguignon__ http://www.informatimago.com/
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