[macruby-changes] [3775] MacRuby/trunk/array.c

[source_changes at macosforge.org]

Revision: 3775
          http://trac.macosforge.org/projects/ruby/changeset/3775
Author:   martinlagardette at apple.com
Date:     2010-03-16 16:07:41 -0700 (Tue, 16 Mar 2010)
Log Message:
-----------
#rindex: don't lookup param in an empty array

 - Fixes 7692217

Modified Paths:
--------------
    MacRuby/trunk/array.c

Modified: MacRuby/trunk/array.c
===================================================================
--- MacRuby/trunk/array.c	2010-03-16 22:41:08 UTC (rev 3774)
+++ MacRuby/trunk/array.c	2010-03-16 23:07:41 UTC (rev 3775)
@@ -896,10 +896,12 @@
     else {
 	VALUE val;
  	rb_scan_args(argc, argv, "01", &val);
-	
-	size_t pos = rary_rindex_of_item(ary, RARY(ary)->len - 1, val);
-	if (pos != NOT_FOUND) {
-	    return LONG2NUM(pos);
+
+	if (RARY(ary)->len > 0) {
+	    size_t pos = rary_rindex_of_item(ary, RARY(ary)->len - 1, val);
+	    if (pos != NOT_FOUND) {
+		return LONG2NUM(pos);
+	    }
 	}
     }
     return Qnil;
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