cr_tknzr_parse_rgb (CRTknzr * a_this, CRRgb ** a_rgb)
{
        enum CRStatus status = CR_OK;
        CRInputPos init_pos;
        CRNum *num = NULL;
        guchar next_bytes[3] = { 0 }, cur_byte = 0;
        glong red = 0,
                green = 0,
                blue = 0,
                i = 0;
        gboolean is_percentage = FALSE;
        CRParsingLocation location = {0} ;

        g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR);

        RECORD_INITIAL_POS (a_this, &init_pos);

        PEEK_BYTE (a_this, 1, &next_bytes[0]);
        PEEK_BYTE (a_this, 2, &next_bytes[1]);
        PEEK_BYTE (a_this, 3, &next_bytes[2]);

        if (((next_bytes[0] == 'r') || (next_bytes[0] == 'R'))
            && ((next_bytes[1] == 'g') || (next_bytes[1] == 'G'))
            && ((next_bytes[2] == 'b') || (next_bytes[2] == 'B'))) {
                SKIP_CHARS (a_this, 1);
                cr_tknzr_get_parsing_location (a_this, &location) ;
                SKIP_CHARS (a_this, 2);
        } else {
                status = CR_PARSING_ERROR;
                goto error;
        }
        READ_NEXT_BYTE (a_this, &cur_byte);
        ENSURE_PARSING_COND (cur_byte == '(');

        cr_tknzr_try_to_skip_spaces (a_this);
        status = cr_tknzr_parse_num (a_this, &num);
        ENSURE_PARSING_COND ((status == CR_OK) && (num != NULL));

        red = num->val;
        cr_num_destroy (num);
        num = NULL;

        PEEK_BYTE (a_this, 1, &next_bytes[0]);
        if (next_bytes[0] == '%') {
                SKIP_CHARS (a_this, 1);
                is_percentage = TRUE;
        }
        cr_tknzr_try_to_skip_spaces (a_this);

        for (i = 0; i < 2; i++) {
                READ_NEXT_BYTE (a_this, &cur_byte);
                ENSURE_PARSING_COND (cur_byte == ',');

                cr_tknzr_try_to_skip_spaces (a_this);
                status = cr_tknzr_parse_num (a_this, &num);
                ENSURE_PARSING_COND ((status == CR_OK) && (num != NULL));

                PEEK_BYTE (a_this, 1, &next_bytes[0]);
                if (next_bytes[0] == '%') {
                        SKIP_CHARS (a_this, 1);
                        is_percentage = 1;
                }

                if (i == 0) {
                        green = num->val;
                } else if (i == 1) {
                        blue = num->val;
                }

                if (num) {
                        cr_num_destroy (num);
                        num = NULL;
                }
                cr_tknzr_try_to_skip_spaces (a_this);
        }

        READ_NEXT_BYTE (a_this, &cur_byte);
        if (*a_rgb == NULL) {
                *a_rgb = cr_rgb_new_with_vals (red, green, blue,
                                               is_percentage);

                if (*a_rgb == NULL) {
                        status = CR_ERROR;
                        goto error;
                }
                status = CR_OK;
        } else {
                (*a_rgb)->red = red;
                (*a_rgb)->green = green;
                (*a_rgb)->blue = blue;
                (*a_rgb)->is_percentage = is_percentage;

                status = CR_OK;
        }

        if (status == CR_OK) {
                if (a_rgb && *a_rgb) {
                        cr_parsing_location_copy 
                                (&(*a_rgb)->location, 
                                 &location) ;
                }
                return CR_OK;
        }

 error:
        if (num) {
                cr_num_destroy (num);
                num = NULL;
        }

        cr_tknzr_set_cur_pos (a_this, &init_pos);
        return CR_OK;
}
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.