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The original changelog item was added to stable after 2.109.0, so will appear in 2.109.1: https://dlang.org/changelog/2.109.1.html#dmd.unsafe-boolean-values However, fewer people may see point release changelogs, so its worth repeating those for 2.110 IMO. This also adds new items.
15 lines
776 B
Text
15 lines
776 B
Text
`bool` values other than 0 or 1 are not `@safe`
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The spec [was updated](https://dlang.org/spec/type.html#bool)
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(for 2.109) so that only 0 and 1 are
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[safe values](https://dlang.org/spec/function.html#safe-values)
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for `bool`. This means that reading a `bool` value whose underlying byte representation
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has other bits set is implementation-defined and should be avoided.
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Consequently the following are deprecated in `@safe` code:
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* `void` initialization of booleans (since 2.109)
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* Reading a `bool` field from a union (since 2.109)
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* Runtime casting a dynamic array to a `bool` dynamic array type
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* Runtime casting a `bool` dynamic array to a tail mutable dynamic array type
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* Casting a pointer to a `bool` pointer type
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* Casting a `bool` pointer to a tail mutable pointer type
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