1 files changed, 56 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/compiler/concurrent-proto-change.js b/deps/v8/test/mjsunit/compiler/concurrent-proto-change.js
new file mode 100644
index 0000000000..e126465a95
--- /dev/null
+++ b/deps/v8/test/mjsunit/compiler/concurrent-proto-change.js
@@ -0,0 +1,56 @@
+// 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
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --allow-natives-syntax
+// Flags: --concurrent-recompilation --block-concurrent-recompilation
+
+if (!%IsConcurrentRecompilationSupported()) {
+  print("Concurrent recompilation is disabled. Skipping this test.");
+  quit();
+}
+
+function f(foo) { return foo.bar(); }
+
+var o = {};
+o.__proto__ = { __proto__: { bar: function() { return 1; } } };
+
+assertEquals(1, f(o));
+assertEquals(1, f(o));
+
+// Mark for concurrent optimization.
+%OptimizeFunctionOnNextCall(f, "concurrent");
+// Kick off recompilation.
+assertEquals(1, f(o));
+// Change the prototype chain after compile graph has been created.
+o.__proto__.__proto__ = { bar: function() { return 2; } };
+// At this point, concurrent recompilation thread has not yet done its job.
+assertUnoptimized(f, "no sync");
+// Let the background thread proceed.
+%UnblockConcurrentRecompilation();
+// Optimization eventually bails out due to map dependency.
+assertUnoptimized(f, "sync");
+assertEquals(2, f(o));