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mention stable-in-unstable issue

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Ralf Jung 2019-08-25 10:22:14 +02:00 committed by Who? Me?!
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src/stability.md
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@ -16,6 +16,13 @@ You can make specific sub-items stable by using the `#[stable]` attribute on the
The stability scheme works similarly to how `pub` works. You can have public functions of The stability scheme works similarly to how `pub` works. You can have public functions of
nonpublic modules and you can have stable functions in unstable modules or vice versa. nonpublic modules and you can have stable functions in unstable modules or vice versa.
Note, however, that due to a [rustc bug], stable items inside unstable modules
*are* available to stable code in that location! So, for example, stable code
can import `core::intrinsics::transmute` even though `intrinsics` is an unstable
module. Thus, this kind of nesting should be avoided when possible.
[rustc bug]: https://github.com/rust-lang/rust/issues/15702
# stable # stable
The `#[stable(feature = "foo", "since = "1.420.69")]` attribute explicitly marks an item as The `#[stable(feature = "foo", "since = "1.420.69")]` attribute explicitly marks an item as