StackOverflowError in llvm/Transformer.scala

[danielflat]

The following effekt program is not running. I need to get this test program running to my thesis.

record OneSlotPerson(
  field1: Int,
  field2: Int,
  field3: Int,
  field4: Int,
  field5: Int,
  field6: Int
)

// we first allocate 128 slots and then release them all, such that we have exactly 128 slots on the to-do-list
// therefore, we have to flush the to-do list twice to clear it completely
def allocate128SlotsAndReleaseThem() = {
    var x1 = OneSlotPerson(1, 2, 3, 4, 5, 6)
    var x2 = OneSlotPerson(2, 3, 4, 5, 6, 7)
    var x3 = OneSlotPerson(3, 4, 5, 6, 7, 8)
    var x4 = OneSlotPerson(4, 5, 6, 7, 8, 9)
    var x5 = OneSlotPerson(5, 6, 7, 8, 9, 10)
    var x6 = OneSlotPerson(6, 7, 8, 9, 10, 11)
    var x7 = OneSlotPerson(7, 8, 9, 10, 11, 12)
    var x8 = OneSlotPerson(8, 9, 10, 11, 12, 13)
    var x9 = OneSlotPerson(9, 10, 11, 12, 13, 14)
    var x10 = OneSlotPerson(10, 11, 12, 13, 14, 15)
    var x11 = OneSlotPerson(11, 12, 13, 14, 15, 16)
    var x12 = OneSlotPerson(12, 13, 14, 15, 16, 17)
    var x13 = OneSlotPerson(13, 14, 15, 16, 17, 18)
    var x14 = OneSlotPerson(14, 15, 16, 17, 18, 19)
    var x15 = OneSlotPerson(15, 16, 17, 18, 19, 20)
    var x16 = OneSlotPerson(16, 17, 18, 19, 20, 21)
    var x17 = OneSlotPerson(17, 18, 19, 20, 21, 22)
    var x18 = OneSlotPerson(18, 19, 20, 21, 22, 23)
    var x19 = OneSlotPerson(19, 20, 21, 22, 23, 24)
    var x20 = OneSlotPerson(20, 21, 22, 23, 24, 25)
    var x21 = OneSlotPerson(21, 22, 23, 24, 25, 26)
    var x22 = OneSlotPerson(22, 23, 24, 25, 26, 27)
    var x23 = OneSlotPerson(23, 24, 25, 26, 27, 28)
    var x24 = OneSlotPerson(24, 25, 26, 27, 28, 29)
    var x25 = OneSlotPerson(25, 26, 27, 28, 29, 30)
    var x26 = OneSlotPerson(26, 27, 28, 29, 30, 31)
    var x27 = OneSlotPerson(27, 28, 29, 30, 31, 32)
    var x28 = OneSlotPerson(28, 29, 30, 31, 32, 33)
    var x29 = OneSlotPerson(29, 30, 31, 32, 33, 34)
    var x30 = OneSlotPerson(30, 31, 32, 33, 34, 35)
    var x31 = OneSlotPerson(31, 32, 33, 34, 35, 36)
    var x32 = OneSlotPerson(32, 33, 34, 35, 36, 37)
    var x33 = OneSlotPerson(33, 34, 35, 36, 37, 38)
    var x34 = OneSlotPerson(34, 35, 36, 37, 38, 39)
    var x35 = OneSlotPerson(35, 36, 37, 38, 39, 40)
    var x36 = OneSlotPerson(36, 37, 38, 39, 40, 41)
    var x37 = OneSlotPerson(37, 38, 39, 40, 41, 42)
    var x38 = OneSlotPerson(38, 39, 40, 41, 42, 43)
    var x39 = OneSlotPerson(39, 40, 41, 42, 43, 44)
    var x40 = OneSlotPerson(40, 41, 42, 43, 44, 45)
    var x41 = OneSlotPerson(41, 42, 43, 44, 45, 46)
    var x42 = OneSlotPerson(42, 43, 44, 45, 46, 47)
    var x43 = OneSlotPerson(43, 44, 45, 46, 47, 48)
    var x44 = OneSlotPerson(44, 45, 46, 47, 48, 49)
    var x45 = OneSlotPerson(45, 46, 47, 48, 49, 50)
    var x46 = OneSlotPerson(46, 47, 48, 49, 50, 51)
    var x47 = OneSlotPerson(47, 48, 49, 50, 51, 52)
    var x48 = OneSlotPerson(48, 49, 50, 51, 52, 53)
    var x49 = OneSlotPerson(49, 50, 51, 52, 53, 54)
    var x50 = OneSlotPerson(50, 51, 52, 53, 54, 55)
    var x51 = OneSlotPerson(51, 52, 53, 54, 55, 56)
    var x52 = OneSlotPerson(52, 53, 54, 55, 56, 57)
    var x53 = OneSlotPerson(53, 54, 55, 56, 57, 58)
    var x54 = OneSlotPerson(54, 55, 56, 57, 58, 59)
    var x55 = OneSlotPerson(55, 56, 57, 58, 59, 60)
    var x56 = OneSlotPerson(56, 57, 58, 59, 60, 61)
    var x57 = OneSlotPerson(57, 58, 59, 60, 61, 62)
    var x58 = OneSlotPerson(58, 59, 60, 61, 62, 63)
    var x59 = OneSlotPerson(59, 60, 61, 62, 63, 64)
    var x60 = OneSlotPerson(60, 61, 62, 63, 64, 65)
    var x61 = OneSlotPerson(61, 62, 63, 64, 65, 66)
    var x62 = OneSlotPerson(62, 63, 64, 65, 66, 67)
