src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/tree/FunctionExpressionTreeImpl.java

*** 38,48 ****
      FunctionExpressionTreeImpl(final FunctionNode node,
              final List<? extends ExpressionTree> params,
              final BlockTree body) {
          super(node);
          funcNode = node;
!         assert !funcNode.isDeclared() : "function expression expected";
  
          final FunctionNode.Kind kind = node.getKind();
          if (node.isAnonymous() || kind == FunctionNode.Kind.GETTER || kind == FunctionNode.Kind.SETTER) {
              funcName = null;
          } else {
--- 38,48 ----
      FunctionExpressionTreeImpl(final FunctionNode node,
              final List<? extends ExpressionTree> params,
              final BlockTree body) {
          super(node);
          funcNode = node;
!         assert !funcNode.isDeclared() || funcNode.isAnonymous() : "function expression expected";
  
          final FunctionNode.Kind kind = node.getKind();
          if (node.isAnonymous() || kind == FunctionNode.Kind.GETTER || kind == FunctionNode.Kind.SETTER) {
              funcName = null;
          } else {