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references and Box must be non-null #1715

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Jan 17, 2025
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references and Box must be non-null #1715

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2 changes: 1 addition & 1 deletion src/behavior-considered-undefined.md
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Expand Up @@ -214,7 +214,7 @@ r[undefined.validity.union]
Further details are [still being debated](https://github.com/rust-lang/unsafe-code-guidelines/issues/438).

r[undefined.validity.reference-box]
* A reference or [`Box<T>`] must be aligned, it cannot be [dangling], and it must point to a valid value
* A reference or [`Box<T>`] must be aligned and non-null, it cannot be [dangling], and it must point to a valid value
(in case of dynamically sized types, using the actual dynamic type of the
pointee as determined by the metadata).
Note that the last point (about pointing to a valid value) remains a subject of some debate.
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