Add regression tests for two issues (7525, 7513).

tests/language/issue7513_test.dart

Index: tests/language/issue7513_test.dart
===================================================================
--- tests/language/issue7513_test.dart	(revision 0)
+++ tests/language/issue7513_test.dart	(revision 0)
@@ -0,0 +1,17 @@
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// Regression test for issue 7513.
+
+foo(a, b) {
+  b[0] = 0.1;
+  return a * b[0];
+}
+
+main() {
+  var a = 0.1;
+  var b = [0.1];
+  for (var i = 0; i < 10000; i++) foo(a, b);

[regis, 2012/12/20 00:55:57]

How about adding an Expect(...) to check the result of foo, either in the loop
or after the loop?

[srdjan, 2012/12/20 01:08:04]

Done.

+}
+