src/v8/test/mjsunit/regress/regress-crbug-258519.js

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// Flags: --allow-natives-syntax

var a = {
  compare_null: function(x) { return null != x; },
  kaboom: function() {}
}

function crash(x) {
  var b = a;
  b.compare_null(x) && b.kaboom();
  return "ok";
}

assertEquals("ok", crash(null));
assertEquals("ok", crash(null));
%OptimizeFunctionOnNextCall(crash);
// Used to throw: "TypeError: Cannot call method 'kaboom' of undefined".
assertEquals("ok", crash(1));