library;
//
// Problems in library:
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:22:7: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   int instanceField = 1;
//       ^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:23:7: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   int instanceField = 2;
//       ^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:25:7: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   int instanceFieldAndSetter1 = 1;
//       ^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:33:7: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   int instanceFieldAndSetter2 = 1;
//       ^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:35:18: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   late final int instanceLateFinalFieldAndSetter1;
//                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:43:18: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   late final int instanceLateFinalFieldAndSetter2;
//                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:45:13: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   final int instanceDuplicateFieldAndSetter = 1;
//             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:46:13: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   final int instanceDuplicateFieldAndSetter = 2;
//             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:51:13: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   final int instanceFieldAndDuplicateSetter = 1;
//             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:60:13: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   final int instanceDuplicateFieldAndDuplicateSetter = 1;
//             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:61:13: Error: Extensions can't declare instance fields
// Try removing the field declaration or making it a static field
//   final int instanceDuplicateFieldAndDuplicateSetter = 2;
//             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:9:7: Error: 'instanceMethod' is already declared in this scope.
//   int instanceMethod() => 2;
//       ^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:8:7: Context: Previous declaration of 'instanceMethod'.
//   int instanceMethod() => 1;
//       ^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:12:11: Error: 'instanceGetter' is already declared in this scope.
//   int get instanceGetter => 2;
//           ^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:11:11: Context: Previous declaration of 'instanceGetter'.
//   int get instanceGetter => 1;
//           ^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:18:12: Error: 'instanceSetter' is already declared in this scope.
//   void set instanceSetter(value) {
//            ^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:14:12: Context: Previous declaration of 'instanceSetter'.
//   void set instanceSetter(value) {
//            ^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:23:7: Error: 'instanceField' is already declared in this scope.
//   int instanceField = 2;
//       ^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:22:7: Context: Previous declaration of 'instanceField'.
//   int instanceField = 1;
//       ^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:26:12: Error: Conflicts with the implicit setter of the field 'instanceFieldAndSetter1'.
//   void set instanceFieldAndSetter1(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:25:7: Context: Field 'instanceFieldAndSetter1' with the implicit setter.
//   int instanceFieldAndSetter1 = 1;
//       ^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:33:7: Error: Conflicts with setter 'instanceFieldAndSetter2'.
//   int instanceFieldAndSetter2 = 1;
//       ^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:30:12: Context: Conflicting setter 'instanceFieldAndSetter2'.
//   void set instanceFieldAndSetter2(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:36:12: Error: Conflicts with the implicit setter of the field 'instanceLateFinalFieldAndSetter1'.
//   void set instanceLateFinalFieldAndSetter1(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:35:18: Context: Field 'instanceLateFinalFieldAndSetter1' with the implicit setter.
//   late final int instanceLateFinalFieldAndSetter1;
//                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:43:18: Error: Conflicts with setter 'instanceLateFinalFieldAndSetter2'.
//   late final int instanceLateFinalFieldAndSetter2;
//                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:40:12: Context: Conflicting setter 'instanceLateFinalFieldAndSetter2'.
//   void set instanceLateFinalFieldAndSetter2(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:46:13: Error: 'instanceDuplicateFieldAndSetter' is already declared in this scope.
//   final int instanceDuplicateFieldAndSetter = 2;
//             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:45:13: Context: Previous declaration of 'instanceDuplicateFieldAndSetter'.
//   final int instanceDuplicateFieldAndSetter = 1;
//             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:56:12: Error: 'instanceFieldAndDuplicateSetter' is already declared in this scope.
//   void set instanceFieldAndDuplicateSetter(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:52:12: Context: Previous declaration of 'instanceFieldAndDuplicateSetter'.
//   void set instanceFieldAndDuplicateSetter(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:61:13: Error: 'instanceDuplicateFieldAndDuplicateSetter' is already declared in this scope.
//   final int instanceDuplicateFieldAndDuplicateSetter = 2;
//             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:60:13: Context: Previous declaration of 'instanceDuplicateFieldAndDuplicateSetter'.
//   final int instanceDuplicateFieldAndDuplicateSetter = 1;
//             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:66:12: Error: 'instanceDuplicateFieldAndDuplicateSetter' is already declared in this scope.
//   void set instanceDuplicateFieldAndDuplicateSetter(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:62:12: Context: Previous declaration of 'instanceDuplicateFieldAndDuplicateSetter'.
//   void set instanceDuplicateFieldAndDuplicateSetter(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:71:12: Error: The setter conflicts with declaration 'instanceMethodAndSetter1'.
//   void set instanceMethodAndSetter1(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:70:7: Context: Conflicting declaration 'instanceMethodAndSetter1'.
//   int instanceMethodAndSetter1() => 1;
//       ^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:78:7: Error: The declaration conflicts with setter 'instanceMethodAndSetter2'.
