Fix semantic error: empty struct

On Tue, 2008-07-08 at 14:57 -0400, Frank Ch. Eigler wrote:
> Hi -
>
> > you need a global cache for resolution ... it's not tied to any local
> > class instance.  For class dwflpp it probably doesn't matter, since that
> > class is effectively static (by its survival for a session) but
> > logically because the DW_AT_declaration resolution is global, so should
> > the cache that does it.
>
> .. except it's not actually global, in that the kernel is not the only
> code that will go through the dwarf family of probe processors -
> user-space dwarf files are coming its way soon.  Plus, if in the
> future the systemtap frontend attempts distributed probing of multiple
> target systems concurrently, "global" will be even more local.

In that context its as global as a lot of the other static data in that
structure (like this_session) which would also have to be fixed to do a
multiple target system.

Regardless, it can become per instance: it will only screw up if dwflpp
moves to being short lived.

James

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