Custom Query (1030 matches)

Subject line says it all. It works in 32-bit objc and 64-bit CCL so I'm guessing it's a bug in the interfaces.

The default print method for ns-mutable-data (and presumably ns-data as well) displays the actual contents of the data object. This can result in hijacking the listener if a large data object is inadvertently printed, or returned from a top-level form. It would be better if the print method (not necessarily the princ method) for ns-data only displayed the size, not the actual contents.

In the alternative, the print method for ns-data should respect *print-length*. But this is probably harder and not really necessary.

The definition of TYPECASE, ETYPECASE and CTYPECASE in the standard (CLHS §5.3) allows that there be multiple clauses specifying a matching type. If a clause is completely shadowed by earlier clauses, the compiler may issue a warning. The type of the warning is explicitly mentioned to be STYLE-WARNING. The exact wording is as follows:

The compiler may choose to issue a warning of type style-warning if a clause will never be selected because it is completely shadowed by earlier clauses.

However, CCL issues a SIMPLE-WARNING in such situations, e. g.:

(block nil
  (handler-bind ((warning (lambda (w) (return (type-of w)))))
    (macroexpand '(typecase nr
                    (long-float #\L) 
                    (double-float #\D)
                    (short-float #\S)
                    (t #\E)))))
⇒ SIMPLE-WARNING

Which, I believe, contradicts the above disposition of the standard. One consequence is that, with ASDF, such a warning issued during the compilation of a file makes COMPILE-OP fail, signalling an error where, in fact, there should be none.