Re: 3.3 release notes

[Joe Buck <jbuck at synopsys dot com>]

On Tue, May 13, 2003 at 10:02:50PM -0500, Loren James Rittle wrote:
> Joe, as usual, you have done a masterful job preparing these release
> notes.  Stuff in [] is proposed new/changed.  Comments about proposed
> new/changes are unmarked. - Loren

Thanks for the comments.
 
> > [...] For shared library versions, C++ binaries produced
> > by 3.2.x should work fine with the shared library from GCC 3.3, but we
> > can't make any assurances about the reverse direction.
> 
> FYI, the above statement MAY only be true if said shared library was
> produced with versioned symbol.  I'm not sure anyone has actually
> tested forward ABI compatibility with an unversioned shared library.
> Is "should work fine" enough guarded optimism here?  Or, do we need to
> more fully state the conditions under which we have forward ABI
> compatibility expectations?

It appears that there are no symbols that have distinct 3.2 and 3.3 versions,
so it doesn't seem that we are using versioning at all to create a distinct
3.3 interface.  If we were, of course it wouldn't work on a non-versioned OS.