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Rollup merge of #132255 - workingjubilee:layout-is-🏚️, r=compiler-errors

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Add `LayoutS::is_uninhabited` and use it

Use accessors for the things that accessors are good at: reducing everyone's need to be nosy and peek at the internals of every data structure.
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Jubilee 2024-10-28 10:18:50 -07:00 • committed by GitHub
commit 259ddf9b50
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21 changed files with 44 additions and 41 deletions
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4
compiler/rustc_transmute/src/layout/tree.rs
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@ -339,9 +339,7 @@ pub(crate) mod rustc {
// 2. enums that delegate their layout to a variant
// 3. enums with multiple variants
match layout.variants() {
Variants::Single { .. }
if layout.abi.is_uninhabited() && layout.size == Size::ZERO =>
{
Variants::Single { .. } if layout.is_uninhabited() && layout.size == Size::ZERO => {
// The layout representation of uninhabited, ZST enums is
// defined to be like that of the `!` type, as opposed of a
// typical enum. Consequently, they cannot be descended into