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Be clearer about Some/None transmute.

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This commit is contained in:
Laurence Tratt 2020-08-12 15:53:58 +01:00
parent 83f47aa11b
commit f3d7196cae
1 changed files with 3 additions and 2 deletions
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5
library/core/src/option.rs
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@ -84,8 +84,9 @@
//! * `#[repr(transparent)]` struct around one of the types in this list.
//!
//! For the above cases, it is guaranteed that one can [`mem::transmute`]
//! from all valid values of `T` to `Option<T>` but only from non-`None`
//! Option<T>` to `T`.
//! from all valid values of `T` to `Option<T>` but only from
//! `Option::Some(T)` to `T` (i.e. transmuting `None` to `<T>` is undefined
//! behaviour).
//!
//! # Examples
//!