| library; | 
 | // | 
 | // Problems in library: | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:8:16: Error: Can't spread a value with static type 'Never?'. | 
 | //   var l3 = [...n2]; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:10:16: Error: Can't spread a value with static type 'Null'. | 
 | //   var l5 = [...n3]; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:14:16: Error: Can't spread a value with static type 'Never?'. | 
 | //   var s3 = {...n2, n1}; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:16:16: Error: Can't spread a value with static type 'Null'. | 
 | //   var s5 = {...n3, n1}; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:20:16: Error: Can't spread a value with static type 'Never?'. | 
 | //   var m3 = {...n2, n1: n1}; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:22:16: Error: Can't spread a value with static type 'Null'. | 
 | //   var m5 = {...n3, n1: n1}; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:30:16: Error: Can't spread a value with static type 'N2'. | 
 | //   var l3 = [...n2]; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:32:16: Error: Can't spread a value with static type 'N3'. | 
 | //   var l5 = [...n3]; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:36:16: Error: Can't spread a value with static type 'N2'. | 
 | //   var s3 = {...n2, n1}; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:38:16: Error: Can't spread a value with static type 'N3'. | 
 | //   var s5 = {...n3, n1}; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:42:16: Error: Can't spread a value with static type 'N2'. | 
 | //   var m3 = {...n2, n1: n1}; | 
 | //                ^ | 
 | // | 
 | // pkg/front_end/testcases/nnbd/issue42758.dart:44:16: Error: Can't spread a value with static type 'N3'. | 
 | //   var m5 = {...n3, n1: n1}; | 
 | //                ^ | 
 | // | 
 | import self as self; | 
 | import "dart:core" as core; | 
 | import "dart:collection" as col; | 
 | import "dart:_compact_hash" as _co; | 
 |  | 
 | static method test1(Never n1, Never? n2, Null n3) → dynamic { | 
 |   core::List<Never> l1 = block { | 
 |     final core::List<Never> #t1 = core::List::of<Never>(n1); | 
 |   } =>#t1; | 
 |   core::List<Never> l2 = block { | 
 |     final core::List<Never> #t2 = core::_GrowableList::•<Never>(0); | 
 |     final core::Iterable<Never>? #t3 = n1; | 
 |     if(!(#t3 == null)) | 
 |       #t2.{core::List::addAll}{Invariant}(#t3{core::Iterable<Never>}){(core::Iterable<Never>) → void}; | 
 |   } =>#t2; | 
 |   core::List<dynamic> l3 = core::_GrowableList::_literal1<dynamic>(invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:8:16: Error: Can't spread a value with static type 'Never?'. | 
 |   var l3 = [...n2]; | 
 |                ^"); | 
 |   core::List<Never> l4 = block { | 
 |     final core::List<Never> #t4 = core::_GrowableList::•<Never>(0); | 
 |     final core::Iterable<Never>? #t5 = n2; | 
 |     if(!(#t5 == null)) | 
 |       #t4.{core::List::addAll}{Invariant}(#t5{core::Iterable<Never>}){(core::Iterable<Never>) → void}; | 
 |   } =>#t4; | 
 |   core::List<dynamic> l5 = core::_GrowableList::_literal1<dynamic>(invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:10:16: Error: Can't spread a value with static type 'Null'. | 
 |   var l5 = [...n3]; | 
 |                ^"); | 
 |   core::List<Never> l6 = block { | 
 |     final core::List<Never> #t6 = core::_GrowableList::•<Never>(0); | 
 |     final core::Iterable<Never>? #t7 = n3; | 
 |     if(!(#t7 == null)) | 
 |       #t6.{core::List::addAll}{Invariant}(#t7{core::Iterable<Never>}){(core::Iterable<Never>) → void}; | 
