library /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;
import "dart:_internal" as _in;

class C extends core::Object {
  field core::int? _#C#a = _in::createSentinel<core::int>();
  field core::int? _#C#b = _in::createSentinel<core::int>();
  field core::int? _#C#c = _in::createSentinel<core::int>();
  field core::int? _#C#d = _in::createSentinel<core::int>();
  synthetic constructor •() → self::C
    : super core::Object::•()
    ;
  get a() → core::int
    return let final core::int? #t1 = this.{self::C::_#C#a}{core::int?} in _in::isSentinel(#t1) ?{core::int} throw new _in::LateError::fieldNI("a") : #t1{core::int};
  set a(core::int #t2) → void
    this.{self::C::_#C#a} = #t2;
  get b() → core::int
    return let final core::int? #t3 = this.{self::C::_#C#b}{core::int?} in _in::isSentinel(#t3) ?{core::int} throw new _in::LateError::fieldNI("b") : #t3{core::int};
  set b(core::int #t4) → void
    if(_in::isSentinel(this.{self::C::_#C#b}{core::int?}))
      this.{self::C::_#C#b} = #t4;
    else
      throw new _in::LateError::fieldAI("b");
  get c() → core::int
    return let final core::int? #t5 = this.{self::C::_#C#c}{core::int?} in _in::isSentinel(#t5) ?{core::int} this.{self::C::_#C#c} = 1.{core::int::unary-}(){() → core::int} : #t5{core::int};
  set c(core::int #t6) → void
    this.{self::C::_#C#c} = #t6;
  get d() → core::int
    return let final core::int #t7 = this.{self::C::_#C#d}{core::int?} in _in::isSentinel(#t7) ?{core::int} let final core::int #t8 = 1.{core::int::unary-}(){() → core::int} in _in::isSentinel(this.{self::C::_#C#d}{core::int?}) ?{core::int} this.{self::C::_#C#d} = #t8 : throw new _in::LateError::fieldADI("d") : #t7;
}
static field self::C c = new self::C::•();
static method main() → void {
  self::testUninitializedNonFinalInstanceField();
  self::testUninitializedFinalInstanceField();
  self::testInitializedNonFinalInstanceField();
  self::testInitializedFinalInstanceField();
}
static method testUninitializedNonFinalInstanceField() → void {
  core::print(self::c.{self::C::a}{core::int});
  self::c.{self::C::a} = 42;
  core::print(self::c.{self::C::a}{core::int});
}
static method testUninitializedFinalInstanceField() → void {
  core::print(self::c.{self::C::b}{core::int});
  self::c.{self::C::b} = 42;
  core::print(self::c.{self::C::b}{core::int});
}
static method testInitializedNonFinalInstanceField() → void {
  core::print(self::c.{self::C::c}{core::int});
  self::c.{self::C::c} = 42;
  core::print(self::c.{self::C::c}{core::int});
}
static method testInitializedFinalInstanceField() → void {
  core::print(self::c.{self::C::d}{core::int});
}