CERT C:Rec.PRE00-C

Prefer inline or static functions to function-like macros

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描述

规则定义

Prefer inline or static functions to function-like macros.¹

Polyspace 实现

规则检查项检查使用类似函数的宏而不是函数。

示例

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使用类似函数的宏而不是函数

问题

当您使用类似函数的宏而不是函数（两者可以互换使用）时，会出现此问题。

Polyspace^® 会考虑所有类似函数的宏的定义。

风险

在大多数情况下，应使用函数而不是宏。函数会执行参量类型检查并评估其参量一次，从而避免可能产生多重副作用的问题。

检查信息

组：Rec.01.预处理器 (PRE)

版本历史记录

在 R2019a 中推出

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R2024a: 不再针对 `(void)(x)` 报告违规情形

从 R2024a 开始，Polyspace 不再报告使用 (void)(x) 定义未使用函数参数的宏违反此规则的情形。

#define UNUSED_PARAMETER(x) (void) (x)        //Compliant

另请参阅

检查 SEI CERT-C (-cert-c)

主题

检查并审查编码标准违规

外部网站

PRE00-C

¹ This software has been created by MathWorks incorporating portions of: the “SEI CERT-C Website,” © 2017 Carnegie Mellon University, the SEI CERT-C++ Web site © 2017 Carnegie Mellon University, ”SEI CERT C Coding Standard – Rules for Developing safe, Reliable and Secure systems – 2016 Edition,” © 2016 Carnegie Mellon University, and “SEI CERT C++ Coding Standard – Rules for Developing safe, Reliable and Secure systems in C++ – 2016 Edition” © 2016 Carnegie Mellon University, with special permission from its Software Engineering Institute.

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This software and associated documentation has not been reviewed nor is it endorsed by Carnegie Mellon University or its Software Engineering Institute.