+
+;;; Between 1.0.4.53 and 1.0.4.69 character untagging was broken on
+;;; x86-64 if the result of the VOP was allocated on the stack, failing
+;;; an aver in the compiler.
+(with-test (:name :character-untagging)
+ (compile nil
+ '(lambda (c0 c1 c2 c3 c4 c5 c6 c7
+ c8 c9 ca cb cc cd ce cf)
+ (declare (type character c0 c1 c2 c3 c4 c5 c6 c7
+ c8 c9 ca cb cc cd ce cf))
+ (char< c0 c1 c2 c3 c4 c5 c6 c7
+ c8 c9 ca cb cc cd ce cf))))
+
+;;; Characters could be coerced to subtypes of CHARACTER to which they
+;;; don't belong. Also, character designators that are not characters
+;;; could be coerced to proper subtypes of CHARACTER.
+(with-test (:name :bug-841312)
+ ;; First let's make sure that the conditions hold that make the test
+ ;; valid: #\Nak is a BASE-CHAR, which at the same time ensures that
+ ;; STANDARD-CHAR is a proper subtype of BASE-CHAR, and under
+ ;; #+SB-UNICODE the character with code 955 exists and is not a
+ ;; BASE-CHAR.
+ (assert (typep #\Nak 'base-char))
+ #+sb-unicode
+ (assert (let ((c (code-char 955)))
+ (and c (not (typep c 'base-char)))))
+ ;; Test the formerly buggy coercions:
+ (macrolet ((assert-coerce-type-error (object type)
+ `(assert (raises-error? (coerce ,object ',type)
+ type-error))))
+ (assert-coerce-type-error #\Nak standard-char)
+ (assert-coerce-type-error #\a extended-char)
+ #+sb-unicode
+ (assert-coerce-type-error (code-char 955) base-char)
+ (assert-coerce-type-error 'a standard-char)
+ (assert-coerce-type-error "a" standard-char))
+ ;; The following coercions still need to be possible:
+ (macrolet ((assert-coercion (object type)
+ `(assert (typep (coerce ,object ',type) ',type))))
+ (assert-coercion #\a standard-char)
+ (assert-coercion #\Nak base-char)
+ #+sb-unicode
+ (assert-coercion (code-char 955) character)
+ (assert-coercion 'a character)
+ (assert-coercion "a" character)))
+
+(with-test (:name :bug-994487)
+ (let ((f (compile nil `(lambda (char)
+ (code-char (1+ (char-code char)))))))
+ (assert (equal `(function (t) (values (sb-kernel:character-set
+ ((1 . ,(1- char-code-limit))))
+ &optional))
+ (sb-impl::%fun-type f)))))
+
+(with-test (:name (:case-insensitive-char-comparisons :eacute))
+ (assert (char-equal (code-char 201) (code-char 233))))
+
+(with-test (:name (:case-insensitive-char-comparisons :exhaustive))
+ (dotimes (i char-code-limit)
+ (let* ((char (code-char i))
+ (down (char-downcase char))
+ (up (char-upcase char)))
+ (assert (char-equal char char))
+ (when (char/= char down)
+ (assert (char-equal char down)))
+ (when (char/= char up)
+ (assert (char-equal char up))))))