Caitlin Bestler wrote:
Given both of those factors, I believe it makes more sense
to preserve the full DAT_RETURN value (including detail error
data) as an out parameter. kdat.h could then simply turn it
into the functional return for compatability clients and there
would be no loss of information. Either that or we could work
out on a case by case basis how kdat.h would be able to restore
the original error value. This may be possible with data in
the struct, since multiple outstanding errors on a single
object would not seem to be likely (or perhaps more appropriately
worthy of providing detailed error diagnostics for, since it
probably represents a totally hosed application).
If we decide to add in a compatibility layer with a dat_return
*parameter, or some other mechanism, this should be a compile time option.
-tduffy
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