Fixes #1106. Use runtime check 'is int' VS 'is String' to check that runtime type is 'int', not 'dynamic'
diff --git a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t01.dart b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t01.dart
index ba4ce31..ffcf0ba 100644
--- a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t01.dart
+++ b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t01.dart
@@ -24,17 +24,17 @@
 class C {
   var x;
   C() {
-    x = instanceMethod<int>;
+    var x = instanceMethod<int>;
+    Expect.equals(42, x(42));
+    dynamic d1 = -42;
+    Expect.isTrue(x(d1) is int);
+    Expect.isFalse(x(d1) is String); // to check that returned type is not dynamic
+    dynamic d2 = 3.14;
+    Expect.throws(() {x(d2);});
   }
   T instanceMethod<T>(T t) => t;
 }
 
 main() {
-  C c = new C();
-  Expect.equals(42, c.x(42));
-  dynamic d1 = -42;
-  Expect.isTrue(c.x(d1) is int);
-  Expect.isFalse(c.x(d1) is double); // to check that returned type is not dynamic
-  dynamic d2 = 3.14;
-  Expect.throws(() {c.x(d2);});
+  new C();
 }
diff --git a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t03.dart b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t03.dart
index 65dd46f..d9c085e 100644
--- a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t03.dart
+++ b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t03.dart
@@ -22,19 +22,18 @@
 import "../../Utils/expect.dart";
 
 class C {
-  var x;
   C() {
-    x = this.instanceMethod<int>;
+    var x = this.instanceMethod<int>;
+    Expect.equals(42, x(42));
+    dynamic d1 = -42;
+    Expect.isTrue(x(d1) is int);
+    Expect.isFalse(x(d1) is String); // to check that returned type is not dynamic
+    dynamic d2 = 3.14;
+    Expect.throws(() {x(d2);});
   }
   T instanceMethod<T>(T t) => t;
 }
 
 main() {
-  C c = new C();
-  Expect.equals(42, c.x(42));
-  dynamic d1 = -42;
-  Expect.isTrue(c.x(d1) is int);
-  Expect.isFalse(c.x(d1) is double); // to check that returned type is not dynamic
-  dynamic d2 = 3.14;
-  Expect.throws(() {c.x(d2);});
+  new C();
 }
diff --git a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t05.dart b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t05.dart
index e6cdbdd..1aeb96f 100644
--- a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t05.dart
+++ b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t05.dart
@@ -26,18 +26,17 @@
 }
 
 class C extends A {
-  var x;
   C() {
-    x = instanceMethod<int>;
+    var x = instanceMethod<int>;
+    Expect.equals(42, x(42));
+    dynamic d1 = -42;
+    Expect.isTrue(x(d1) is int);
+    Expect.isFalse(x(d1) is String); // to check that returned type is not dynamic
+    dynamic d2 = 3.14;
+    Expect.throws(() {x(d2);});
   }
 }
 
 main() {
-  C c = new C();
-  Expect.equals(42, c.x(42));
-  dynamic d1 = -42;
-  Expect.isTrue(c.x(d1) is int);
-  Expect.isFalse(c.x(d1) is double); // to check that returned type is not dynamic
-  dynamic d2 = 3.14;
-  Expect.throws(() {c.x(d2);});
+  new C();
 }
diff --git a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t07.dart b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t07.dart
index eb3fec6..d902408 100644
--- a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t07.dart
+++ b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t07.dart
@@ -27,18 +27,17 @@
 }
 
 class C extends A {
-  var x;
   C() {
-    x = this.instanceMethod<int>;
+    var x = this.instanceMethod<int>;
+    Expect.equals(42, x(42));
+    dynamic d1 = -42;
+    Expect.isTrue(x(d1) is int);
+    Expect.isFalse(x(d1) is String); // to check that returned type is not dynamic
+    dynamic d2 = 3.14;
+    Expect.throws(() {x(d2);});
   }
 }
 
 main() {
-  C c = new C();
-  Expect.equals(42, c.x(42));
-  dynamic d1 = -42;
-  Expect.isTrue(c.x(d1) is int);
-  Expect.isFalse(c.x(d1) is double); // to check that returned type is not dynamic
-  dynamic d2 = 3.14;
-  Expect.throws(() {c.x(d2);});
+  new C();
 }
diff --git a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t09.dart b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t09.dart
index 1bb3a1c..e929b4e 100644
--- a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t09.dart
+++ b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t09.dart
@@ -27,18 +27,17 @@
 }
 
 class C extends A {
-  var x;
   C() {
-    x = super.instanceMethod<int>;
+    var x = super.instanceMethod<int>;
+    Expect.equals(42, x(42));
+    dynamic d1 = -42;
+    Expect.isTrue(x(d1) is int);
+    Expect.isFalse(x(d1) is String); // to check that returned type is not dynamic
+    dynamic d2 = 3.14;
+    Expect.throws(() {x(d2);});
   }
 }
 
 main() {
-  C c = new C();
-  Expect.equals(42, c.x(42));
-  dynamic d1 = -42;
-  Expect.isTrue(c.x(d1) is int);
-  Expect.isFalse(c.x(d1) is double); // to check that returned type is not dynamic
-  dynamic d2 = 3.14;
-  Expect.throws(() {c.x(d2);});
+  new C();
 }
diff --git a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t12.dart b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t12.dart
index 7d4f6dc..53dbc6aa 100644
--- a/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t12.dart
+++ b/LanguageFeatures/Constructor-tear-offs/function_tearoffs_A02_t12.dart
@@ -30,7 +30,7 @@
   Expect.equals(42, x(42));
   dynamic d1 = -42;
   Expect.isTrue(x(d1) is int);
-  Expect.isFalse(x(d1) is double); // to check that returned type is not dynamic
+  Expect.isFalse(x(d1) is String); // to check that returned type is not dynamic
   dynamic d2 = 3.14;
   Expect.throws(() {x(d2);});
 }