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Initial (incomplete) implementation of transmutability trait.

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This initial implementation handles transmutations between types with specified layouts, except when references are involved.

Co-authored-by: Igor null <m1el.2027@gmail.com>
This commit is contained in:
Jack Wrenn
2021-07-03 12:18:13 -04:00
parent 2a220937c2
commit bc4a1dea41
91 changed files with 5691 additions and 2 deletions
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3
compiler/rustc_hir/src/lang_items.rs
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@@ -191,6 +191,9 @@ language_item_table! {
CoerceUnsized, sym::coerce_unsized, coerce_unsized_trait, Target::Trait, GenericRequirement::Minimum(1);
DispatchFromDyn, sym::dispatch_from_dyn, dispatch_from_dyn_trait, Target::Trait, GenericRequirement::Minimum(1);
// language items relating to transmutability
TransmuteTrait, sym::transmute_trait, transmute_trait, Target::Trait, GenericRequirement::Exact(6);
Add(Op), sym::add, add_trait, Target::Trait, GenericRequirement::Exact(1);
Sub(Op), sym::sub, sub_trait, Target::Trait, GenericRequirement::Exact(1);
Mul(Op), sym::mul, mul_trait, Target::Trait, GenericRequirement::Exact(1);