Mercurial > jdk8-mips64-public > nashorn / file revision

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 /**

  * NASHORN-111 :  ClassCastException from JSON.stringify

  *

  * @test

  * @run

  */

 // problem 1

 // the conversions in TernaryNode are not necessary, but they should not cause problems. They did

 // this was because the result of Global.allocate(Object[])Object which returns a NativeObject.

 // was tracked as an object type on our stack. The type system did not recognize this as an array.

 // Then the explicit conversions became "convert NativeArray->Object[]" which is a checkccast Object[]

 // which naturally failed.

 // I pushed the appropriate arraytype on the stack for Global.allocate.

 // I also removed the conversions in CodeGen, all conversions should be done in Lower, as

 // NASHORN-706 states.

 var silent = false;

 var stdio = silent ? ['pipe', 'pipe', 'pipe', 'ipc'] : [0, 1, 2, 'ipc'];

 // This made the test pass, but it's still not correct to pick widest types for array

 // and primitives. Widest(Object[], int) gave us Object[] which makes no sense. This is used

 // by lower to type the conversions, so function b below also failed until I made a change

 // ty type widest to actually return the widest common denominator, if both aren't arrays

 function b() {

     var silent2 = false;

     var stdio2 = silent2 ? [1,2,3] : 17;

 }