 |   } =>#t6; | 
 |   core::Set<Never> s1 = block { | 
 |     final core::Set<Never> #t8 = col::LinkedHashSet::of<Never>(n1); | 
 |     #t8.{core::Set::add}{Invariant}(n1){(Never) → core::bool}; | 
 |   } =>#t8; | 
 |   core::Set<Never> s2 = block { | 
 |     final core::Set<Never> #t9 = new _co::_Set::•<Never>(); | 
 |     final core::Iterable<Never>? #t10 = n1; | 
 |     if(!(#t10 == null)) | 
 |       #t9.{core::Set::addAll}{Invariant}(#t10{core::Iterable<Never>}){(core::Iterable<Never>) → void}; | 
 |     #t9.{core::Set::add}{Invariant}(n1){(Never) → core::bool}; | 
 |   } =>#t9; | 
 |   core::Set<dynamic> s3 = block { | 
 |     final core::Set<dynamic> #t11 = new _co::_Set::•<dynamic>(); | 
 |     #t11.{core::Set::add}{Invariant}(invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:14:16: Error: Can't spread a value with static type 'Never?'. | 
 |   var s3 = {...n2, n1}; | 
 |                ^"){(dynamic) → core::bool}; | 
 |     #t11.{core::Set::add}{Invariant}(n1){(dynamic) → core::bool}; | 
 |   } =>#t11; | 
 |   core::Set<Never> s4 = block { | 
 |     final core::Set<Never> #t12 = new _co::_Set::•<Never>(); | 
 |     final core::Iterable<Never>? #t13 = n2; | 
 |     if(!(#t13 == null)) | 
 |       #t12.{core::Set::addAll}{Invariant}(#t13{core::Iterable<Never>}){(core::Iterable<Never>) → void}; | 
 |     #t12.{core::Set::add}{Invariant}(n1){(Never) → core::bool}; | 
 |   } =>#t12; | 
 |   core::Set<dynamic> s5 = block { | 
 |     final core::Set<dynamic> #t14 = new _co::_Set::•<dynamic>(); | 
 |     #t14.{core::Set::add}{Invariant}(invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:16:16: Error: Can't spread a value with static type 'Null'. | 
 |   var s5 = {...n3, n1}; | 
 |                ^"){(dynamic) → core::bool}; | 
 |     #t14.{core::Set::add}{Invariant}(n1){(dynamic) → core::bool}; | 
 |   } =>#t14; | 
 |   core::Set<Never> s6 = block { | 
 |     final core::Set<Never> #t15 = new _co::_Set::•<Never>(); | 
 |     final core::Iterable<Never>? #t16 = n3; | 
 |     if(!(#t16 == null)) | 
 |       #t15.{core::Set::addAll}{Invariant}(#t16{core::Iterable<Never>}){(core::Iterable<Never>) → void}; | 
 |     #t15.{core::Set::add}{Invariant}(n1){(Never) → core::bool}; | 
 |   } =>#t15; | 
 |   core::Map<Never, Never> m1 = block { | 
 |     final core::Map<Never, Never> #t17 = col::LinkedHashMap::of<Never, Never>(n1); | 
 |     #t17.{core::Map::[]=}{Invariant}(n1, n1){(Never, Never) → void}; | 
 |   } =>#t17; | 
 |   core::Map<Never, Never> m2 = block { | 
 |     final core::Map<Never, Never> #t18 = <Never, Never>{}; | 
 |     final core::Map<Never, Never>? #t19 = n1; | 
 |     if(!(#t19 == null)) | 
 |       #t18.{core::Map::addAll}{Invariant}(#t19{core::Map<Never, Never>}){(core::Map<Never, Never>) → void}; | 
 |     #t18.{core::Map::[]=}{Invariant}(n1, n1){(Never, Never) → void}; | 
 |   } =>#t18; | 
 |   core::Map<dynamic, dynamic> m3 = <dynamic, dynamic>{invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:20:16: Error: Can't spread a value with static type 'Never?'. | 
 |   var m3 = {...n2, n1: n1}; | 
 |                ^": null, n1: n1}; | 
 |   core::Map<Never, Never> m4 = block { | 
 |     final core::Map<Never, Never> #t20 = <Never, Never>{}; | 
 |     final core::Map<Never, Never>? #t21 = n2; | 
 |     if(!(#t21 == null)) | 
 |       #t20.{core::Map::addAll}{Invariant}(#t21{core::Map<Never, Never>}){(core::Map<Never, Never>) → void}; | 
 |     #t20.{core::Map::[]=}{Invariant}(n1, n1){(Never, Never) → void}; | 
 |   } =>#t20; | 
 |   core::Map<dynamic, dynamic> m5 = <dynamic, dynamic>{invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:22:16: Error: Can't spread a value with static type 'Null'. | 
