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Don't allow transmuting ZSTs in dispatch_from_dyn impl

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Michael Goulet 2025-01-08 00:28:47 +00:00
parent ad211ced81
commit 3c3186148e
5 changed files with 66 additions and 7 deletions
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compiler/rustc_hir_analysis/messages.ftl
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@ -135,7 +135,7 @@ hir_analysis_dispatch_from_dyn_multi = implementing the `DispatchFromDyn` trait
hir_analysis_dispatch_from_dyn_repr = structs implementing `DispatchFromDyn` may not have `#[repr(packed)]` or `#[repr(C)]`
hir_analysis_dispatch_from_dyn_zst = the trait `DispatchFromDyn` may only be implemented for structs containing the field being coerced, ZST fields with 1 byte alignment, and nothing else
hir_analysis_dispatch_from_dyn_zst = the trait `DispatchFromDyn` may only be implemented for structs containing the field being coerced, ZST fields with 1 byte alignment that don't mention type/const generics, and nothing else
.note = extra field `{$name}` of type `{$ty}` is not allowed
hir_analysis_drop_impl_negative = negative `Drop` impls are not supported