    var x63 = OneSlotPerson(63, 64, 65, 66, 67, 68)
    var x64 = OneSlotPerson(64, 65, 66, 67, 68, 69)
    var x65 = OneSlotPerson(65, 66, 67, 68, 69, 70)
    var x66 = OneSlotPerson(66, 67, 68, 69, 70, 71)
    var x67 = OneSlotPerson(67, 68, 69, 70, 71, 72)
    var x68 = OneSlotPerson(68, 69, 70, 71, 72, 73)
    var x69 = OneSlotPerson(69, 70, 71, 72, 73, 74)
    var x70 = OneSlotPerson(70, 71, 72, 73, 74, 75)
    var x71 = OneSlotPerson(71, 72, 73, 74, 75, 76)
    var x72 = OneSlotPerson(72, 73, 74, 75, 76, 77)
    var x73 = OneSlotPerson(73, 74, 75, 76, 77, 78)
    var x74 = OneSlotPerson(74, 75, 76, 77, 78, 79)
    var x75 = OneSlotPerson(75, 76, 77, 78, 79, 80)
    var x76 = OneSlotPerson(76, 77, 78, 79, 80, 81)
    var x77 = OneSlotPerson(77, 78, 79, 80, 81, 82)
    var x78 = OneSlotPerson(78, 79, 80, 81, 82, 83)
    var x79 = OneSlotPerson(79, 80, 81, 82, 83, 84)
    var x80 = OneSlotPerson(80, 81, 82, 83, 84, 85)
    var x81 = OneSlotPerson(81, 82, 83, 84, 85, 86)
    var x82 = OneSlotPerson(82, 83, 84, 85, 86, 87)
    var x83 = OneSlotPerson(83, 84, 85, 86, 87, 88)
    var x84 = OneSlotPerson(84, 85, 86, 87, 88, 89)
    var x85 = OneSlotPerson(85, 86, 87, 88, 89, 90)
    var x86 = OneSlotPerson(86, 87, 88, 89, 90, 91)
    var x87 = OneSlotPerson(87, 88, 89, 90, 91, 92)
    var x88 = OneSlotPerson(88, 89, 90, 91, 92, 93)
    var x89 = OneSlotPerson(89, 90, 91, 92, 93, 94)
    var x90 = OneSlotPerson(90, 91, 92, 93, 94, 95)
    var x91 = OneSlotPerson(91, 92, 93, 94, 95, 96)
    var x92 = OneSlotPerson(92, 93, 94, 95, 96, 97)
    var x93 = OneSlotPerson(93, 94, 95, 96, 97, 98)
    var x94 = OneSlotPerson(94, 95, 96, 97, 98, 99)
    var x95 = OneSlotPerson(95, 96, 97, 98, 99, 100)
    var x96 = OneSlotPerson(96, 97, 98, 99, 100, 101)
    var x97 = OneSlotPerson(97, 98, 99, 100, 101, 102)
    var x98 = OneSlotPerson(98, 99, 100, 101, 102, 103)
    var x99 = OneSlotPerson(99, 100, 101, 102, 103, 104)
    var x100 = OneSlotPerson(100, 101, 102, 103, 104, 105)
    var x101 = OneSlotPerson(101, 102, 103, 104, 105, 106)
    var x102 = OneSlotPerson(102, 103, 104, 105, 106, 107)
    var x103 = OneSlotPerson(103, 104, 105, 106, 107, 108)
    var x104 = OneSlotPerson(104, 105, 106, 107, 108, 109)
    var x105 = OneSlotPerson(105, 106, 107, 108, 109, 110)
    var x106 = OneSlotPerson(106, 107, 108, 109, 110, 111)
    var x107 = OneSlotPerson(107, 108, 109, 110, 111, 112)
    var x108 = OneSlotPerson(108, 109, 110, 111, 112, 113)
    var x109 = OneSlotPerson(109, 110, 111, 112, 113, 114)
    var x110 = OneSlotPerson(110, 111, 112, 113, 114, 115)
    var x111 = OneSlotPerson(111, 112, 113, 114, 115, 116)
    var x112 = OneSlotPerson(112, 113, 114, 115, 116, 117)
    var x113 = OneSlotPerson(113, 114, 115, 116, 117, 118)
    var x114 = OneSlotPerson(114, 115, 116, 117, 118, 119)
    var x115 = OneSlotPerson(115, 116, 117, 118, 119, 120)
    var x116 = OneSlotPerson(116, 117, 118, 119, 120, 121)
    var x117 = OneSlotPerson(117, 118, 119, 120, 121, 122)
    var x118 = OneSlotPerson(118, 119, 120, 121, 122, 123)
    var x119 = OneSlotPerson(119, 120, 121, 122, 123, 124)
    var x120 = OneSlotPerson(120, 121, 122, 123, 124, 125)
    var x121 = OneSlotPerson(121, 122, 123, 124, 125, 126)
    var x122 = OneSlotPerson(122, 123, 124, 125, 126, 127)
    var x123 = OneSlotPerson(123, 124, 125, 126, 127, 128)
    var x124 = OneSlotPerson(124, 125, 126, 127, 128, 129)
    var x125 = OneSlotPerson(125, 126, 127, 128, 129, 130)
    var x126 = OneSlotPerson(126, 127, 128, 129, 130, 131)
    var x127 = OneSlotPerson(127, 128, 129, 130, 131, 132)
    var x128 = OneSlotPerson(128, 129, 130, 131, 132, 133)

