Version 2.3.10...

test/mjsunit/regexp.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 466 matching lines @@
 assertRegExpTest(/[,b]\Bb/, "bb", true);
 assertRegExpTest(/[,b]\bb/, ",b", true);
 assertRegExpTest(/[,b]\Bb/, ",b", false);
 
 assertRegExpTest(/[,b]\b[,b]/, "bb", false);
 assertRegExpTest(/[,b]\B[,b]/, "bb", true);
 assertRegExpTest(/[,b]\b[,b]/, ",b", true);
 assertRegExpTest(/[,b]\B[,b]/, ",b", false);
 assertRegExpTest(/[,b]\b[,b]/, "b,", true);
 assertRegExpTest(/[,b]\B[,b]/, "b,", false);
+
+// Test that caching of result doesn't share result objects.
+// More iterations increases the chance of hitting a GC.
+for (var i = 0; i < 100; i++) {
+  var re = /x(y)z/;
+  var res = re.exec("axyzb");
+  assertTrue(!!res);
+  assertEquals(2, res.length);
+  assertEquals("xyz", res[0]);
+  assertEquals("y", res[1]);
+  assertEquals(1, res.index);
+  assertEquals("axyzb", res.input);
+  assertEquals(undefined, res.foobar);
+  
+  res.foobar = "Arglebargle";
+  res[3] = "Glopglyf";
+  assertEquals("Arglebargle", res.foobar);
+}