warning: duplicate 'const' declaration specifier

AlbertHall

Joined Jun 4, 2014
11,217
This is code for the XC8 compiler (C99) and it gives me the warning in the title. Can I ignore this warning or is one of the 'const' redundant?
Code:
const uint8_t const LCD_ROW_ADDRESS[] =                    // Row/Column information for lcd_gotoxy()
{
#if LCD_MODE_1x8
0x00
#endif
#if LCD_MODE_1x16_A
0x00
#endif
#if LCD_MODE_1x16_B
0x00,
0x40
#endif
#if LCD_MODE_1x40
0x00,
#endif
#if LCD_MODE_2x8
0x00,
0x40
#endif
#if LCD_MODE_2x12
0x00,
0x40
#endif
#if LCD_MODE_2x16
0x00,
0x40
#endif
#if LCD_MODE_2x20
0x00,
0x40
#endif
#if LCD_MODE_2x24
0x00,
0x40
#endif
#if LCD_MODE_2x40
0x00,
0x40
#endif
#if LCD_MODE_4x16
0x00,
0x40,
0x10,
0x50
#endif
#if LCD_MODE_4x20
0x00,
0x40,
0x14,
0x54
#endif
#if LCD_MODE_4x24
0x00,
0x40,
0x80,
0xc0
#endif
};

MrChips

Joined Oct 2, 2009
23,221
Why do you have two const in line 1?

AlbertHall

Joined Jun 4, 2014
11,217
I don't. This is some code from www that I am trying to get working.

Papabravo

Joined Feb 24, 2006
15,730
The construct
is a shorthand for &LCD_ROW_ADDRESS(0) and as such is already a constant. The const out in front refers to the "constants" in the array. So pointers to fixed addresses are already constants. I don't think it will hurt anything, but I would get rid of it regardless. Code is much easier to debug if you don't have a pile of warnings. Besides you don't want to pass this code on if the compiler is barking at you.

MrChips

Joined Oct 2, 2009
23,221
I don't. This is some code from www that I am trying to get working.
That is the drawback with trying to use code off the www that someone else wrote.
I prefer to get an idea of what the code is supposed to do and then rewrite it in my own code.

AlbertHall

Joined Jun 4, 2014
11,217
That is the drawback with trying to use code off the www that someone else wrote.
I prefer to get an idea of what the code is supposed to do and then rewrite it in my own code.
Yes, but whenever I can I choose laziness

Papabravo

Joined Feb 24, 2006
15,730
Yes, but whenever I can I choose laziness
Isn't there a biblical quote about the wages of laziness? Wink back atcha