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Encode TraitAlias as if they were Trait #56616

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merged 1 commit into from
Dec 8, 2018
Merged

Encode TraitAlias as if they were Trait #56616

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4 changes: 2 additions & 2 deletions src/librustc_metadata/encoder.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1141,7 +1141,8 @@ impl<'a, 'b: 'a, 'tcx: 'b> IsolatedEncoder<'a, 'b, 'tcx> {

EntryKind::Impl(self.lazy(&data))
}
hir::ItemKind::Trait(..) => {
hir::ItemKind::Trait(..) |
hir::ItemKind::TraitAlias(..) => {
let trait_def = tcx.trait_def(def_id);
let data = TraitData {
unsafety: trait_def.unsafety,
Expand All @@ -1154,7 +1155,6 @@ impl<'a, 'b: 'a, 'tcx: 'b> IsolatedEncoder<'a, 'b, 'tcx> {
EntryKind::Trait(self.lazy(&data))
}
hir::ItemKind::ExternCrate(_) |
hir::ItemKind::TraitAlias(..) |
hir::ItemKind::Use(..) => bug!("cannot encode info for item {:?}", item),
};

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7 changes: 7 additions & 0 deletions src/test/ui/run-pass/traits/trait-alias.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
// run-pass
#![feature(trait_alias)]

pub trait Foo {}
pub trait FooAlias = Foo;

fn main() {}