c - MISRA 错误 : field type should be int, 无符号整数或有符号整数

Question

我在程序中使用了以下代码，在运行 PC-Lint 时抛出以下错误:此行有多个标记 - (lint:46) 字段类型应为 int、unsigned int 或 signed int [MISRA 2004 规则 6.4，必需] - (lint:960) 违反了 MISRA 2004 Required Rule 6.4，位字段必须显式签名为 int 或 无符号整数

typedef struct{
  boolean ch8 :1;
  boolean Ch7 :1;
  boolean Ch6 :1;
  boolean Ch5 :1;
  boolean Ch4 :1;
  boolean Ch3 :1;
  boolean Ch2 :1;
  boolean Ch1 :1;
} Channel;

谁能告诉我如何解决这个问题？

Answer 1

你必须这样做:

typedef struct{
  unsigned int ch8 :1;
  unsigned int Ch7 :1;
  unsigned int Ch6 :1;
  unsigned int Ch5 :1;
  unsigned int Ch4 :1;
  unsigned int Ch3 :1;
  unsigned int Ch2 :1;
  unsigned int Ch1 :1;
} Channel;

位域接受的唯一类型是整数类型。