redundant cast: nested casts with outer primitive (IDEA-119857)

java/java-tests/testData/inspection/redundantCast/generics/BoxingTopCast/expected.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<problems/>

java/java-tests/testData/inspection/redundantCast/generics/BoxingTopCast/src/BoxingTopCast.java

@@ -0,0 +1,20 @@
+class TestCasting
+{
+  public void testRedundantCast() throws Exception
+  {
+    Object o = getObject();
+    double d = 0.0;
+
+    if( o instanceof Integer )
+    {
+      d = (double) (Integer)o;
+    }
+
+    System.out.println( "d = " + d );
+  }
+
+  private Object getObject()
+  {
+    return new Integer(42);
+  }
+}

java/java-tests/testSrc/com/intellij/codeInspection/RedundantCast15Test.java

@@ -57,6 +57,11 @@ public class RedundantCast15Test extends InspectionTestCase {
     doTest();
   }
 
+  public void testBoxingTopCast() throws Exception {
+    IdeaTestUtil.setTestVersion(JavaSdkVersion.JDK_1_7, getModule(), getTestRootDisposable());
+    doTest();
+  }
+
   public void testIgnore() throws Exception {
     final RedundantCastInspection castInspection = new RedundantCastInspection();
     castInspection.IGNORE_ANNOTATED_METHODS = true;