 |   var m5 = {...n3, n1: n1}; | 
 |                ^": null, n1: n1}; | 
 |   core::Map<Never, Never> m6 = block { | 
 |     final core::Map<Never, Never> #t22 = <Never, Never>{}; | 
 |     final core::Map<Never, Never>? #t23 = n3; | 
 |     if(!(#t23 == null)) | 
 |       #t22.{core::Map::addAll}{Invariant}(#t23{core::Map<Never, Never>}){(core::Map<Never, Never>) → void}; | 
 |     #t22.{core::Map::[]=}{Invariant}(n1, n1){(Never, Never) → void}; | 
 |   } =>#t22; | 
 | } | 
 | static method test2<N1 extends Never, N2 extends Never?, N3 extends Null>(self::test2::N1 n1, self::test2::N2% n2, self::test2::N3% n3) → dynamic { | 
 |   core::List<Never> l1 = block { | 
 |     final core::List<Never> #t24 = core::List::of<Never>(n1); | 
 |   } =>#t24; | 
 |   core::List<Never> l2 = block { | 
 |     final core::List<Never> #t25 = core::_GrowableList::•<Never>(0); | 
 |     final core::Iterable<Never>? #t26 = n1; | 
 |     if(!(#t26 == null)) | 
 |       #t25.{core::List::addAll}{Invariant}(#t26{core::Iterable<Never>}){(core::Iterable<Never>) → void}; | 
 |   } =>#t25; | 
 |   core::List<dynamic> l3 = core::_GrowableList::_literal1<dynamic>(invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:30:16: Error: Can't spread a value with static type 'N2'. | 
 |   var l3 = [...n2]; | 
 |                ^"); | 
 |   core::List<Never> l4 = block { | 
 |     final core::List<Never> #t27 = core::_GrowableList::•<Never>(0); | 
 |     final core::Iterable<Never>? #t28 = n2; | 
 |     if(!(#t28 == null)) | 
 |       #t27.{core::List::addAll}{Invariant}(#t28{core::Iterable<Never>}){(core::Iterable<Never>) → void}; | 
 |   } =>#t27; | 
 |   core::List<dynamic> l5 = core::_GrowableList::_literal1<dynamic>(invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:32:16: Error: Can't spread a value with static type 'N3'. | 
 |   var l5 = [...n3]; | 
 |                ^"); | 
 |   core::List<Never> l6 = block { | 
 |     final core::List<Never> #t29 = core::_GrowableList::•<Never>(0); | 
 |     final core::Iterable<Never>? #t30 = n3; | 
 |     if(!(#t30 == null)) | 
 |       #t29.{core::List::addAll}{Invariant}(#t30{core::Iterable<Never>}){(core::Iterable<Never>) → void}; | 
 |   } =>#t29; | 
 |   core::Set<self::test2::N1> s1 = block { | 
 |     final core::Set<self::test2::N1> #t31 = col::LinkedHashSet::of<self::test2::N1>(n1); | 
 |     #t31.{core::Set::add}{Invariant}(n1){(self::test2::N1) → core::bool}; | 
 |   } =>#t31; | 
 |   core::Set<self::test2::N1> s2 = block { | 
 |     final core::Set<self::test2::N1> #t32 = new _co::_Set::•<self::test2::N1>(); | 
 |     final core::Iterable<self::test2::N1>? #t33 = n1; | 
 |     if(!(#t33 == null)) | 
 |       #t32.{core::Set::addAll}{Invariant}(#t33{core::Iterable<self::test2::N1>}){(core::Iterable<self::test2::N1>) → void}; | 
 |     #t32.{core::Set::add}{Invariant}(n1){(self::test2::N1) → core::bool}; | 
 |   } =>#t32; | 
 |   core::Set<dynamic> s3 = block { | 
 |     final core::Set<dynamic> #t34 = new _co::_Set::•<dynamic>(); | 
 |     #t34.{core::Set::add}{Invariant}(invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:36:16: Error: Can't spread a value with static type 'N2'. | 
 |   var s3 = {...n2, n1}; | 
 |                ^"){(dynamic) → core::bool}; | 
 |     #t34.{core::Set::add}{Invariant}(n1){(dynamic) → core::bool}; | 
 |   } =>#t34; | 
 |   core::Set<self::test2::N1> s4 = block { | 
 |     final core::Set<self::test2::N1> #t35 = new _co::_Set::•<self::test2::N1>(); | 
 |     final core::Iterable<self::test2::N1>? #t36 = n2; | 
