Lpc2000

Hello,

Using gnuarm with the following code:

int is_any(unsigned char *str, char ch)
{
   unsigned char myCh;
   while((myCh=*str++))
   {
     if (ch == myCh)
       return ch;
   }
   return 0;
}

const unsigned char string1[]={"abcdefgh"};

int test()
{
   char ch = 'd';
   if(is_any(string1, ch)==0)
   {
     printf("Not there!");
     return 1;
   }
   return 0;
}

returns this as a warning:

test.c: In function `test':
test.c:32: warning: passing arg 1 of `is_any' discards qualifiers from 
pointer target type

this is because you're passing a "const uchar *" as a "uchar *" 
param.  Changing either the function to is_any(const unsigned char 
*,char)  or removing const from the string declaration removes this 
warning, but it's only a warning, it won't effect the execution.

-- Sean

At 16:51 2/10/2006, you wrote:
>I finally got my avr asm app converted to gnuarm c
>and it compiles.
>
>However, it does not like:
>int is_any(unsigned char *, char);
>
>const unsigned char string1[]={"abcdefgh"};
>
>...
>       ch = 'd';
>       if(is_any(string1, ch)==0)....;
>
>I had other const strings, and it gave me warnings as well.
>
>Do we have to use const to ensure that the strings as constant
>and put in flash rather than ram?
>
>Thanks,
>
>Glen