MISRA C:2023 Rule 20.8
The controlling expression of a #if or #elif preprocessing directive shall evaluate to 0 or 1
自 R2024a 起
描述
规则定义
The controlling expression of a #if or #elif preprocessing directive shall evaluate to 0 or 1 1 .
理由
强定型要求条件包含预处理指令（#if 或 #elif）的控制表达式的求值结果必须为布尔值。
故障排除
如果您预期会出现违规，但未看到该违规，请参阅诊断为何编码规范违规未按预期显示。
检查信息
| 组：预处理指令 |
| 类别：必需 |
| AGC 类别：建议 |
版本历史记录
在 R2024a 中推出
1 All MISRA coding rules and directives are © Copyright The MISRA Consortium Limited 2021.
The MISRA coding standards referenced in the Polyspace® Bug Finder™ documentation are from the following MISRA standards:
MISRA C:2004
MISRA C:2012
MISRA C:2023
MISRA C++:2008
MISRA C++:2023
MISRA and MISRA C are registered trademarks of The MISRA Consortium Limited 2021.
