anchor.diff:    // [cfe] unspecified
   
     c0.m1 += 0;
  -  // ^^^^^^
  -  // [analyzer] unspecified
  +  // ^^
  +  // [analyzer] STATIC_WARNING.ASSIGNMENT_TO_FINAL_NO_SETTER
  +  // [cfe] unspecified
  +
  +  c0.m1++;
  +  // ^^
  +  // [analyzer] STATIC_WARNING.ASSIGNMENT_TO_FINAL_NO_SETTER
     // [cfe] unspecified
   
     c0.m2 = 0;
     c0.m2;
     // ^^
  -  // [analyzer] unspecified
  +  // [analyzer] STATIC_TYPE_WARNING.UNDEFINED_GETTER
     // [cfe] unspecified
     c0.m2 += 0;
  -  // ^^^^^^^
  -  // [analyzer] unspecified
  -  // [cfe] unspecified
  +  // ^^
  +  // [analyzer] STATIC_TYPE_WARNING.UNDEFINED_GETTER
  +  // [cfe] unspecified
  +  c0.m2++;
  +  // ^^
  +  // [analyzer] STATIC_TYPE_WARNING.UNDEFINED_GETTER
  +  // [cfe] unspecified
  +
     E0(c0).m2;
  +
  +  c0[0];
  +  c0[0] = 0;
  +  // ^^^^^^
  +  // [analyzer] unspecified
  +  // [cfe] unspecified
  +  E0(c0)[0];
  +  // ^^^^^^
  +  // [analyzer] unspecified
  +  // [cfe] unspecified
  +  E0(c0)[0] = 0;
  +
  +  c0[0] += 0;
  +  // ^^^^^^
  +  // [analyzer] unspecified
  +  // [cfe] unspecified
  +  c0[0]++;
  +  // ^^^^^^
  +  // [analyzer] unspecified
  +  // [cfe] unspecified
  +
  +  E0(c0)[0] += 0;
  +  // ^^^^^^
  +  // [analyzer] unspecified
  +  // [cfe] unspecified
  +  E0(c0)[0]++;
  +  // ^^^^^^
  +  // [analyzer] unspecified
  +  // [cfe] unspecified
   }
   
   // Conflicting extensions.
  
positive.code: class C0 {
    int get m1 => 0;
    void set m2(int x) {}
  }
  
  extension E0 on C0 {
    void set m1(int x) {}
    int get m2 => 0;
  }
  
  void test0() {
    C0 c0 = C0();
    c0.m1;
    c0.m1 = 0;
    // ^^^^^^
    // [analyzer] unspecified
    // [cfe] unspecified
    E0(c0).m1 = 0;
    E0(c0).m1;
  
negative.code:   // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_EXTENSION_MEMBER_ACCESS
    // [cfe] unspecified
  
    c1b.m1 += 0;
    //  ^^
    // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_EXTENSION_MEMBER_ACCESS
    // [cfe] unspecified
  
    c1b.m1++;
    //  ^^
    // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_EXTENSION_MEMBER_ACCESS
    // [cfe] unspecified
  
    c1b.m2;
    //  ^^
    // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_EXTENSION_MEMBER_ACCESS
    // [cfe] unspecified
  
  
    c1b[0];
    //  ^^
    // [analyzer] unspecified
    // [cfe] unspecified
  
    c1b[0] = 0;
    //  ^^
    // [analyzer] unspecified
    // [cfe] unspecified
  
    c1b[0] += 0;
    //  ^^
    // [analyzer] unspecified
    // [cfe] unspecified
  
    c1b[0]++;
    //  ^^
    // [analyzer] unspecified
    // [cfe] unspecified
  }
  
  