dtrace discuss - Nov 2006 - incompatible with conversion: %lld prototype: long long argument: int64_t

I am working on dtracing a user process. The probe is defined as;
provider saxess { saxess probe P_ProcessRequest__send(int64_t, int64_t); }
The trace script as
saxess$1:::P_ProcessRequest-send {
  printf("%s:%s P_ProcessRequest-send = %lld %lld\n", probemod,
probefunc,arg0,arg1);
}
When I trace the process, i get the following error
dtrace: failed to compile script ./dtrace.d: line 4: printf( ) argument #4 is
incompatible with conversion #3 prototype:
        conversion: %lld
         prototype: long long
          argument: int64_t
It works with printf %d, however then arg1 gets incorrect.

/S
 
 
This message posted from opensolaris.org

Hi Sebastian,

There are two issues here:
1) you don''t need the ''l'' printf() modifiers with
DTrace ever
2) you should be using args[0] and args[1] rather than arg0 and arg1

Adam

On Fri, Nov 17, 2006 at 11:51:38PM -0800, Sebastian Tomac
wrote:
> I am working on dtracing a user process. The probe is defined as;
> provider saxess { saxess probe P_ProcessRequest__send(int64_t, int64_t); }
> The trace script as
> saxess$1:::P_ProcessRequest-send {
>   printf("%s:%s P_ProcessRequest-send = %lld %lld\n", probemod,
probefunc,arg0,arg1);
> }
> When I trace the process, i get the following error
> dtrace: failed to compile script ./dtrace.d: line 4: printf( ) argument #4
is incompatible with conversion #3 prototype:
>         conversion: %lld
>          prototype: long long
>           argument: int64_t
> It works with printf %d, however then arg1 gets incorrect.
> 
> /S
>  
>  
> This message posted from opensolaris.org
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org
-- 
Adam Leventhal, Solaris Kernel Development       http://blogs.sun.com/ahl

Thanks Adam, I changed the args and removed the %l.. 

/Sebastian
 
 
This message posted from opensolaris.org

But it''s OK to use arg0, arg1, ..., as long as you cast it, long long 
int, in this case:

printf("%s:%s P_ProcessRequest-send = %lld %lld\n", probemod,
probefunc,
     (long long int)arg0,(long long int)arg1);


Even though you don''t need to use the "l" modifier in
D''s printf, I can see doing it anyway, so that the casual observer can
immediately see that your types match up.

However, I agree, args[] is better.

Chip

Adam Leventhal wrote:
> Hi Sebastian,
>
> There are two issues here:
> 1) you don''t need the ''l'' printf() modifiers
with DTrace ever
> 2) you should be using args[0] and args[1] rather than arg0 and arg1
>
> Adam
>
> On Fri, Nov 17, 2006 at 11:51:38PM -0800, Sebastian Tomac wrote:
>   
>> I am working on dtracing a user process. The probe is defined as;
>> provider saxess { saxess probe P_ProcessRequest__send(int64_t,
int64_t); }
>> The trace script as
>> saxess$1:::P_ProcessRequest-send {
>>   printf("%s:%s P_ProcessRequest-send = %lld %lld\n",
probemod, probefunc,arg0,arg1);
>> }
>> When I trace the process, i get the following error
>> dtrace: failed to compile script ./dtrace.d: line 4: printf( ) argument
#4 is incompatible with conversion #3 prototype:
>>         conversion: %lld
>>          prototype: long long
>>           argument: int64_t
>> It works with printf %d, however then arg1 gets incorrect.
>>
>> /S
>>  
>>  
>> This message posted from opensolaris.org
>> _______________________________________________
>> dtrace-discuss mailing list
>> dtrace-discuss at opensolaris.org
>>     
>
>