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Update stability.md

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Oliver Scherer 2019-08-21 17:31:08 +02:00 committed by Who? Me?!
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@ -37,3 +37,6 @@ ok to use such a feature gate are that behavior matches the runtime behavior of
(see also https://www.ralfj.de/blog/2018/07/19/const.html). This means that you may not create a (see also https://www.ralfj.de/blog/2018/07/19/const.html). This means that you may not create a
`const fn` that e.g. transmutes a memory address to an integer, because the addresses of things `const fn` that e.g. transmutes a memory address to an integer, because the addresses of things
are nondeterministic and often unknown at compile-time. are nondeterministic and often unknown at compile-time.
Always ping @oli-obk, @RalfJung, and @Centril if you are adding more `allow_internal_unstable`
attributes to any `const fn`