On Mon, 5 May 2008, Julian Elischer wrote:

> basically if you rely only on the standard posix interfaces and don't do
> anything exotic then you will "probably" be safe.
> the really safe way of course it to make a 6.0 chroot on your machine and
> compile your app there.

For "raw" UNIX applications, this rule of thumb works well, but not for
applications that depend on third-party libraries, languages, or daemons.
For example, Java binaries built against 6.0 using packages shipped with 6.0
can't run on 6.1 due to incompatible changes in third-party libraries it
depends on. While we try to be pretty careful with the base system, we have
no control over third party applications, and as far as I know, we perform no
testing (nor even have policies) for addressing that sort of incompatibility.
The safety of depending on those third-party libraries pretty much corresponds
to the carefulness of the thirdy-party library authors and their attention to
those same sorts of details.

Robert N M Watson
Computer Laboratory
University of Cambridge
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