marcandre	2010-04-03 07:44:17 +0900 (Sat, 03 Apr 2010)

  New Revision: 27202

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=27202

  Log:
    * array.c (rb_ary_product): Make defensive copy in case of block...

  Modified files:
    trunk/array.c

Index: array.c
===================================================================
--- array.c	(revision 27201)
+++ array.c	(revision 27202)
@@ -4103,7 +4103,11 @@
     }
 
     /* Otherwise, allocate and fill in an array of results */
-    if (!rb_block_given_p()) {
+    if (rb_block_given_p()) {
+	/* Make defensive copies of arrays */
+	for (i = 0; i < n; i++) arrays[i] = ary_make_substitution(arrays[i]);
+    }
+    else {
 	result = rb_ary_new2(resultlen);
     }
     for (i = 0; i < resultlen; i++) {

--
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