Recent removal of the 'aux' field in tree_common

[Neil Booth]

Diego Novillo wrote:-

> Sounds sensible.  What about the idea I mentioned in my original
> message?  We need to have analysis/optimization information in some
> trees (particularly _DECL and _STMT trees).  Would adding fields to only
> those trees be OK?

This may be a side issue, but I'd really like to see some progress
towards not everthing being a "tree", but use stronger typing instead.
This would avoid the issue you bring up, and help in other areas too.

Neil.