    println(x1.field1)
    println(x2.field1)
    println(x3.field1)
    println(x4.field1)
    println(x5.field1)
    println(x6.field1)
    println(x7.field1)
    println(x8.field1)
    println(x9.field1)
    println(x10.field1)
    println(x11.field1)
    println(x12.field1)
    println(x13.field1)
    println(x14.field1)
    println(x15.field1)
    println(x16.field1)
    println(x17.field1)
    println(x18.field1)
    println(x19.field1)
    println(x20.field1)
    println(x21.field1)
    println(x22.field1)
    println(x23.field1)
    println(x24.field1)
    println(x25.field1)
    println(x26.field1)
    println(x27.field1)
    println(x28.field1)
    println(x29.field1)
    println(x30.field1)
    println(x31.field1)
    println(x32.field1)
    println(x33.field1)
    println(x34.field1)
    println(x35.field1)
    println(x36.field1)
    println(x37.field1)
    println(x38.field1)
    println(x39.field1)
    println(x40.field1)
    println(x41.field1)
    println(x42.field1)
    println(x43.field1)
    println(x44.field1)
    println(x45.field1)
    println(x46.field1)
    println(x47.field1)
    println(x48.field1)
    println(x49.field1)
    println(x50.field1)
    println(x51.field1)
    println(x52.field1)
    println(x53.field1)
    println(x54.field1)
    println(x55.field1)
    println(x56.field1)
    println(x57.field1)
    println(x58.field1)
    println(x59.field1)
    println(x60.field1)
    println(x61.field1)
    println(x62.field1)
    println(x63.field1)
    println(x64.field1)
    println(x65.field1)
    println(x66.field1)
    println(x67.field1)
    println(x68.field1)
    println(x69.field1)
    println(x70.field1)
    println(x71.field1)
    println(x72.field1)
    println(x73.field1)
    println(x74.field1)
    println(x75.field1)
    println(x76.field1)
    println(x77.field1)
    println(x78.field1)
    println(x79.field1)
    println(x80.field1)
    println(x81.field1)
    println(x82.field1)
    println(x83.field1)
    println(x84.field1)
    println(x85.field1)
    println(x86.field1)
    println(x87.field1)
    println(x88.field1)
    println(x89.field1)
    println(x90.field1)
    println(x91.field1)
    println(x92.field1)
    println(x93.field1)
    println(x94.field1)
    println(x95.field1)
    println(x96.field1)
    println(x97.field1)
    println(x98.field1)
    println(x99.field1)
    println(x100.field1)
    println(x101.field1)
    println(x102.field1)
    println(x103.field1)
    println(x104.field1)
    println(x105.field1)
    println(x106.field1)
    println(x107.field1)
    println(x108.field1)
    println(x109.field1)
    println(x110.field1)
    println(x111.field1)
    println(x112.field1)
    println(x113.field1)
    println(x114.field1)
    println(x115.field1)
    println(x116.field1)
    println(x117.field1)
    println(x118.field1)
    println(x119.field1)
    println(x120.field1)
    println(x121.field1)
    println(x122.field1)
    println(x123.field1)
    println(x124.field1)
    println(x125.field1)
    println(x126.field1)
    println(x127.field1)
    println(x128.field1)
}

