Аргумент в функции - was set but never used Опции

[Jenya7]

Есть функция

Код

const char* PARSER_ParseBlock(const char* text, char* buf, uint32_t buf_size, uint32_t *text_type, char* block_start_addr)
{
    char type = 0;
    char* b = buf;
    uint32_t s = buf_size;
    const char* p = text;
    for(;*p != 0; p++)
    {
    if(p[0] == 'S' && p[1] == 'O' && (p[2] == 'I' || p[2] == 'A')) // check start of block SOI-start of instraction, SOA-start of action
        {
        if (type != 0) // start of next block without end of previous, start over
            {
        b = buf;
        s = buf_size;
        }
            
            block_start_addr = (char*)&p[0];
        type = p[2];
            *text_type =  type;
        p += 2;
    }
        else if(type)
        {
            // write in a buffer
        if (p[0] == 'E' && p[1] == 'O' && (p[2] == 'I' || p[2] == 'A')) // check end of block
            {
        if(type != p[2]) //end of block not this type
                {
            b = buf;
            s = buf_size;
            type = 0;
        }
                else
                {
            *b = 0;
            return p + 3;
        }
        }
            else if(s > 1)
            {
                // there is a place in buffer
        *b = *p;
         s--;
         b++;
        }
            else
            {
              *buf = 0;
            }
    }
    }
    *b = 0;
      
    return NULL;
}

При компиляции получаю Warning[Pe550]: parameter "block_start_addr" was set but never used
Что то не могу понять где подвох.