src/v8/test/webkit/dfg-float32-array-nan.js

// Copyright 2013 the V8 project authors. All rights reserved.
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description(
"Tests what happens in the DFG JIT if we load from a Float32 array that contains a weirdly formatted NaN."
);

var buffer = new ArrayBuffer(4);

var int32View = new Int32Array(buffer);
var floatView = new Float32Array(buffer);

int32View[0] = -4587521;

debug(int32View[0]);

function foo(o) {
    debug(o[0]);
    return o[0];
}

for (var i = 0; i < 100; ++i)
    shouldBe("\"\" + foo(floatView)", "\"NaN\"");

debug("I didn't crash, which is a good thing.");