// Copyright 2013 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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// Flags: --track-fields --track-double-fields --allow-natives-syntax
// Flags: --parallel-recompilation --parallel-recompilation-delay=100

if (!%IsParallelRecompilationSupported()) {
  print("Parallel recompilation is disabled. Skipping this test.");
  quit();
}

function new_object() {
  var o = {};
  o.a = 1;
  o.b = 2;
  return o;
}

function add_field(obj) {
  obj.c = 3;
}

add_field(new_object());
add_field(new_object());
%OptimizeFunctionOnNextCall(add_field, "parallel");

var o = new_object();
// Trigger optimization in the background thread.
add_field(o);
// Invalidate transition map while optimization is underway.
o.c = 2.2;
// Sync with background thread to conclude optimization that bailed out.
assertUnoptimized(add_field, "sync");