test/mjsunit/regress/regress-754.js

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// Test that Array.prototype.lastIndexOf correctly handles null and undefined
// as fromIndex argument.

// See: http://code.google.com/p/v8/issues/detail?id=754

var a = new Array(1,2,1);
assertEquals(1, a.lastIndexOf(2));
assertEquals(2, a.lastIndexOf(1));
assertEquals(0, a.lastIndexOf(1, undefined));
assertEquals(0, a.lastIndexOf(1, null));
assertEquals(-1, a.lastIndexOf(2, undefined));
assertEquals(-1, a.lastIndexOf(2, null));