src/v8/test/mjsunit/regress/regress-1099.js

// Copyright 2011 the V8 project authors. All rights reserved.
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// Flags: --allow-natives-syntax

// Test that LApplyArguments lithium instruction restores context after the call.

function X() {
  var slot = "foo"; return function (a) { return slot === a; }
}

function Y(x) {
  var slot = "bar";
  return function (a) {
    x.apply(this, arguments);
    return slot === 'bar';
  };
}

var y = Y(X());
%PrepareFunctionForOptimization(y);

for (var i = 0; i < 5; i++) {
  assertTrue(y("foo"));
}

%OptimizeFunctionOnNextCall(y);
assertTrue(y("foo"));