---
title: 不支持__ builtin___snprintf_chk
description: "```"
url: https://www.hikunpeng.com/document/detail/zh/kunpengdevkithistory/bisheng/hist-bisheng/kunpengbisheng_06_0034_0.html
sourcePath: /source/zh/kunpengdevkithistory/bisheng/hist-bisheng/kunpengbisheng_06_0034_0.html
indexId: e646b1fcf2e3138686993768303b8cb0fb11d390a4bdb6db61f26e191b410cb282
---
# 不支持__ builtin___snprintf_chk

#### 错误信息

```
error: no member named '__builtin___snprintf_chk' in
```


#### 问题介绍

Clang暂不支持检查built-in函数格式化输出，会报出warning，当开启-Werror选项时升级为error。


#### 解决方案

添加编译选项-Wno-builtin-memcpy-chk-size规避该告警