JSTests/stress/reparsing-unlinked-codeblock.js

//@ runDefault("--forceCodeBlockToJettisonDueToOldAge=1", "--useUnlinkedCodeBlockJettisoning=1", "--countParseTimes=1", "--useConcurrentJIT=0")

function shouldBe(actual, expected) {
    if (actual !== expected)
        throw new Error('bad value: ' + actual);
}

function hello()
{
    return (function () {
        function world() {
            return 42;
        };
        return world();
    }());
}

// Compile hello and world function.
shouldBe(hello(), 42);
var first = $vm.parseCount();
// Kick full GC 20 times to make UnlinkedCodeBlock aged and destroyed. Jettison hello CodeBlock, and underlying world UnlinkedCodeBlock.
for (var i = 0; i < 20; ++i)
    fullGC();
// Recompile world.
shouldBe(hello(), 42);
var second = $vm.parseCount() - first;
shouldBe(second >= 3, true); // `hello`, `inner`, `world`. Other functions can be destroyed, so using >= here.