pub unsafe auto trait Freeze { }freeze #121675) Expand description
Used to determine whether a type contains any UnsafeCell internally, but not through an indirection. This affects, for example, whether a static of that type is placed in read-only static memory or writable static memory. This can be used to declare that a constant with a generic type will not contain interior mutability, and subsequently allow placing the constant behind references.
This trait is a core part of the language, it is just expressed as a trait in libcore for convenience. Do not implement it for other types.
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