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Auto merge of #124482 - spastorino:unsafe-extern-blocks, r=oli-obk

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Unsafe extern blocks

This implements RFC 3484.

Tracking issue #123743 and RFC https://github.com/rust-lang/rfcs/pull/3484

This is better reviewed commit by commit.
This commit is contained in:
bors 2024-06-06 08:14:58 +00:00
commit 2d28b6384e
93 changed files with 714 additions and 152 deletions
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2
compiler/rustc_feature/src/unstable.rs
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@ -620,6 +620,8 @@ declare_features! (
(unstable, type_changing_struct_update, "1.58.0", Some(86555)),
/// Allows unnamed fields of struct and union type
(incomplete, unnamed_fields, "1.74.0", Some(49804)),
/// Allows unsafe on extern declarations and safety qualifiers over internal items.
(unstable, unsafe_extern_blocks, "CURRENT_RUSTC_VERSION", Some(123743)),
/// Allows unsized fn parameters.
(unstable, unsized_fn_params, "1.49.0", Some(48055)),
/// Allows unsized rvalues at arguments and parameters.