---
description: "Learn more about the C26476 USE_VARIANT C++ Core Guidelines Checker warning. Use a type-safe alternative to union, which is preferred in modern code."
title: Warning C26476
ms.date: 04/29/2022
f1_keywords: ["C26476", "USE_VARIANT"]
helpviewer_keywords: ["C26476"]
ms.assetid: bb2b3b26-9a84-4d81-8bae-ad9a5577c8a6
author: kylereedmsft
ms.author: kylereed
ms.custom: kr2b-contr-experiment
---
# Warning C26476

> Expression/symbol '*name*' uses a naked union '*union*' with multiple type pointers: Use variant instead (type.7)

## Remarks

`std::variant` provides a type-safe alternative to `union` and should be preferred in modern code.

Code analysis name: `USE_VARIANT`

## See also

[C++ Core Guideline C.181](https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#Ru-naked)