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Document sizeof behavior for enum types #54567

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Document sizeof behavior for enum types #54567

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2 changes: 2 additions & 0 deletions docs/csharp/language-reference/operators/sizeof.md
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Expand Up @@ -34,6 +34,8 @@ The expressions presented in the following table are evaluated at compile time t

The size of the types in the preceding table is a compile-time constant.

For an enum type, the result of the `sizeof` operator is the size of the enum's underlying integral type. The result is computed at compile time.

In [unsafe](../keywords/unsafe.md) code, you can use `sizeof` on any non-`void` type, including types constructed from type parameters.

> [!NOTE]
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