0.9.17.15: silence %SAP-ALIEN compiler-note for MAKE-ALIEN in default policy

[sbcl.git] / src / code / array.lisp

diff --git a/src/code/array.lisp b/src/code/array.lisp
index d1e06bb..a3c6793 100644 (file)
--- a/src/code/array.lisp
+++ b/src/code/array.lisp
@@ -944,11 +944,13 @@ of specialized arrays is supported."
 
 (defun shrink-vector (vector new-length)
   (declare (vector vector))
-  (cond ((eq (length vector) new-length)
-         vector)
-        ((array-has-fill-pointer-p vector)
-         (setf (%array-fill-pointer vector) new-length))
-        (t (subseq vector 0 new-length))))
+  (cond
+    ((eq (length vector) new-length)
+     vector)
+    ((array-has-fill-pointer-p vector)
+     (setf (%array-fill-pointer vector) new-length)
+     vector)
+    (t (subseq vector 0 new-length))))
 
 ;;; Fill in array header with the provided information, and return the array.
 (defun set-array-header (array data length fill-pointer displacement dimensions
@@ -973,7 +975,13 @@ of specialized arrays is supported."
 ;;;; ZAP-ARRAY-DATA for ADJUST-ARRAY
 
 ;;; a temporary to be used when OLD-DATA and NEW-DATA are EQ.
-;;; KLUDGE: Boy, DYNAMIC-EXTENT would be nice.
+;;; KLUDGE: Boy, DYNAMIC-EXTENT would be nice. This is rebound
+;;; to length zero array in each new thread.
+;;;
+;;; DX is probably a bad idea, because a with a big array it would
+;;; be fairly easy to blow the stack.
+;;;
+;;; Rebound per thread.
 (defvar *zap-array-data-temp* (make-array 1000 :initial-element t))
 
 (defun zap-array-data-temp (length element-type initial-element