0.8.0.78.vector-nil-string.5:

[sbcl.git] / src / code / target-hash-table.lisp

diff --git a/src/code/target-hash-table.lisp b/src/code/target-hash-table.lisp
index 52f01c3..0cdd509 100644 (file)
--- a/src/code/target-hash-table.lisp
+++ b/src/code/target-hash-table.lisp
@@ -15,7 +15,7 @@
 ;;;; utilities
 
 (eval-when (:compile-toplevel :load-toplevel :execute)
-  (defconstant max-hash most-positive-fixnum))
+  (defconstant max-hash sb!xc:most-positive-fixnum))
 
 (deftype hash ()
   `(integer 0 ,max-hash))
@@ -176,6 +176,14 @@
                   :hash-vector (unless (eq test 'eq)
                                  (make-array size+1
                                              :element-type '(unsigned-byte 32)
+                                             ;; as explained by pmai on
+                                             ;; openprojects #lisp IRC
+                                             ;; 2002-07-30: #x80000000 is
+                                             ;; bigger than any possible nonEQ
+                                             ;; hash value, and thus indicates
+                                             ;; an empty slot; and EQ hash
+                                             ;; tables don't use
+                                             ;; HASH-TABLE-HASH-VECTOR
                                              :initial-element #x80000000)))))
       (declare (type index size+1 scaled-size length))
       ;; Set up the free list, all free. These lists are 0 terminated.