def main() = {
  allocate128SlotsAndReleaseThem();
  // allocate & flush to-do list twice
  var flushingTodoListFirstTime = OneSlotPerson(1, 2, 3, 4, 5, 6)
  var flushingTodoListSecondTime = OneSlotPerson(1, 2, 3, 4, 5, 7)

  // deallocate again
  println(flushingTodoListFirstTime.field1)
  println(flushingTodoListSecondTime.field1)
}

I let it run on effekt-master via effekt --no-optimize --backend=llvm allocate_first_then_release_flush_twice.effekt on my intel macbook, getting the following stack trace:

Exception in thread "main" java.lang.StackOverflowError
	at effekt.machine.Transformer$.transform(Transformer.scala:77)
	at effekt.machine.Transformer$.transform(Transformer.scala:170)
	at effekt.machine.Transformer$.transform(Transformer.scala:170)
	at effekt.machine.Transformer$.transform(Transformer.scala:170)
	at effekt.machine.Transformer$.transform(Transformer.scala:170)
	at effekt.machine.Transformer$.transform(Transformer.scala:170)
	at effekt.machine.Transformer$.transform(Transformer.scala:170)
	at effekt.machine.Transformer$.transform(Transformer.scala:170)

Best regards
Daniel

[marvinborner]

This might not be a satisfying solution, but increasing JVM's stack size with sbt -J-Xmx1G -J-Xss1G and running it manually from sbt via project effektJVM and run --backend llvm --no-optimize allocate_first_then_release_flush_twice.effekt works.

I believe #917 was supposed to fix it, cc @phischu

[b-studios]

At some point we should think about what the ultimate solution is. In general, this might somewhat go away once we reimplement Effekt in Effekt ;)

However, in the meantime, we could think about going into a trampolining monad that will complicate things, but be stacksafe. I thought @phischu already did something like this...

[b-studios]

Ah, we only do it for Binding:

effekt/effekt/shared/src/main/scala/effekt/machine/Transformer.scala

Lines 589 to 606 in 5c8845b

	case class Binding[A](body: (A => Trampoline[Statement]) => Trampoline[Statement]) {
	def flatMap[B](rest: A => Binding[B]): Binding[B] = {
	Binding(k => Trampoline.More { () => body(a => Trampoline.More { () => rest(a).body(k) }) })
	}
	def run(k: A => Statement): Statement = trampoline(body { x => Trampoline.Done(k(x)) })
	def map[B](f: A => B): Binding[B] = flatMap { a => pure(f(a)) }
	}
	enum Trampoline[A] {
	case Done(value: A)
	case More(thunk: () => Trampoline[A])
	}
	@tailrec
	def trampoline[A](body: Trampoline[A]): A = body match {
	case Trampoline.Done(value) => value
	case Trampoline.More(thunk) => trampoline(thunk())
	}

but the line in question transforms Statements (i.e., rest), which are in direct style and not via the monad:

effekt/effekt/shared/src/main/scala/effekt/machine/Transformer.scala

Line 170 in 5c8845b

Clause(List(Variable(transform(id), transform(binding.tpe))), transform(rest)),

[b-studios]

Of course we could change this function

effekt/effekt/shared/src/main/scala/effekt/machine/Transformer.scala

Line 76 in 5c8845b

def transform(stmt: core.Stmt)(using BPC: BlocksParamsContext, DC: DeclarationContext, E: ErrorReporter): Statement =

to

-def transform(stmt: core.Stmt)(using BPC: BlocksParamsContext, DC: DeclarationContext, E: ErrorReporter): Statement =
+def transform(stmt: core.Stmt)(using BPC: BlocksParamsContext, DC: DeclarationContext, E: ErrorReporter): Trampoline[Statement] =

which would fix this issue. @phischu WDYT?

[phischu]

It makes me very sad, but I'll have to do it.

[phischu]

Hmm, I already fixed this in #1242, but perhaps we don't have to merge it, since this only happens with --no-optimize. When optimizing, the optimizer already generates a stack overflow.

