You don't seem to have set buf to point to anything...
MS
Jun Zhang wrote:
> Hello, everyone. I am new to tinyos and nesc. and I have the following
> data strucuture
>
> typedef nx_struct rt_link {
> nx_addr_t target;
> nx_addr_t nexthop;
> } rt_link_t;
>
> typedef struct rt_entry {
> double some_double;
> uint8_t some_int;
> } rt_entry_t;
>
> uint8_t flag = 0x01;
> uint8_t i=0;
> rt_link_t * buf;
> rt_entry_t table[10];
>
> if ( flag & 0x01)
> {
> buf[i].target = table[i].some_double;
> buf[i].nexthop = table[i].some_int;
> }
>
> and if I use
> if ( flag == 1)
> {
> buf[i].target = table[i].some_double;
> buf[i].nexthop = table[i].some_int;
> }
>
> I will get different value from buf[0], whats the difference?
>
> --
> Kind Regards
>
> Jun
>
>
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>
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