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Date: Sun, 21 May 2017 22:15:43 +0200
From: Andreas Longwitz <longwitz@incore.de>
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To: Mark Johnston <markjdb@gmail.com>
CC: Domagoj Stolfa <domagoj.stolfa@gmail.com>, 
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Subject: Re: fbt:kernel:breadn_flags:entry): invalid address (0x0) in action #7
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Hello, thanks for answer

>>> I suspect the easiest way here is just to check that your credential in args[6] is non-null in a predicate.
>>
>> yes, you would likely have to enable the probe twice -- once with a non-null
>> argument and once with a null argument (if required).

My problem is: The probe fbt:kernel:breadn_flags:entry should fire in 
the case args[6] == 0, the case args[6] != 0 works but is not important 
to me.

> On FreeBSD head you can also use if-statements. :)
>
> fbt:kernel:breadn_flags:entry
> {
> 	if (args[6] != NULL) {
> 		...
> 	} else {
> 		...
> 	}
> }

Does this mean, my problem is solved in head even with a better 
if-syntax and no chance in V10 ?