fix

cmd/structcheck/structcheck.go

@@ -78,6 +78,10 @@ func (v *visitor) typeAndFieldName(expr *ast.SelectorExpr) (types.Type, string,
 	if ptr, ok := recv.(*types.Pointer); ok {
 		recv = ptr.Elem()
 	}
+	for _, idx := range selection.Index()[:len(selection.Index())-1] {
+		recv = recv.Underlying().(*types.Struct).Field(idx).Type()
+	}
+
 	return recv, selection.Obj().Name(), true
 }
 
@@ -100,6 +104,21 @@ func (v *visitor) assignStmt(node *ast.AssignStmt) {
 	}
 }
 
+func (v *visitor) getRealStruct(expr *ast.SelectorExpr, fieldName string) *ast.SelectorExpr {
+	tv := v.pkg.Types[expr.X]
+	if !tv.IsType() {
+		return expr
+	}
+
+	switch st := tv.Type.Underlying().(type) {
+	case *types.Struct:
+		obj, _, _ := types.LookupFieldOrMethod(st, false, v.pkg.Pkg, fieldName)
+		// return
+		_ = obj
+	}
+	return nil
+}
+
 func (v *visitor) compositeLiteral(node *ast.CompositeLit) {
 	t := v.pkg.Info.Types[node.Type].Type
 	for _, expr := range node.Elts {