Add a regression test for boolean concatenation in strings.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/106743010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18287 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/bool-concat.js

+// Copyright 2013 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
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+//
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+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+function format(a) {
+  if (a) {
+    return "X"+true+"Y";
+  } else {
+    return "X"+false+"Y";
+  }
+}
+
+for (var i = 0; i < 1000; i++) {
+  assertEquals("XtrueY", format(true));
+  assertEquals("XfalseY", format(false));
+}