//   int instanceMethodAndSetter2() => 1;
//       ^^^^^^^^^^^^^^^^^^^^^^^^
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:75:12: Context: Conflicting setter 'instanceMethodAndSetter2'.
//   void set instanceMethodAndSetter2(int value) {
//            ^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:83:5: Error: The method 'instanceMethod' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing method, or defining a method named 'instanceMethod'.
//   c.instanceMethod();
//     ^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:84:6: Error: The getter 'instanceMethod' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceMethod'.
//   (c.instanceMethod)();
//      ^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:85:5: Error: The getter 'instanceGetter' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceGetter'.
//   c.instanceGetter;
//     ^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:86:5: Error: The setter 'instanceSetter' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceSetter'.
//   c.instanceSetter = 0;
//     ^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:87:5: Error: The getter 'instanceField' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceField'.
//   c.instanceField;
//     ^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:88:5: Error: The setter 'instanceField' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceField'.
//   c.instanceField = 0;
//     ^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:89:5: Error: The getter 'instanceFieldAndSetter1' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceFieldAndSetter1'.
//   c.instanceFieldAndSetter1;
//     ^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:90:5: Error: The setter 'instanceFieldAndSetter1' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceFieldAndSetter1'.
//   c.instanceFieldAndSetter1 = 0;
//     ^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:91:5: Error: The getter 'instanceFieldAndSetter2' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceFieldAndSetter2'.
//   c.instanceFieldAndSetter2;
//     ^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:92:5: Error: The setter 'instanceFieldAndSetter2' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceFieldAndSetter2'.
//   c.instanceFieldAndSetter2 = 0;
//     ^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:93:5: Error: The getter 'instanceLateFinalFieldAndSetter1' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceLateFinalFieldAndSetter1'.
//   c.instanceLateFinalFieldAndSetter1;
//     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:94:5: Error: The setter 'instanceLateFinalFieldAndSetter1' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceLateFinalFieldAndSetter1'.
//   c.instanceLateFinalFieldAndSetter1 = 0;
//     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:95:5: Error: The getter 'instanceLateFinalFieldAndSetter2' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceLateFinalFieldAndSetter2'.
//   c.instanceLateFinalFieldAndSetter2;
//     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:96:5: Error: The setter 'instanceLateFinalFieldAndSetter2' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceLateFinalFieldAndSetter2'.
//   c.instanceLateFinalFieldAndSetter2 = 0;
//     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:97:5: Error: The getter 'instanceDuplicateFieldAndSetter' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceDuplicateFieldAndSetter'.
//   c.instanceDuplicateFieldAndSetter;
//     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:98:5: Error: The getter 'instanceFieldAndDuplicateSetter' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceFieldAndDuplicateSetter'.
//   c.instanceFieldAndDuplicateSetter;
//     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:99:5: Error: The setter 'instanceFieldAndDuplicateSetter' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceFieldAndDuplicateSetter'.
//   c.instanceFieldAndDuplicateSetter = 0;
//     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:100:5: Error: The getter 'instanceDuplicateFieldAndDuplicateSetter' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceDuplicateFieldAndDuplicateSetter'.
//   c.instanceDuplicateFieldAndDuplicateSetter;
//     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
// pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:101:5: Error: The setter 'instanceDuplicateFieldAndDuplicateSetter' isn't defined for the class 'int'.
// Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceDuplicateFieldAndDuplicateSetter'.
