| library; | 
 | import self as self; | 
 | import "dart:core" as core; | 
 |  | 
 | class Ext extends core::Object /*hasConstConstructor*/  { | 
 |   final field core::String _; | 
 |   const constructor •() → self::Ext | 
 |     : assert(!(self::maybe == null), "Must not be null"), self::Ext::_ = "OK", super core::Object::•() | 
 |     ; | 
 |   static method _#new#tearOff() → self::Ext | 
 |     return new self::Ext::•(); | 
 | } | 
 | static const field core::String? maybe = const core::bool::fromEnvironment("not there") ?{core::String?} "string" : null; | 
 | static method main() → void | 
 |   ; | 
 |  | 
 |  | 
 | Extra constant evaluation status: | 
 | Evaluated with empty environment: Not @ org-dartlang-testcase:///issue56803b.dart:11:22 -> BoolConstant(false) | 
 | Evaluated with empty environment: EqualsNull @ org-dartlang-testcase:///issue56803b.dart:11:22 -> BoolConstant(true) | 
 | Evaluated with empty environment: StaticGet @ org-dartlang-testcase:///issue56803b.dart:11:16 -> NullConstant(null) | 
 | Evaluated with empty environment: ConditionalExpression @ org-dartlang-testcase:///issue56803b.dart:5:57 -> NullConstant(null) | 
 | Evaluated with empty environment: FactoryConstructorInvocation @ org-dartlang-testcase:///issue56803b.dart:5:28 -> BoolConstant(false) | 
 | Extra constant evaluation: evaluated: 6, effectively constant: 5 |