Function new_col_info

lua/sp.c:1053–1069

** Call this with parent emit mutex held ** Will allocate space for 'ntypes' columns */

** Will allocate space for 'ntypes' columns
*/
static void new_col_info(SP sp, int ntypes)
{
    SP parent = sp->parent;
    int prev = parent->ntypes;
    if (prev >= ntypes) {
        return;
    }
    parent->clntname =
        realloc(parent->clntname, ntypes * sizeof(parent->clntname[0]));
    parent->clnttype =
        realloc(parent->clnttype, ntypes * sizeof(parent->clnttype[0]));
    for (int i = prev; i < ntypes; ++i) {
        parent->clntname[i] = NULL;
        parent->clnttype[i] = -1;
    }
    parent->ntypes = ntypes;
}

/* TODO: delete it once typestr_to_type starts giving decimals. */
static int sqlite_str_to_type(const char *ctype)