[danielflat]

Now I get another issue with another program.
Sry for these artificial programs. I am currently experimenting with erasing objects using tail calls if you have one child per heap slot.
Again --no-optimize

record Person(
  field1: Int,
  field2: Int,
  field3: Int,
  field4: Int,
  field5: Int,
  field6: Int,
  field7: Int,
  field8: Int,
  field9: Int,
  field10: Int,
  field11: Int,
  field12: Int,
  field13: Int,
  field14: Int,
  field15: Int,
  field16: Int,
  field17: Int,
  field18: Int,
  field19: Int,
  field20: Int,
  field21: Int,
  field22: Int,
  field23: Int,
  field24: Int,
  field25: Int,
  field26: Int,
  field27: Int,
  field28: Int,
  field29: Int,
  field30: Int,
  field31: Int,
  field32: Int,
  field33: Int,
  field34: Int,
  field35: Int,
  field36: Int,
  field37: Int,
  field38: Int,
  field39: Int,
  field40: Int,
  field41: Int,
  field42: Int,
  field43: Int,
  field44: Int,
  field45: Int,
  field46: Int,
  field47: Int,
  field48: Int,
  field49: Int,
  field50: Int,
  field51: Int,
  field52: Int,
  field53: Int,
  field54: Int,
  field55: Int,
  field56: Int,
  field57: Int,
  field58: Int,
  field59: Int,
  field60: Int,
  field61: Int,
  field62: Int,
  field63: Int,
  field64: Int,
  field65: Int,
  field66: Int,
  field67: Int,
  field68: Int,
  field69: Int,
  field70: Int,
  field71: Int,
  field72: Int,
  field73: Int,
  field74: Int,
  field75: Int,
  field76: Int,
  field77: Int,
  field78: Int,
  field79: Int,
  field80: Int,
  field81: Int,
  field82: Int,
  field83: Int,
  field84: Int,
  field85: Int,
  field86: Int,
  field87: Int,
  field88: Int,
  field89: Int,
  field90: Int,
  field91: Int,
  field92: Int,
  field93: Int,
  field94: Int,
  field95: Int,
  field96: Int,
  field97: Int,
  field98: Int,
  field99: Int,
  field100: Int,
  field101: Int,
  field102: Int,
  field103: Int,
  field104: Int,
  field105: Int,
  field106: Int,
  field107: Int,
  field108: Int,
  field109: Int,
  field110: Int,
  field111: Int,
  field112: Int,
  field113: Int,
  field114: Int,
  field115: Int,
  field116: Int,
  field117: Int,
  field118: Int,
  field119: Int,
  field120: Int,
  field121: Int,
  field122: Int,
  field123: Int,
  field124: Int,
  field125: Int,
  field126: Int,
  field127: Int,
  field128: Int,
  field129: Int,
  field130: Int,
  field131: Int,
  field132: Int,
  field133: Int,
  field134: Int,
  field135: Int,
  field136: Int,
  field137: Int,
  field138: Int,
  field139: Int,
  field140: Int,
  field141: Int,
  field142: Int,
  field143: Int,
  field144: Int,
  field145: Int,
  field146: Int,
  field147: Int,
  field148: Int,
  field149: Int,
  field150: Int,
  field151: Int,
  field152: Int,
  field153: Int,
  field154: Int,
  field155: Int,
  field156: Int,
  field157: Int,
  field158: Int,
  field159: Int,
  field160: Int,
  field161: Int,
  field162: Int,
  field163: Int,
  field164: Int,
  field165: Int,
  field166: Int,
  field167: Int,
  field168: Int,
  field169: Int,
  field170: Int,
  field171: Int,
  field172: Int,
  field173: Int,
  field174: Int,
  field175: Int,
  field176: Int,
  field177: Int,
  field178: Int,
  field179: Int,
  field180: Int,
  field181: Int,
  field182: Int,
  field183: Int,
  field184: Int,
  field185: Int,
  field186: Int,
  field187: Int,
  field188: Int,
  field189: Int,
  field190: Int,
  field191: Int,
  field192: Int,
  field193: Int,
  field194: Int,
  field195: Int,
  field196: Int,
  field197: Int,
  field198: Int,
  field199: Int,
  field200: Int,
  field201: Int,
  field202: Int,
  field203: Int,
  field204: Int,
  field205: Int,
  field206: Int,
  field207: Int,
  field208: Int,
  field209: Int,
  field210: Int,
  field211: Int,
  field212: Int,
  field213: Int,
  field214: Int,
  field215: Int,
  field216: Int,
  field217: Int,
  field218: Int,
  field219: Int,
  field220: Int,
  field221: Int,
  field222: Int,
  field223: Int,
  field224: Int,
  field225: Int,
  field226: Int,
  field227: Int,
  field228: Int,
  field229: Int,
  field230: Int,
  field231: Int,
  field232: Int,
  field233: Int,
  field234: Int,
  field235: Int,
  field236: Int,
  field237: Int,
  field238: Int,
  field239: Int,
  field240: Int,
  field241: Int,
  field242: Int,
  field243: Int,
  field244: Int,
  field245: Int,
  field246: Int,
  field247: Int,
  field248: Int,
  field249: Int,
  field250: Int,
  field251: Int,
  field252: Int,
  field253: Int,
  field254: Int,
  field255: Int,
  field256: Int,
  field257: Int,
  field258: Int,
  field259: Int,
  field260: Int,
  field261: Int,
  field262: Int,
  field263: Int,
  field264: Int,
  field265: Int,
  field266: Int,
  field267: Int,
  field268: Int,
  field269: Int,
  field270: Int,
  field271: Int,
  field272: Int,
  field273: Int,
  field274: Int,
  field275: Int,
  field276: Int,
  field277: Int,
  field278: Int,
  field279: Int,
  field280: Int,
  field281: Int,
  field282: Int,
  field283: Int,
  field284: Int,
  field285: Int,
  field286: Int,
  field287: Int,
  field288: Int,
  field289: Int,
  field290: Int,
  field291: Int,
  field292: Int,
  field293: Int,
  field294: Int,
  field295: Int,
  field296: Int,
  field297: Int,
  field298: Int,
  field299: Int,
  field300: Int,
  field301: Int,
  field302: Int,
  field303: Int,
  field304: Int,
  field305: Int,
  field306: Int,
  field307: Int,
  field308: Int,
  field309: Int,
  field310: Int,
  field311: Int,
  field312: Int,
  field313: Int,
  field314: Int,
  field315: Int,
  field316: Int,
  field317: Int,
  field318: Int,
  field319: Int,
  field320: Int,
  field321: Int,
  field322: Int,
  field323: Int,
  field324: Int,
  field325: Int,
  field326: Int,
  field327: Int,
  field328: Int,
