34 lines
712 B
JavaScript
34 lines
712 B
JavaScript
description(
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"This tests that a structure clobber in a basic block that does not touch a live variable causes that variable's structure to be correctly clobbered."
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);
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var clobberedObject;
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function bar() {
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if (!clobberedObject)
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return;
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delete clobberedObject.f;
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clobberedObject.g = 42;
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}
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function foo(p, o_) {
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var o = o_.f; // Force this block to have a SetLocal.
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var x = o.f;
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if (p)
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bar();
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return x + o.f;
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}
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var expected = 2;
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for (var i = 0; i < 200; ++i) {
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var object = {f:1};
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var predicate = true;
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if (i >= 150) {
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clobberedObject = object;
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expected = 0/0; // "NaN"
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}
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shouldBe("foo(predicate, {f:object})", "" + expected);
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}
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