//   c.instanceDuplicateFieldAndDuplicateSetter = 0;
//     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//
import self as self;
import "dart:core" as core;

extension Extension on core::int {
  method instanceMethod = self::Extension|instanceMethod;
  method tearoff instanceMethod = self::Extension|get#instanceMethod;
  get instanceGetter = self::Extension|get#instanceGetter;
  field instanceField = self::Extension|instanceField;
  field instanceFieldAndSetter1 = self::Extension|instanceFieldAndSetter1;
  field instanceFieldAndSetter2 = self::Extension|instanceFieldAndSetter2;
  field instanceLateFinalFieldAndSetter1 = self::Extension|instanceLateFinalFieldAndSetter1;
  field instanceLateFinalFieldAndSetter2 = self::Extension|instanceLateFinalFieldAndSetter2;
  field instanceDuplicateFieldAndSetter = self::Extension|instanceDuplicateFieldAndSetter;
  field instanceFieldAndDuplicateSetter = self::Extension|instanceFieldAndDuplicateSetter;
  field instanceDuplicateFieldAndDuplicateSetter = self::Extension|instanceDuplicateFieldAndDuplicateSetter;
  method instanceMethodAndSetter1 = self::Extension|instanceMethodAndSetter1;
  method tearoff instanceMethodAndSetter1 = self::Extension|get#instanceMethodAndSetter1;
  method instanceMethodAndSetter2 = self::Extension|instanceMethodAndSetter2;
  method tearoff instanceMethodAndSetter2 = self::Extension|get#instanceMethodAndSetter2;
  set instanceSetter = self::Extension|set#instanceSetter;
  set instanceDuplicateFieldAndSetter = self::Extension|set#instanceDuplicateFieldAndSetter;
  set instanceFieldAndDuplicateSetter = self::Extension|set#instanceFieldAndDuplicateSetter;
  set instanceDuplicateFieldAndDuplicateSetter = self::Extension|set#instanceDuplicateFieldAndDuplicateSetter;
  set instanceMethodAndSetter1 = self::Extension|set#instanceMethodAndSetter1;
  set instanceMethodAndSetter2 = self::Extension|set#instanceMethodAndSetter2;
}
static field dynamic result;
static field core::int Extension|instanceField = 1;
static field core::int Extension|instanceFieldAndSetter1 = 1;
static field core::int Extension|instanceFieldAndSetter2 = 1;
late static final [setter] field core::int Extension|instanceLateFinalFieldAndSetter1;
late static final [setter] field core::int Extension|instanceLateFinalFieldAndSetter2;
static final field core::int Extension|instanceDuplicateFieldAndSetter = 1;
static final field core::int Extension|instanceFieldAndDuplicateSetter = 1;
static final field core::int Extension|instanceDuplicateFieldAndDuplicateSetter = 1;
static extension-member method Extension|instanceMethod(lowered final core::int #this) → core::int
  return 1;
static extension-member method Extension|get#instanceMethod(lowered final core::int #this) → () → core::int
  return () → core::int => self::Extension|instanceMethod(#this);
static extension-member method Extension|get#instanceGetter(lowered final core::int #this) → core::int
  return 1;
static extension-member method Extension|set#instanceSetter(lowered final core::int #this, dynamic value) → void {
  self::result = 1;
}
static extension-member method Extension|set#instanceDuplicateFieldAndSetter(lowered final core::int #this, core::int value) → void {
  self::result = 3;
}
static extension-member method Extension|set#instanceFieldAndDuplicateSetter(lowered final core::int #this, core::int value) → void {
  self::result = 2;
}
static extension-member method Extension|set#instanceDuplicateFieldAndDuplicateSetter(lowered final core::int #this, core::int value) → void {
  self::result = 3;
}
static extension-member method Extension|instanceMethodAndSetter1(lowered final core::int #this) → core::int
  return 1;
static extension-member method Extension|get#instanceMethodAndSetter1(lowered final core::int #this) → () → core::int
  return () → core::int => self::Extension|instanceMethodAndSetter1(#this);
static extension-member method Extension|set#instanceMethodAndSetter1(lowered final core::int #this, core::int value) → void {
  self::result = 2;
}
static extension-member method Extension|set#instanceMethodAndSetter2(lowered final core::int #this, core::int value) → void {
  self::result = 2;
}
static extension-member method Extension|instanceMethodAndSetter2(lowered final core::int #this) → core::int
  return 1;
static extension-member method Extension|get#instanceMethodAndSetter2(lowered final core::int #this) → () → core::int
  return () → core::int => self::Extension|instanceMethodAndSetter2(#this);
static method test() → dynamic {
  core::int c = 0;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:83:5: Error: The method 'instanceMethod' isn't defined for the class 'int'.
Try correcting the name to the name of an existing method, or defining a method named 'instanceMethod'.
  c.instanceMethod();
    ^^^^^^^^^^^^^^" in c{<unresolved>}.instanceMethod();
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:84:6: Error: The getter 'instanceMethod' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceMethod'.
  (c.instanceMethod)();
     ^^^^^^^^^^^^^^" in c{<unresolved>}.instanceMethod{dynamic}();
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:85:5: Error: The getter 'instanceGetter' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceGetter'.
  c.instanceGetter;
    ^^^^^^^^^^^^^^" in c{<unresolved>}.instanceGetter;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:86:5: Error: The setter 'instanceSetter' isn't defined for the class 'int'.
Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceSetter'.
  c.instanceSetter = 0;
    ^^^^^^^^^^^^^^" in c.{<unresolved>}instanceSetter = 0;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:87:5: Error: The getter 'instanceField' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceField'.
  c.instanceField;
    ^^^^^^^^^^^^^" in c{<unresolved>}.instanceField;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:88:5: Error: The setter 'instanceField' isn't defined for the class 'int'.
Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceField'.
  c.instanceField = 0;
    ^^^^^^^^^^^^^" in c.{<unresolved>}instanceField = 0;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:89:5: Error: The getter 'instanceFieldAndSetter1' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceFieldAndSetter1'.
  c.instanceFieldAndSetter1;
    ^^^^^^^^^^^^^^^^^^^^^^^" in c{<unresolved>}.instanceFieldAndSetter1;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:90:5: Error: The setter 'instanceFieldAndSetter1' isn't defined for the class 'int'.
Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceFieldAndSetter1'.
  c.instanceFieldAndSetter1 = 0;
    ^^^^^^^^^^^^^^^^^^^^^^^" in c.{<unresolved>}instanceFieldAndSetter1 = 0;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:91:5: Error: The getter 'instanceFieldAndSetter2' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceFieldAndSetter2'.
  c.instanceFieldAndSetter2;
    ^^^^^^^^^^^^^^^^^^^^^^^" in c{<unresolved>}.instanceFieldAndSetter2;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:92:5: Error: The setter 'instanceFieldAndSetter2' isn't defined for the class 'int'.
Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceFieldAndSetter2'.
  c.instanceFieldAndSetter2 = 0;
    ^^^^^^^^^^^^^^^^^^^^^^^" in c.{<unresolved>}instanceFieldAndSetter2 = 0;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:93:5: Error: The getter 'instanceLateFinalFieldAndSetter1' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceLateFinalFieldAndSetter1'.
  c.instanceLateFinalFieldAndSetter1;
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" in c{<unresolved>}.instanceLateFinalFieldAndSetter1;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:94:5: Error: The setter 'instanceLateFinalFieldAndSetter1' isn't defined for the class 'int'.
Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceLateFinalFieldAndSetter1'.
  c.instanceLateFinalFieldAndSetter1 = 0;
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" in c.{<unresolved>}instanceLateFinalFieldAndSetter1 = 0;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:95:5: Error: The getter 'instanceLateFinalFieldAndSetter2' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceLateFinalFieldAndSetter2'.
  c.instanceLateFinalFieldAndSetter2;
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" in c{<unresolved>}.instanceLateFinalFieldAndSetter2;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:96:5: Error: The setter 'instanceLateFinalFieldAndSetter2' isn't defined for the class 'int'.
Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceLateFinalFieldAndSetter2'.
  c.instanceLateFinalFieldAndSetter2 = 0;
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" in c.{<unresolved>}instanceLateFinalFieldAndSetter2 = 0;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:97:5: Error: The getter 'instanceDuplicateFieldAndSetter' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceDuplicateFieldAndSetter'.
  c.instanceDuplicateFieldAndSetter;
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" in c{<unresolved>}.instanceDuplicateFieldAndSetter;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:98:5: Error: The getter 'instanceFieldAndDuplicateSetter' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceFieldAndDuplicateSetter'.
  c.instanceFieldAndDuplicateSetter;
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" in c{<unresolved>}.instanceFieldAndDuplicateSetter;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:99:5: Error: The setter 'instanceFieldAndDuplicateSetter' isn't defined for the class 'int'.
Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceFieldAndDuplicateSetter'.
  c.instanceFieldAndDuplicateSetter = 0;
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" in c.{<unresolved>}instanceFieldAndDuplicateSetter = 0;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:100:5: Error: The getter 'instanceDuplicateFieldAndDuplicateSetter' isn't defined for the class 'int'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'instanceDuplicateFieldAndDuplicateSetter'.
  c.instanceDuplicateFieldAndDuplicateSetter;
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" in c{<unresolved>}.instanceDuplicateFieldAndDuplicateSetter;
  invalid-expression "pkg/front_end/testcases/nnbd/duplicates_instance_extension.dart:101:5: Error: The setter 'instanceDuplicateFieldAndDuplicateSetter' isn't defined for the class 'int'.
Try correcting the name to the name of an existing setter, or defining a setter or field named 'instanceDuplicateFieldAndDuplicateSetter'.
  c.instanceDuplicateFieldAndDuplicateSetter = 0;
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" in c.{<unresolved>}instanceDuplicateFieldAndDuplicateSetter = 0;
}
static method main() → dynamic {
  core::int c = 0;
  self::result = null;
  self::Extension|set#instanceDuplicateFieldAndSetter(c, 0);
  self::expect(3, self::result);
  self::result = null;
  self::expect(1, self::Extension|instanceMethodAndSetter1(c));
  self::Extension|set#instanceMethodAndSetter1(c, 0);
  self::expect(2, self::result);
  self::result = null;
  self::expect(1, self::Extension|instanceMethodAndSetter2(c));
  self::Extension|set#instanceMethodAndSetter2(c, 0);
  self::expect(2, self::result);
}
static method expect(dynamic expected, dynamic actual) → dynamic {
  if(!(expected =={core::Object::==}{(core::Object) → core::bool} actual))
    throw "Expected ${expected}, actual ${actual}";
}
static method throws(() → dynamic f) → dynamic {
  try {
    f(){() → dynamic};
  }
  on core::Object catch(final core::Object e) {
    core::print(e);
    return;
  }
  throw "Expected exception.";
}