"unreachable code" warning

[crocklip]

Hi,

I am using PICC compiler for a PIC. I am getting a "unreachable code" warning when I try to return a value given a certain condition in a switch statement.I have included the code below. is this a serious warning? Thanks for the help.

int get_value_1(void)
{
	unsigned char temp = PORTD; 
	int valid = 0;
	
	while (PORTD != temp)
		{
	
	while (valid == 0)
	{
	valid = 1;
   	switch( PORTD ) 
   {
     case 0b01101110:  return 110;
     break;
     case 0b01011110:  return 116;
     break;
     case 0b00111110:  return 123;
     break;
     case 0b01101101:  return  130;
     break;
     case 0b01011101:  return  138;
     break;
     case 0b00111101:  return  147;
     break;
     case 0b01101011:  return  155;
     break;
     case 0b01011011:  return  165;
     break;
     case 0b00111011:  return  175;
     break;
     case 0b01100111:  return  185;
     break;
     case 0b01010111:  return  196;
     break;
     case 0b00110111:  return  207;
     break;
     default:
     {
     	valid = 0;
     }	
     
   			} //end of switch
		}//end of while
    } //end of while
} //end of function

 

[bobcat1]

Hi

Ho it is not - all it says that the software will never reach this line of code

All the best


Bobi