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Simple function overloading problem

 
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tbob



Joined: 06 Dec 2006
Posts: 3
Location: Providence, RI

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Simple function overloading problem
PostPosted: Tue May 15, 2007 2:58 pm     Reply with quote
I'm trying to overload a very simple function I've created. I've tried using a header containing function prototypes, or not using them.

Code:


short lbatt_light(void);
short lbatt_light(short on_off);
short err_light (short on_off);

short lbatt_light(void)
{
   return ~LBATT_IND;
}

short lbatt_light(short on_off)
{
   if (TRIS_LBATT_IND == 0)
   {
      LBATT_IND = ~on_off;   // a logical '0' turns the light on
                           // logical '1' turns it off
      return 0;
   }
   else return 1;   // If not configured as an output, return failure
}

void main(void)
{
   short light_success;
   TRIS_LBATT_IND = 0;
   if( lbatt_light() == LIGHT_OFF )
      light_success = lbatt_light(LIGHT_ON);
   else
      light_success = lbatt_light(LIGHT_OFF);

   if(light_success)
      err_light(LIGHT_ON);

}



Very simple LED on/off type code. The warning I get is as follows:

Quote:

>>> Warning 203 "C:\1GMO1001\main.c" Line 102(1,1): Condition always TRUE
*** Error 165 "C:\1GMO1001\main.c" Line 104(16,17): No overload function matches
*** Error 51 "C:\1GMO1001\main.c" Line 106(1,5): A numeric expression must appear here


the lbatt_light() function clearly matches my "short lbatt_light(void)" prototype, so what is the problem here?

thanks for any help! Using compiler v4.011
kevcon



Joined: 21 Feb 2007
Posts: 142
Location: Michigan, USA

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PostPosted: Tue May 15, 2007 3:03 pm     Reply with quote
According the the version info page, this was fixed in 4.031

http://www.ccsinfo.com/devices.php?page=versioninfo


EDIT:
Although it looks like it doesn't work in 4.037.
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