2 files changed, 11 insertions, 1 deletions
diff --git a/compiler/rustc_attr_parsing/src/attributes/lint_helpers.rs b/compiler/rustc_attr_parsing/src/attributes/lint_helpers.rs
index 8ad98c8d1d4..0eceff53e8b 100644
--- a/compiler/rustc_attr_parsing/src/attributes/lint_helpers.rs
+++ b/compiler/rustc_attr_parsing/src/attributes/lint_helpers.rs
@@ -24,3 +24,10 @@ impl<S: Stage> NoArgsAttributeParser<S> for PassByValueParser {
     const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
     const CREATE: fn(Span) -> AttributeKind = AttributeKind::PassByValue;
 }
+
+pub(crate) struct AutomaticallyDerivedParser;
+impl<S: Stage> NoArgsAttributeParser<S> for AutomaticallyDerivedParser {
+    const PATH: &[Symbol] = &[sym::automatically_derived];
+    const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Warn;
+    const CREATE: fn(Span) -> AttributeKind = AttributeKind::AutomaticallyDerived;
+}
diff --git a/compiler/rustc_attr_parsing/src/context.rs b/compiler/rustc_attr_parsing/src/context.rs
index cc10bb3098a..0b34fe0a592 100644
--- a/compiler/rustc_attr_parsing/src/context.rs
+++ b/compiler/rustc_attr_parsing/src/context.rs
@@ -27,7 +27,9 @@ use crate::attributes::link_attrs::{
     ExportStableParser, FfiConstParser, FfiPureParser, LinkNameParser, LinkSectionParser,
     StdInternalSymbolParser,
 };
-use crate::attributes::lint_helpers::{AsPtrParser, PassByValueParser, PubTransparentParser};
+use crate::attributes::lint_helpers::{
+    AsPtrParser, AutomaticallyDerivedParser, PassByValueParser, PubTransparentParser,
+};
 use crate::attributes::loop_match::{ConstContinueParser, LoopMatchParser};
 use crate::attributes::must_use::MustUseParser;
 use crate::attributes::no_implicit_prelude::NoImplicitPreludeParser;
@@ -153,6 +155,7 @@ attribute_parsers!(
         Single<TransparencyParser>,
         Single<WithoutArgs<AllowIncoherentImplParser>>,
         Single<WithoutArgs<AsPtrParser>>,
+        Single<WithoutArgs<AutomaticallyDerivedParser>>,
         Single<WithoutArgs<CoherenceIsCoreParser>>,
         Single<WithoutArgs<CoinductiveParser>>,
         Single<WithoutArgs<ColdParser>>,