  field329: Int,
  field330: Int,
  field331: Int,
  field332: Int,
  field333: Int,
  field334: Int,
  field335: Int,
  field336: Int,
  field337: Int,
  field338: Int,
  field339: Int,
  field340: Int,
  field341: Int,
  field342: Int,
  field343: Int,
  field344: Int,
  field345: Int,
  field346: Int,
  field347: Int,
  field348: Int,
  field349: Int,
  field350: Int,
  field351: Int,
  field352: Int,
  field353: Int,
  field354: Int,
  field355: Int,
  field356: Int,
  field357: Int,
  field358: Int,
  field359: Int,
  field360: Int,
  field361: Int,
  field362: Int,
  field363: Int,
  field364: Int,
  field365: Int,
  field366: Int,
  field367: Int,
  field368: Int,
  field369: Int,
  field370: Int,
  field371: Int,
  field372: Int,
  field373: Int,
  field374: Int,
  field375: Int,
  field376: Int,
  field377: Int,
  field378: Int,
  field379: Int,
  field380: Int,
  field381: Int,
  field382: Int,
  field383: Int,
  field384: Int,
  field385: Int,
  field386: Int,
  field387: Int,
  field388: Int,
  field389: Int,
  field390: Int,
  field391: Int,
  field392: Int,
  field393: Int,
  field394: Int,
  field395: Int,
  field396: Int,
  field397: Int,
  field398: Int,
  field399: Int,
  field400: Int,
  field401: Int,
  field402: Int,
  field403: Int,
  field404: Int,
  field405: Int,
  field406: Int,
  field407: Int,
  field408: Int,
  field409: Int,
  field410: Int,
  field411: Int,
  field412: Int,
  field413: Int,
  field414: Int,
  field415: Int,
  field416: Int,
  field417: Int,
  field418: Int,
  field419: Int,
  field420: Int,
  field421: Int,
  field422: Int,
  field423: Int,
  field424: Int,
  field425: Int,
  field426: Int,
  field427: Int,
  field428: Int,
  field429: Int,
  field430: Int,
  field431: Int,
  field432: Int,
  field433: Int,
  field434: Int,
  field435: Int,
  field436: Int,
  field437: Int,
  field438: Int,
  field439: Int,
  field440: Int,
  field441: Int,
  field442: Int,
  field443: Int,
  field444: Int,
  field445: Int,
  field446: Int,
  field447: Int,
  field448: Int,
  field449: Int,
  field450: Int,
  field451: Int,
  field452: Int,
  field453: Int,
  field454: Int,
  field455: Int,
  field456: Int,
  field457: Int,
  field458: Int,
  field459: Int,
  field460: Int,
  field461: Int,
  field462: Int,
  field463: Int,
  field464: Int,
  field465: Int,
  field466: Int,
  field467: Int,
  field468: Int,
  field469: Int,
  field470: Int,
  field471: Int,
  field472: Int,
  field473: Int,
  field474: Int,
  field475: Int,
  field476: Int,
  field477: Int,
  field478: Int,
  field479: Int,
  field480: Int,
  field481: Int,
  field482: Int,
  field483: Int,
  field484: Int,
  field485: Int,
  field486: Int,
  field487: Int,
  field488: Int,
  field489: Int,
  field490: Int,
  field491: Int,
  field492: Int,
  field493: Int,
  field494: Int,
  field495: Int,
  field496: Int,
  field497: Int,
  field498: Int,
  field499: Int,
  field500: Int,
  field501: Int,
  field502: Int,
  field503: Int,
  field504: Int,
  field505: Int,
  field506: Int,
  field507: Int,
  field508: Int,
  field509: Int,
  field510: Int,
  field511: Int,
  field512: Int,
  field513: Int,
  field514: Int,
  field515: Int,
  field516: Int,
  field517: Int,
  field518: Int,
  field519: Int,
  field520: Int,
  field521: Int,
  field522: Int,
  field523: Int,
  field524: Int,
  field525: Int,
  field526: Int,
  field527: Int,
  field528: Int,
  field529: Int,
  field530: Int,
  field531: Int,
  field532: Int,
  field533: Int,
  field534: Int,
  field535: Int,
  field536: Int,
  field537: Int,
  field538: Int,
  field539: Int,
  field540: Int,
  field541: Int,
  field542: Int,
  field543: Int,
  field544: Int,
  field545: Int,
  field546: Int,
  field547: Int,
  field548: Int,
  field549: Int,
  field550: Int,
  field551: Int,
  field552: Int,
  field553: Int,
  field554: Int,
  field555: Int,
  field556: Int,
  field557: Int,
  field558: Int,
  field559: Int,
  field560: Int,
  field561: Int,
  field562: Int,
  field563: Int,
  field564: Int,
  field565: Int,
  field566: Int,
  field567: Int,
  field568: Int,
  field569: Int,
  field570: Int,
  field571: Int,
  field572: Int,
  field573: Int,
  field574: Int,
  field575: Int,
  field576: Int,
  field577: Int,
  field578: Int,
  field579: Int,
  field580: Int,
  field581: Int,
  field582: Int,
  field583: Int,
  field584: Int,
  field585: Int,
  field586: Int,
  field587: Int,
  field588: Int,
  field589: Int,
  field590: Int,
  field591: Int,
  field592: Int,
  field593: Int,
  field594: Int,
  field595: Int,
  field596: Int,
  field597: Int,
  field598: Int,
  field599: Int,
  field600: Int,
  field601: Int,
  field602: Int,
  field603: Int,
  field604: Int,
  field605: Int,
  field606: Int,
  field607: Int,
  field608: Int,
  field609: Int,
  field610: Int,
  field611: Int,
  field612: Int,
  field613: Int,
  field614: Int,
  field615: Int,
  field616: Int,
  field617: Int,
  field618: Int,
  field619: Int,
  field620: Int,
  field621: Int,
  field622: Int,
  field623: Int,
  field624: Int,
  field625: Int,
  field626: Int,
  field627: Int,
  field628: Int,
  field629: Int,
  field630: Int,
  field631: Int,
  field632: Int,
  field633: Int,
  field634: Int,
  field635: Int,
  field636: Int,
  field637: Int,
  field638: Int,
  field639: Int,
  field640: Int,
  field641: Int,
  field642: Int,
  field643: Int,
  field644: Int,
  field645: Int,
  field646: Int,
  field647: Int,
  field648: Int,
  field649: Int,
  field650: Int,
  field651: Int,
  field652: Int,
  field653: Int,
  field654: Int,
  field655: Int,
  field656: Int,
  field657: Int,
  field658: Int,
  field659: Int,
  field660: Int,
  field661: Int,
  field662: Int,
  field663: Int,
  field664: Int,
