RFH: GPLv3

Richard Kenner kenner@vlsi1.ultra.nyu.edu
Mon Jul 16 18:13:00 GMT 2007


> On Jul 16, 2007, kenner@vlsi1.ultra.nyu.edu (Richard Kenner) wrote:
> 
> > the issue here is not what the license actually *is*, but how one is
> > to *know* what it is.
> 
> I guess if you have any doubts as to the license the distributor wants
> you to believe to be applicable, you can (i) ask the copyright holder,

You can't ask the copyright holder because you need the representation of
the distributor as to who the copyright holder actually is!  This is a key
point.

If you give me a file that purports to be a modified version of GCC, how do
I know who else, if anybody, might have a copyright claim on that version?

That's why I need a license agreement with you: to know exactly what the
terms of use of the software are.  If you warrant to me "that software is
copyrighted by the FSF under the terms of GPLv2" and I rely on that claim,
it turns out to be false, and I get harmed (e.g., sued for copyright or
patent infringement), I can come after you for damages.



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