Implement #[rustc_skip_array_during_method_dispatch]

2021-04-12 16:03:53 -07:00
parent 2faef12b65
commit b79af2fcde
8 changed files with 38 additions and 1 deletions
--- a/compiler/rustc_feature/src/builtin_attrs.rs
+++ b/compiler/rustc_feature/src/builtin_attrs.rs
@@ -540,6 +540,11 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
        rustc_main, Normal, template!(Word),
        "the `#[rustc_main]` attribute is used internally to specify test entry point function",
    ),
+    rustc_attr!(
+        rustc_skip_array_during_method_dispatch, Normal, template!(Word),
+        "the `#[rustc_skip_array_during_method_dispatch]` attribute is used to exclude a trait \
+        from method dispatch when the receiver is an array, for compatibility in editions < 2021."
+    ),

    // ==========================================================================
    // Internal attributes, Testing: