Regression test for existing bug in String::MakeExternal.

test/cctest/cctest.status

 # Copyright 2011 the V8 project authors. All rights reserved.
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 # modification, are permitted provided that the following conditions are
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 #
 #     * Redistributions of source code must retain the above copyright
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@@ skipping 24 matching lines @@
 test-api/ApplyInterruption: PASS || TIMEOUT
 
 # These tests always fail.  They are here to test test.py.  If
 # they don't fail then test.py has failed.
 test-serialize/TestThatAlwaysFails: FAIL
 test-serialize/DependentTestThatAlwaysFails: FAIL
 
 # This test always fails.  It tests that LiveEdit causes abort when turned off.
 test-debug/LiveEditDisabled: FAIL
 
+# TODO(yangguo,mstarzinger): Fix bug in String::MakeExternal.
+test-api/MakingExternalUnalignedAsciiString: PASS || CRASH
+
 # TODO(gc): Temporarily disabled in the GC branch.
 test-log/EquivalenceOfLoggingAndTraversal: PASS || FAIL
 
 # We do not yet shrink weak maps after they have been emptied by the GC
 test-weakmaps/Shrinking: FAIL
 test-weaksets/WeakSet_Shrinking: FAIL
 
 # Boot up memory use is bloated in debug mode.
 test-mark-compact/BootUpMemoryUse: PASS, PASS || FAIL if $mode == debug
 
@@ skipping 55 matching lines @@
 test-log/LogCallbacks: SKIP
 test-log/ProfLazyMode: SKIP
 
 # Native Client doesn't support sockets.
 test-debug/DebuggerAgent: SKIP
 test-debug/DebuggerAgentProtocolOverflowHeader: SKIP
 test-sockets/Socket: SKIP
 
 # Profiling doesn't work on Native Client.
 test-cpu-profiler/*: SKIP