(NTH-VALUE 1000 (VALUES-LIST (MAKE-LIST 1001))) takes several hours
to compile.
+248: "reporting errors in type specifier syntax"
+ (TYPEP 1 '(SYMBOL NIL)) says something about "unknown type
+ specifier".
+
DEFUNCT CATEGORIES OF BUGS
IR1-#:
These labels were used for bugs related to the old IR1 interpreter.