EvilZone

Programming and Scripting => C - C++ => : 0poitr December 31, 2013, 02:04:43 PM

: Back to C after a while. Got an lvalue problem :/
: 0poitr December 31, 2013, 02:04:43 PM

:

struct split *stringSplit (char *str, char *delim)
{               
    char **token_array;
    *token_array = NULL;
    allocPtrs (token_array);
       
    char *token = str, *saveptr;
    unsigned int bulk = 1, j;

    for (j=0; ; token=NULL) {
        token = strtok_r (token, delim, &saveptr);
        if (token) {
            if (j == bulk*CHAR_PTRS) {
                allocPtrs (token_array);
                bulk++;
            }
            *token_array+j = calloc (1, strlen (token)+1);
            if (! *token_array+j )
                error ("calloc");
            strcpy (*token_array+j, token);
            j++;
        }
        else break;
    }

    struct split *s_arr = calloc (sizeof(struct split), 1);
    s_arr->num = j;
    s_arr->token_array = token_array;

    return s_arr;
}

:

stringlib.c: In function ‘stringSplit’:
stringlib.c:50:28: error: lvalue required as left operand of assignment
             *token_array+j = calloc (1, strlen (token)+1);
                            ^

The function is meant to split the string by the delimiters and return an array of substring tokens.
What's going wrong? GCC's considering *token_array+j as a constant. WHY! I'm starting to loose mental sanity  >:(

: Re: Back to C after a while. Got an lvalue problem :/
: youpi December 31, 2013, 06:19:00 PM

Try to use () in your pointer+j

*(token_array+j) = calloc (1, strlen (token)+1);

Staff note: try to use the edit button next time.