Pointer chain paranoia

[Stone, Joshua I]

On Tuesday, November 14, 2006 1:12 PM, Mike Mason wrote:
> Are pointer chain references in the regular stap language (not
> embedded C) always safe?  In other words, if I use something of the
> form $ptr1->ptr2->ptr3->var, does stap automatically convert that to
> the needed deref() macros? I looked at the resulting module code and
> I think it does, but want to be sure.    

Yes, dereferencing in the script language is guaranteed safe.  If you
find a case where it's not protecting the access, that's a bug.

We really should hold tapsets to the same standard -- unprotected
dereferencing should be treated as a bug.  (Some will be dependent on
bug #3079 though...)

Josh