* lisp.h (circular_list_error, FOREACH): Remove; unused.

* data.c (circular_list_error): Remove.

src/ChangeLog

+2011-04-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* lisp.h (circular_list_error, FOREACH): Remove; unused.
+	* data.c (circular_list_error): Remove.
+
 2011-04-11  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* commands.h (last_point_position, last_point_position_buffer):

src/data.c

@@ -101,13 +101,6 @@ Lisp_Object Qinteractive_form;
 static void swap_in_symval_forwarding (struct Lisp_Symbol *, struct Lisp_Buffer_Local_Value *);
 
 
-void
-circular_list_error (Lisp_Object list)
-{
-  xsignal (Qcircular_list, list);
-}
-
-
 Lisp_Object
 wrong_type_argument (register Lisp_Object predicate, register Lisp_Object value)
 {

src/lisp.h

@@ -2320,7 +2320,6 @@ extern Lisp_Object Qinteger;
 
 extern Lisp_Object Qfont_spec, Qfont_entity, Qfont_object;
 
-extern void circular_list_error (Lisp_Object) NO_RETURN;
 EXFUN (Finteractive_form, 1);
 EXFUN (Fbyteorder, 0);
 
@@ -3521,16 +3520,6 @@ extern void init_system_name (void);
       ? 0						\
       : (wrong_type_argument (Qlistp, (list))), 1))
 
-#define FOREACH(hare, list, tortoise, n)		\
-  for (tortoise = hare = (list), n = 0;			\
-       !LIST_END_P (list, hare);			\
-       (hare = XCDR (hare), ++n,			\
-	((n & 1) != 0					\
-	 ? (tortoise = XCDR (tortoise),			\
-	    (EQ (hare, tortoise)			\
-	     && (circular_list_error ((list)), 1)))	\
-	 : 0)))
-
 /* Use this to suppress gcc's `...may be used before initialized' warnings. */
 #ifdef lint
 # define IF_LINT(Code) Code