v8/test/mjsunit/regress/regress-1166.js

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

// Deoptimization after a short-circuit logical operation in an effect
// context should not see the value of the expression.
function observe(x, y) { return x; }

function test(x) { return observe(1, ((false || false), x + 1)); }

for (var i = 0; i < 5; ++i) test(0);
%OptimizeFunctionOnNextCall(test);
test(0);

test("a");