  field665: Int,
  field666: Int,
  field667: Int,
  field668: Int,
  field669: Int,
  field670: Int,
  field671: Int,
  field672: Int,
  field673: Int,
  field674: Int,
  field675: Int,
  field676: Int,
  field677: Int,
  field678: Int,
  field679: Int,
  field680: Int,
  field681: Int,
  field682: Int,
  field683: Int,
  field684: Int,
  field685: Int,
  field686: Int,
  field687: Int,
  field688: Int,
  field689: Int,
  field690: Int,
  field691: Int,
  field692: Int,
  field693: Int,
  field694: Int,
  field695: Int,
  field696: Int,
  field697: Int,
  field698: Int,
  field699: Int,
  field700: Int,
  field701: Int,
  field702: Int,
  field703: Int,
  field704: Int,
  field705: Int,
  field706: Int,
  field707: Int,
  field708: Int,
  field709: Int,
  field710: Int,
  field711: Int,
  field712: Int,
  field713: Int,
  field714: Int,
  field715: Int,
  field716: Int,
  field717: Int,
  field718: Int,
  field719: Int,
  field720: Int,
  field721: Int,
  field722: Int,
  field723: Int,
  field724: Int,
  field725: Int,
  field726: Int,
  field727: Int,
  field728: Int,
  field729: Int,
  field730: Int,
  field731: Int,
  field732: Int,
  field733: Int,
  field734: Int,
  field735: Int,
  field736: Int,
  field737: Int,
  field738: Int,
  field739: Int,
  field740: Int,
  field741: Int,
  field742: Int,
  field743: Int,
  field744: Int,
  field745: Int,
  field746: Int,
  field747: Int,
  field748: Int,
  field749: Int,
  field750: Int,
  field751: Int,
  field752: Int,
  field753: Int,
  field754: Int,
  field755: Int,
  field756: Int,
  field757: Int,
  field758: Int,
  field759: Int,
  field760: Int,
  field761: Int,
  field762: Int,
  field763: Int,
  field764: Int,
  field765: Int,
  field766: Int,
  field767: Int,
  field768: Int,
  field769: Int,
  field770: Int,
  field771: Int,
  field772: Int,
  field773: Int,
  field774: Int,
  field775: Int,
  field776: Int,
  field777: Int,
  field778: Int,
  field779: Int,
  field780: Int,
  field781: Int,
  field782: Int,
  field783: Int,
  field784: Int,
  field785: Int,
  field786: Int,
  field787: Int,
  field788: Int,
  field789: Int,
  field790: Int,
  field791: Int,
  field792: Int,
  field793: Int,
  field794: Int,
  field795: Int,
  field796: Int,
  field797: Int,
  field798: Int,
  field799: Int,
  field800: Int,
  field801: Int,
  field802: Int,
  field803: Int,
  field804: Int,
  field805: Int,
  field806: Int,
  field807: Int,
  field808: Int,
  field809: Int,
  field810: Int,
  field811: Int,
  field812: Int,
  field813: Int,
  field814: Int,
  field815: Int,
  field816: Int,
  field817: Int,
  field818: Int,
  field819: Int,
  field820: Int,
  field821: Int,
  field822: Int,
  field823: Int,
  field824: Int,
  field825: Int,
  field826: Int,
  field827: Int,
  field828: Int,
  field829: Int,
  field830: Int,
  field831: Int,
  field832: Int,
  field833: Int,
  field834: Int,
  field835: Int,
  field836: Int,
  field837: Int,
  field838: Int,
  field839: Int,
  field840: Int,
  field841: Int,
  field842: Int,
  field843: Int,
  field844: Int,
  field845: Int,
  field846: Int,
  field847: Int,
  field848: Int,
  field849: Int,
  field850: Int,
  field851: Int,
  field852: Int,
  field853: Int,
  field854: Int,
  field855: Int,
  field856: Int,
  field857: Int,
  field858: Int,
  field859: Int,
  field860: Int,
  field861: Int,
  field862: Int,
  field863: Int,
  field864: Int,
  field865: Int,
  field866: Int,
  field867: Int,
  field868: Int,
  field869: Int,
  field870: Int,
  field871: Int,
  field872: Int,
  field873: Int,
  field874: Int,
  field875: Int,
  field876: Int,
  field877: Int,
  field878: Int,
  field879: Int,
  field880: Int,
  field881: Int,
  field882: Int,
  field883: Int,
  field884: Int,
  field885: Int,
  field886: Int,
  field887: Int,
  field888: Int,
  field889: Int,
  field890: Int,
  field891: Int,
  field892: Int,
  field893: Int,
  field894: Int,
  field895: Int,
  field896: Int,
  field897: Int,
  field898: Int,
  field899: Int,
  field900: Int,
  field901: Int,
  field902: Int,
  field903: Int,
  field904: Int,
  field905: Int,
  field906: Int,
  field907: Int,
  field908: Int,
  field909: Int,
  field910: Int,
  field911: Int,
  field912: Int,
  field913: Int,
  field914: Int,
  field915: Int,
  field916: Int,
  field917: Int,
  field918: Int,
  field919: Int,
  field920: Int,
  field921: Int,
  field922: Int,
  field923: Int,
  field924: Int,
  field925: Int,
  field926: Int,
  field927: Int,
  field928: Int,
  field929: Int,
  field930: Int,
  field931: Int,
  field932: Int,
  field933: Int,
  field934: Int,
  field935: Int,
  field936: Int,
  field937: Int,
  field938: Int,
  field939: Int,
  field940: Int,
  field941: Int,
  field942: Int,
  field943: Int,
  field944: Int,
  field945: Int,
  field946: Int,
  field947: Int,
  field948: Int,
  field949: Int,
  field950: Int,
  field951: Int,
  field952: Int,
  field953: Int,
  field954: Int,
  field955: Int,
  field956: Int,
  field957: Int,
  field958: Int,
  field959: Int,
  field960: Int,
  field961: Int,
  field962: Int,
  field963: Int,
  field964: Int,
  field965: Int,
  field966: Int,
  field967: Int,
  field968: Int,
  field969: Int,
  field970: Int,
  field971: Int,
  field972: Int,
  field973: Int,
  field974: Int,
  field975: Int,
  field976: Int,
  field977: Int,
  field978: Int,
  field979: Int,
  field980: Int,
  field981: Int,
  field982: Int,
  field983: Int,
  field984: Int,
  field985: Int,
  field986: Int,
  field987: Int,
  field988: Int,
  field989: Int,
  field990: Int,
  field991: Int,
  field992: Int,
  field993: Int,
  field994: Int,
  field995: Int,
  field996: Int,
  field997: Int,
  field998: Int,
  field999: Int,
  field1000: Int
)

