Note that binding variables may be casting nodes

java/ql/lib/semmle/code/java/dataflow/internal/DataFlowPrivate.qll

@@ -375,7 +375,18 @@ predicate compatibleTypes(DataFlowType t1, DataFlowType t2) { compatibleTypes0(t
 
 /** A node that performs a type cast. */
 class CastNode extends ExprNode {
-  CastNode() { this.getExpr() instanceof CastingExpr }
+  CastNode() {
+    this.getExpr() instanceof CastingExpr
+    or
+    exists(SsaExplicitUpdate upd |
+      upd.getDefiningExpr().(VariableAssign).getSource() =
+        [
+          any(SwitchStmt ss).getExpr(), any(SwitchExpr se).getExpr(),
+          any(InstanceOfExpr ioe).getExpr()
+        ] and
+      this.asExpr() = upd.getAFirstUse()
+    )
+  }
 }
 
 private newtype TDataFlowCallable =