PolylineVolumeGeometry crashes with large granularity

The following code snippet results in an 'Invalid array length' crash in PolylinePipeline.generateArc. This crash does not happen when using granularity: Cesium.Math.PI.

var viewer = new Cesium.Viewer('cesiumContainer');

function computeCircle(radius) {
    var positions = [];
    for (var i = 0; i < 360; i++) {
        var radians = Cesium.Math.toRadians(i);
        positions.push(new Cesium.Cartesian2(radius * Math.cos(radians), radius * Math.sin(radians)));
    }
    return positions;
}

viewer.entities.add({
    polylineVolume : {
        positions : Cesium.Cartesian3.fromDegreesArray([-85.0, 32.0,
                                                        -105.0, 32.0]),
        shape : computeCircle(60000.0),
        material : Cesium.Color.RED,
        granularity: Cesium.Math.TWO_PI
    }
});

Reproduce the supplied PolylineVolumeGeometry example with granularity set to Cesium.Math.TWO_PI, then inspect PolylinePipeline.generateArc where the Invalid array length crash occurs. Trace the large-granularity path and verify that the example completes without the crash, ideally with coverage for this case.