IG: consider anonymous classes not matching (IDEA-185470)

plugins/InspectionGadgets/InspectionGadgetsAnalysis/src/com/siyeh/ig/psiutils/EquivalenceChecker.java

@@ -804,6 +804,10 @@ public class EquivalenceChecker {
     final PsiExpression[] args1 = argumentList1 == null ? null : argumentList1.getExpressions();
     final PsiExpressionList argumentList2 = newExpression2.getArgumentList();
     final PsiExpression[] args2 = argumentList2 == null ? null : argumentList2.getExpressions();
+    if (newExpression1.getAnonymousClass() != null || newExpression2.getAnonymousClass() != null) {
+      // simply consider any anonymous classes not matching
+      return EXACT_MISMATCH;
+    }
     return expressionsAreEquivalent(args1, args2);
   }
 

plugins/InspectionGadgets/test/com/siyeh/igtest/inheritance/redundant_method_override/RedundantMethodOverride.java

@@ -198,4 +198,20 @@ class Declaration {
       };
     }
   }
+}
+//////////////
+class DifferentAnonymous {
+
+  Object x() {
+    return new Object() {
+      int one;
+    };
+  }
+}
+class DifferentAnonymous2 extends DifferentAnonymous {
+
+  @Override
+  Object x() {
+    return new Object() {};
+  }
 }