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Add ptr::Pointee trait (for all types) and ptr::metadata function

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RFC: https://github.com/rust-lang/rfcs/pull/2580
This commit is contained in:
Simon Sapin 2020-10-19 15:38:11 +02:00
parent 9503ea19ed
commit 696b239f72
17 changed files with 349 additions and 10 deletions
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4
compiler/rustc_hir/src/lang_items.rs
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@ -201,6 +201,10 @@ language_item_table! {
// The associated item of `trait DiscriminantKind`.
Discriminant, sym::discriminant_type, discriminant_type, Target::AssocTy;
PointeeTrait, sym::pointee_trait, pointee_trait, Target::Trait;
Metadata, sym::metadata_type, metadata_type, Target::AssocTy;
DynMetadata, sym::dyn_metadata, dyn_metadata, Target::Struct;
Freeze, sym::freeze, freeze_trait, Target::Trait;
Drop, sym::drop, drop_trait, Target::Trait;