MISRA-C 2004 规则解读(161S-180S)

161 S：Declaration in for statement. 避免在for循环中定义变量：

void STATIC_161(void)
{
    UINT32_t x, y=0;

    for(unsigned x(0);x <3;x++) /* not compliant */
    {
        y++;
    }
}

162 S：Method defined within class declaration. 除了成员函数，不要在类申明中定义函数。

163 S：Function starts with upper case character. 建议与175S一起取消。

164 S：Use of void * pointer. 避免使用void类型指针：

static void proc(void *ptr) { ; } /* not compliant */

void * a_proc ( void )            /* not compliant */
{
    return NULL;
}


void static_164 ( void )
{
   void * p = a_proc();          /* not compliant */
   proc(p);
}

165 S：Nested class declaration. 避免嵌套使用类：

class one {

public:
    long along;
    class nested
    {
    public:
        short s;
        nested(){;}
    };
    one()
    {
        nested anest;
    }
};

166 S：Class declared in function body.避免在函数体内定义类：

class one {

public:
    long l;
    one(){;}
    void aproc()
    {
        class inproc1
        {
            public:
                short s;
                inproc1(){;}
        };
    }

};

167 S：Class variable declared in class definition. 建议不要直接在结构体或者类定义后申明变量，使用typedef是更好的做法：

class one {

public:
    long a;
    one(){;}

} aone, *paone;

168 S：Call by value parameter not const. 值类型的函数参数传递建议使用const修饰:

static void aproc( SINT32_t iv_param) {;}        /* not compliant */
static void bproc(const SINT32_t ic_param) {;}

static SINT32_t static_168 (void)
{
  SINT32_t loc_var = 0;

  aproc(loc_var);
  bproc(loc_var);
}

169 S：Use of forward reference of class member. 注意在类中变量的定义要在使用之前：

class ok 
{ public:
    INT32_t x;
    ok(void) { x = 1; }
};

class notok 
{ public:
     notok() { d = 91; /* not compliant */ }
     INT32_t d;
};

170 S：Procedure call has no prototype and no defn. 被调用的函数缺少申明或者定义。

171 S：已取消

172 S：Variable declared multiply.变量重复定义：

UCHAR_t ddd;

UCHAR_t ddd;     /* not compliant */

UCHAR_t ddd = 0U;

static void static_172( void )
{
 ;
}

173 S：Class member starts with upper case character.类的函数应当以小写字符开头命名（构造函数除外）：

class one {public:
    void Upper2_out(); /* not compliant */
};

174 S：Class member starts with lower case character.类的成员函数应当以大写字符开头命名：

class one {
  public:
  INT32_t x;

  void notokproc1 ()  /* not compliant */
  {
  }
};

175 S：Function starts with lower case character. 建议与163S一起取消。

176 S：Non standard escape sequence in source. 避免出现转义字符：

void static_176 (void)
{
     char c = 'b';

     switch(c)
     {
     case '\m':  /* not compliant */
          break;

     default:
          break;
     }
}

177 S：Identifier not declared on new line. 建议每个变量都单起一行定义：

INT32_t okvar, notok2; /* not compliant */

void static_177(void)
{
  okvar = 0;
  notok2 = 2;
}

178 S：Declaration statement not on new line.同177S：

INT32_t * oka;
INT32_t b;  INT32_t *notoka; /* not compliant */

void proc( INT32_t * s, INT32_t *ok);  /* compliant */

struct tag0 { INT32_t * w; INT32_t *notokq;} astr; /* not compliant */

static void static_178(void)
{
 oka = 0;
}

179 S：Extern not at start of header file. extern类型变量应当声明在源文件开头处：

#include "c_standards.h"
#include "Static_179.h"

/********************************************************
 * Standard 179 S : Extern not at start of header file.
 ********************************************************/ 

static void static_179(void)
{
  ;
}

/*
 * Copyright (c) 2001 Liverpool Data Research Associates
 *
 *
 */
Static_179.h
INT32_t var;

extern INT32_t ex; /* not compliant */

180 S：No space between * or & and name in declaration. * 或者 &与变量名之间应当有空格。

MISRA-C 2004 规则解读(161S-180S)

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