You can't cast a pointer to an integer; that's what uintptr_t is for.
dm...@angus> cat -n testptr.c
1 #include <inttypes.h>
2
3 void
4 f(void)
5 {
6 char *p;
7 unsigned int i;
8
9 i = p;
10 i = (uintptr_t)p;
11 }
12
dm...@angus> cc -c testptr.c
"testptr.c", line 9: warning: improper pointer/integer combination: op "="
Jin wrote:
> Hi,
>
> I add some test codes to ../uts/common/os/kcpc.c.
>
> int
> kcpc_bind_thread(kcpc_set_t *set, kthread_t *t, int *subcode)
> {
> ......
> /* new codes. */
> cmn_err(CE_NOTE, "ks_data = %" PRId64 ".\n", (uint64_t)set->ks_data);
> ......
> }
>
> The compiler says "warning: cast from pointer to integer of different size".
> The warning makes the compiling process returns with error.
> The based kernel source is snv_107 and running platform is also snv_107.
> The set->ks_data is one pointer, I want to print it's address out.
>
> struct _kcpc_set {
> ......
> uint64_t *ks_data; /* Data store for this set */
> };
>
> I don't think the case is one error. Can you give some suggestions?
> thanks
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