今天调试程序用到了指针数组,如下:

Uchar code *state[]={"OFF      ","ON       ","REMOTE   ","LOCAL    ","BACKUP   ","OFFLINE  ","ONLINE   ","NORMAL   ","EMERGENCY","STARTED  ","STOPED   ","LIMIT    ","NO-LIMIT ","MIN      ","MAX      ","NOREADY  ","READY    "};

可是伟福编译器提示:ERROR L107:ADDRESS SPACE OVERFLOW <LCD.M51>

改成如下(去掉几个数组):

Uchar code *state[]={"OFF      ","ON       ","REMOTE   ","LOCAL    ","BACKUP   ","OFFLINE  ","ONLINE   ","NORMAL   ","EMERGENCY","STARTED  ","STOPED   ","LIMIT    ","NO-LIMIT "};编译通过.  这个是哪个溢出呢,已经定义成了CODE区了,这肯定够用,是指针放在RAM里了?不太清楚.

无奈改成: Uchar code state[][9]={"OFF      ","ON       ","REMOTE   ","LOCAL    ","BACKUP   ","OFFLINE  ","ONLINE   ","NORMAL   ","EMERGENCY","STARTED  ","STOPED   ","LIMIT    ","NO-LIMIT ","MIN      ","MAX      ","NOREADY  ","READY    "};

LCD.h中的函数为:

void ePutstr2(Uchar x2,Uchar y2, Uchar code *ptr2)

{

        Uchar i,len=0;

        len = strlen(ptr2);

       for (i=0;i<len;i++)

         {

              DispOneChar2(x2++,y2,ptr2[i]);

              if ( x2 == 40 )

                {

                     x2 = 0; y2 ^= 1;

              }

       }

}

在主函数中调用:

             if(( disp[4]==4)

              {

               ePutstr2(30,1,&state[0][0]);  //在第2行第30个位置显示出OFF

              }

可显示的是CODE区的其他内容,跟踪执行发现指针ptr2指向的确实是”OFF”的首地址,问题就出现在len=strlen(ptr2)他判断字符串长度是以’\0’为标志的而前面定义的数组固定维数,没有空闲空间加入’\0’,所以导致把CODE区的其他内容全当成了一个数组,直到出现’\0’为止.

原来的判断字符串长度:while(isprint(ptr2[len]))   {len++;};    效果一样.

将数组改成:

Uchar code state[][10]={"OFF      ","ON       ","REMOTE   ","LOCAL    ","BACKUP   ","OFFLINE  ","ONLINE   ","NORMAL   ","EMERGENCY","STARTED  ","STOPED   ","LIMIT    ","NO-LIMIT ","MIN      ","MAX      ","NOREADY  ","READY    "};

问题解决,知道为什么了吧,哈哈,仔细看!多了一维.不再多说了吧……

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