def main() = {
  val p1 = Person(
    1,
    2,
    3,
    4,
    5,
    6,
    7,
    8,
    9,
    10,
    11,
    12,
    13,
    14,
    15,
    16,
    17,
    18,
    19,
    20,
    21,
    22,
    23,
    24,
    25,
    26,
    27,
    28,
    29,
    30,
    31,
    32,
    33,
    34,
    35,
    36,
    37,
    38,
    39,
    40,
    41,
    42,
    43,
    44,
    45,
    46,
    47,
    48,
    49,
    50,
    51,
    52,
    53,
    54,
    55,
    56,
    57,
    58,
    59,
    60,
    61,
    62,
    63,
    64,
    65,
    66,
    67,
    68,
    69,
    70,
    71,
    72,
    73,
    74,
    75,
    76,
    77,
    78,
    79,
    80,
    81,
    82,
    83,
    84,
    85,
    86,
    87,
    88,
    89,
    90,
    91,
    92,
    93,
    94,
    95,
    96,
    97,
    98,
    99,
    100,
    101,
    102,
    103,
    104,
    105,
    106,
    107,
    108,
    109,
    110,
    111,
    112,
    113,
    114,
    115,
    116,
    117,
    118,
    119,
    120,
    121,
    122,
    123,
    124,
    125,
    126,
    127,
    128,
    129,
    130,
    131,
    132,
    133,
    134,
    135,
    136,
    137,
    138,
    139,
    140,
    141,
    142,
    143,
    144,
    145,
    146,
    147,
    148,
    149,
    150,
    151,
    152,
    153,
    154,
    155,
    156,
    157,
    158,
    159,
    160,
    161,
    162,
    163,
    164,
    165,
    166,
    167,
    168,
    169,
    170,
    171,
    172,
    173,
    174,
    175,
    176,
    177,
    178,
    179,
    180,
    181,
    182,
    183,
    184,
    185,
    186,
    187,
    188,
    189,
    190,
    191,
    192,
    193,
    194,
    195,
    196,
    197,
    198,
    199,
    200,
    201,
    202,
    203,
    204,
    205,
    206,
    207,
    208,
    209,
    210,
    211,
    212,
    213,
    214,
    215,
    216,
    217,
    218,
    219,
    220,
    221,
    222,
    223,
    224,
    225,
    226,
    227,
    228,
    229,
    230,
    231,
    232,
    233,
    234,
    235,
    236,
    237,
    238,
    239,
    240,
    241,
    242,
    243,
    244,
    245,
    246,
    247,
    248,
    249,
    250,
    251,
    252,
    253,
    254,
    255,
    256,
    257,
    258,
    259,
    260,
    261,
    262,
    263,
    264,
    265,
    266,
    267,
    268,
    269,
    270,
    271,
    272,
    273,
    274,
    275,
    276,
    277,
    278,
    279,
    280,
    281,
    282,
    283,
    284,
    285,
    286,
    287,
    288,
    289,
    290,
    291,
    292,
    293,
    294,
    295,
    296,
    297,
    298,
    299,
    300,
    301,
    302,
    303,
    304,
    305,
    306,
    307,
    308,
    309,
    310,
    311,
    312,
    313,
    314,
    315,
    316,
    317,
    318,
    319,
    320,
    321,
    322,
    323,
    324,
    325,
    326,
    327,
    328,
    329,
    330,
    331,
    332,
    333,
    334,
    335,
    336,
    337,
    338,
    339,
    340,
    341,
    342,
    343,
    344,
    345,
    346,
    347,
    348,
    349,
    350,
    351,
    352,
    353,
    354,
    355,
    356,
    357,
    358,
    359,
    360,
    361,
    362,
    363,
    364,
    365,
    366,
    367,
    368,
    369,
    370,
    371,
    372,
    373,
    374,
    375,
    376,
    377,
    378,
    379,
    380,
    381,
    382,
    383,
    384,
    385,
    386,
    387,
    388,
    389,
    390,
    391,
    392,
    393,
    394,
    395,
    396,
    397,
    398,
    399,
    400,
    401,
    402,
    403,
    404,
    405,
    406,
    407,
    408,
    409,
    410,
    411,
    412,
    413,
    414,
    415,
    416,
    417,
    418,
    419,
    420,
    421,
    422,
    423,
    424,
    425,
    426,
    427,
    428,
    429,
    430,
    431,
    432,
    433,
    434,
    435,
    436,
    437,
    438,
    439,
    440,
    441,
    442,
    443,
    444,
    445,
    446,
    447,
    448,
    449,
    450,
    451,
    452,
    453,
    454,
    455,
    456,
    457,
    458,
    459,
    460,
    461,
    462,
    463,
    464,
    465,
    466,
    467,
    468,
    469,
    470,
    471,
    472,
    473,
    474,
    475,
    476,
    477,
    478,
    479,
    480,
    481,
    482,
    483,
    484,
    485,
    486,
    487,
    488,
    489,
    490,
    491,
    492,
    493,
    494,
    495,
    496,
    497,
    498,
    499,
    500,
    501,
    502,
    503,
    504,
    505,
    506,
    507,
    508,
    509,
    510,
    511,
    512,
    513,
    514,
    515,
    516,
    517,
    518,
    519,
    520,
    521,
    522,
    523,
    524,
    525,
    526,
    527,
    528,
    529,
    530,
    531,
    532,
    533,
    534,
    535,
    536,
    537,
    538,
    539,
    540,
    541,
    542,
    543,
    544,
    545,
    546,
    547,
    548,
    549,
    550,
    551,
    552,
    553,
    554,
    555,
    556,
    557,
    558,
    559,
    560,
    561,
    562,
    563,
    564,
    565,
    566,
    567,
    568,
    569,
    570,
    571,
    572,
    573,
    574,
    575,
    576,
    577,
    578,
    579,
    580,
    581,
    582,
    583,
    584,
    585,
    586,
    587,
    588,
    589,
    590,
    591,
    592,
    593,
    594,
    595,
    596,
    597,
    598,
    599,
    600,
    601,
    602,
    603,
    604,
    605,
    606,
    607,
    608,
    609,
    610,
    611,
    612,
    613,
    614,
    615,
    616,
    617,
    618,
    619,
    620,
    621,
    622,
    623,
    624,
    625,
    626,
    627,
    628,
    629,
    630,
    631,
    632,
    633,
    634,
    635,
    636,
    637,
    638,
    639,
    640,
    641,
    642,
    643,
    644,
    645,
    646,
    647,
    648,
    649,
    650,
    651,
    652,
    653,
    654,
    655,
    656,
    657,
    658,
    659,
    660,
    661,
    662,
    663,
    664,
    665,
    666,
    667,
    668,
    669,
    670,
    671,
    672,
    673,
    674,
    675,
    676,
    677,
    678,
    679,
    680,
    681,
    682,
    683,
    684,
    685,
    686,
    687,
    688,
    689,
    690,
    691,
    692,
    693,
    694,
    695,
    696,
    697,
    698,
    699,
    700,
    701,
    702,
    703,
    704,
    705,
    706,
    707,
    708,
    709,
    710,
    711,
    712,
    713,
    714,
    715,
    716,
    717,
    718,
    719,
    720,
    721,
    722,
    723,
    724,
    725,
    726,
    727,
    728,
    729,
    730,
    731,
    732,
    733,
    734,
    735,
    736,
    737,
    738,
    739,
    740,
    741,
    742,
    743,
    744,
    745,
    746,
    747,
    748,
    749,
    750,
    751,
    752,
    753,
    754,
    755,
    756,
    757,
    758,
    759,
    760,
    761,
    762,
    763,
    764,
    765,
    766,
    767,
    768,
    769,
    770,
    771,
    772,
    773,
    774,
    775,
    776,
    777,
    778,
    779,
    780,
    781,
    782,
    783,
    784,
    785,
    786,
    787,
    788,
    789,
    790,
    791,
    792,
    793,
    794,
    795,
    796,
    797,
    798,
    799,
    800,
    801,
    802,
    803,
    804,
    805,
    806,
    807,
    808,
    809,
    810,
    811,
    812,
    813,
    814,
    815,
    816,
    817,
    818,
    819,
    820,
    821,
    822,
    823,
    824,
    825,
    826,
    827,
    828,
    829,
    830,
    831,
    832,
    833,
    834,
    835,
    836,
    837,
    838,
    839,
    840,
    841,
    842,
    843,
    844,
    845,
    846,
    847,
    848,
    849,
    850,
    851,
    852,
    853,
    854,
    855,
    856,
    857,
    858,
    859,
    860,
    861,
    862,
    863,
    864,
    865,
    866,
    867,
    868,
    869,
    870,
    871,
    872,
    873,
    874,
    875,
    876,
    877,
    878,
    879,
    880,
    881,
    882,
    883,
    884,
    885,
    886,
    887,
    888,
    889,
    890,
    891,
    892,
    893,
    894,
    895,
    896,
    897,
    898,
    899,
    900,
    901,
    902,
    903,
    904,
    905,
    906,
    907,
    908,
    909,
    910,
    911,
    912,
    913,
    914,
    915,
    916,
    917,
    918,
    919,
    920,
    921,
    922,
    923,
    924,
    925,
    926,
    927,
    928,
    929,
    930,
    931,
    932,
    933,
    934,
    935,
    936,
    937,
    938,
    939,
    940,
    941,
    942,
    943,
    944,
    945,
    946,
    947,
    948,
    949,
    950,
    951,
    952,
    953,
    954,
    955,
    956,
    957,
    958,
    959,
    960,
    961,
    962,
    963,
    964,
    965,
    966,
    967,
    968,
    969,
    970,
    971,
    972,
    973,
    974,
    975,
    976,
    977,
    978,
    979,
    980,
    981,
    982,
    983,
    984,
    985,
    986,
    987,
    988,
    989,
    990,
    991,
    992,
    993,
    994,
    995,
    996,
    997,
    998,
    999,
    1000  
)
  println(p1.field1000)
}

[b-studios]

Sorry @danielflat , but we won't support this.