--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import kernel
+
+class G[E]
+ var e: E
+ fun sete(e: E) do self.e = e
+ redef fun output
+ do
+ 'G'.output
+ var e = self.e
+ if e isa G[Object] then
+ e.output
+ else if e isa Int then
+ 0.output
+ else
+ '\n'.output
+ end
+ end
+end
+
+var a = new G[Object](1)
+var x = new G[Int](10) #1alt1# var x = new G[G[Object]](a)
+var b: G[Object] = x
+#alt1# b.sete 100
+#alt2# b.e = 100
+#alt3# b.sete a
+#alt4# b.e = a
+x.output