#KT-2811 Fixed VerifyError on smart-cast 'this'

compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java

@@ -1911,9 +1911,9 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
         }
         else if (descriptor instanceof AutoCastReceiver) {
             AutoCastReceiver autoCastReceiver = (AutoCastReceiver) descriptor;
-            Type intermediateType = asmType(autoCastReceiver.getType());
+            Type originalType = asmType(autoCastReceiver.getOriginal().getType());
-            generateFromResolvedCall(autoCastReceiver.getOriginal(), intermediateType);
+            generateFromResolvedCall(autoCastReceiver.getOriginal(), originalType);
-            StackValue.onStack(intermediateType).put(type, v);
+            StackValue.onStack(originalType).put(type, v);
         }
         else {
             throw new UnsupportedOperationException("Unsupported receiver type: " + descriptor);

compiler/testData/codegen/typeInfo/kt2811.kt

@@ -0,0 +1,25 @@
+open class Test1 {
+    fun test1(): String {
+        if (this is Test2) {
+            return this.foo()
+        }
+        return "fail"
+    }
+}
+
+class Test2(): Test1() {
+    fun foo(): String {
+        return "OK"
+    }
+}
+
+fun Test1.test2(): String {
+    if (this is Test2) return this.foo() else return "fail"
+}
+
+fun box(): String {
+    if ("OK" == Test2().test1() && "OK" == Test2().test2()) {
+        return "OK"
+    }
+    return "fail"
+}

compiler/tests/org/jetbrains/jet/codegen/TypeInfoTest.java

@@ -157,6 +157,10 @@ public class TypeInfoTest extends CodegenTestCase {
 //        System.out.println(generateToText());
     }
 
+    public void testKt2811() throws Exception {
+        blackBoxFile("typeInfo/kt2811.kt");
+    }
+
     public void testInheritance() throws Exception {
         blackBoxFile("typeInfo/inheritance.jet");
 //        System.out.println(generateToText());