 |     if(!(#t36 == null)) | 
 |       #t35.{core::Set::addAll}{Invariant}(#t36{core::Iterable<self::test2::N1>}){(core::Iterable<self::test2::N1>) → void}; | 
 |     #t35.{core::Set::add}{Invariant}(n1){(self::test2::N1) → core::bool}; | 
 |   } =>#t35; | 
 |   core::Set<dynamic> s5 = block { | 
 |     final core::Set<dynamic> #t37 = new _co::_Set::•<dynamic>(); | 
 |     #t37.{core::Set::add}{Invariant}(invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:38:16: Error: Can't spread a value with static type 'N3'. | 
 |   var s5 = {...n3, n1}; | 
 |                ^"){(dynamic) → core::bool}; | 
 |     #t37.{core::Set::add}{Invariant}(n1){(dynamic) → core::bool}; | 
 |   } =>#t37; | 
 |   core::Set<self::test2::N1> s6 = block { | 
 |     final core::Set<self::test2::N1> #t38 = new _co::_Set::•<self::test2::N1>(); | 
 |     final core::Iterable<self::test2::N1>? #t39 = n3; | 
 |     if(!(#t39 == null)) | 
 |       #t38.{core::Set::addAll}{Invariant}(#t39{core::Iterable<self::test2::N1>}){(core::Iterable<self::test2::N1>) → void}; | 
 |     #t38.{core::Set::add}{Invariant}(n1){(self::test2::N1) → core::bool}; | 
 |   } =>#t38; | 
 |   core::Map<self::test2::N1, self::test2::N1> m1 = block { | 
 |     final core::Map<self::test2::N1, self::test2::N1> #t40 = col::LinkedHashMap::of<self::test2::N1, self::test2::N1>(n1); | 
 |     #t40.{core::Map::[]=}{Invariant}(n1, n1){(self::test2::N1, self::test2::N1) → void}; | 
 |   } =>#t40; | 
 |   core::Map<self::test2::N1, self::test2::N1> m2 = block { | 
 |     final core::Map<self::test2::N1, self::test2::N1> #t41 = <self::test2::N1, self::test2::N1>{}; | 
 |     final core::Map<self::test2::N1, self::test2::N1>? #t42 = n1; | 
 |     if(!(#t42 == null)) | 
 |       #t41.{core::Map::addAll}{Invariant}(#t42{core::Map<self::test2::N1, self::test2::N1>}){(core::Map<self::test2::N1, self::test2::N1>) → void}; | 
 |     #t41.{core::Map::[]=}{Invariant}(n1, n1){(self::test2::N1, self::test2::N1) → void}; | 
 |   } =>#t41; | 
 |   core::Map<dynamic, dynamic> m3 = <dynamic, dynamic>{invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:42:16: Error: Can't spread a value with static type 'N2'. | 
 |   var m3 = {...n2, n1: n1}; | 
 |                ^": null, n1: n1}; | 
 |   core::Map<self::test2::N1, self::test2::N1> m4 = block { | 
 |     final core::Map<self::test2::N1, self::test2::N1> #t43 = <self::test2::N1, self::test2::N1>{}; | 
 |     final core::Map<self::test2::N1, self::test2::N1>? #t44 = n2; | 
 |     if(!(#t44 == null)) | 
 |       #t43.{core::Map::addAll}{Invariant}(#t44{core::Map<self::test2::N1, self::test2::N1>}){(core::Map<self::test2::N1, self::test2::N1>) → void}; | 
 |     #t43.{core::Map::[]=}{Invariant}(n1, n1){(self::test2::N1, self::test2::N1) → void}; | 
 |   } =>#t43; | 
 |   core::Map<dynamic, dynamic> m5 = <dynamic, dynamic>{invalid-expression "pkg/front_end/testcases/nnbd/issue42758.dart:44:16: Error: Can't spread a value with static type 'N3'. | 
 |   var m5 = {...n3, n1: n1}; | 
 |                ^": null, n1: n1}; | 
 |   core::Map<self::test2::N1, self::test2::N1> m6 = block { | 
 |     final core::Map<self::test2::N1, self::test2::N1> #t45 = <self::test2::N1, self::test2::N1>{}; | 
 |     final core::Map<self::test2::N1, self::test2::N1>? #t46 = n3; | 
 |     if(!(#t46 == null)) | 
 |       #t45.{core::Map::addAll}{Invariant}(#t46{core::Map<self::test2::N1, self::test2::N1>}){(core::Map<self::test2::N1, self::test2::N1>) → void}; | 
 |     #t45.{core::Map::[]=}{Invariant}(n1, n1){(self::test2::N1, self::test2::N1) → void}; | 
 |   } =>#t45; | 
 | } | 
 | static method main() → dynamic {} |