Add Tuple marker trait

2022-07-30 01:53:29 +00:00
parent d394408fb3
commit 6b2eab2310
3 changed files with 12 additions and 0 deletions
--- a/compiler/rustc_hir/src/lang_items.rs
+++ b/compiler/rustc_hir/src/lang_items.rs
@@ -290,6 +290,8 @@ language_item_table! {

    Try,                     sym::Try,                 try_trait,                  Target::Trait,          GenericRequirement::None;

+    Tuple,                   sym::tuple_trait,         tuple_trait,                Target::Trait,          GenericRequirement::Exact(0);
+
    SliceLen,                sym::slice_len_fn,        slice_len_fn,               Target::Method(MethodKind::Inherent), GenericRequirement::None;

    // Language items from AST lowering