as unknown types. (reported by piso on #lisp)
* bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
with values NIL and :ERROR. (thanks to Milan Zamazal)
+ * fixed bug 191c: CLOS now does proper keyword argument checking as
+ described in CLHS 7.6.5 and 7.6.5.1.
+ * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
+ longer raise an error; further, using a list as a for-as-arithmetic
+ counter now raises a meaningful error.
+ * fixed bug 213a: even fairly unreasonable CONS type specifiers are
+ now understood by sequence creation functions such as MAKE-SEQUENCE
+ and COERCE.
* compiler enhancement: SIGNUM is now better able to derive the type
of its result.
+ * type declarations inside WITH-SLOTS are checked. (reported by
+ salex on #lisp)
+ * loading incompatible FASLs, e.g. those produced by an incompatible
+ lisp implementation, cause a condition of type SB-EXT:INVALID-FASL
+ (a subtype of ERROR) to be raised.
* fixed some bugs revealed by Paul Dietz' test suite:
** incorrect optimization of TRUNCATE for a positive first
argument and negative second.