From 730a53b32f5faba79e6afc1d7c45465f1cc5ac3b Mon Sep 17 00:00:00 2001
From: Nilstrieb <48135649+Nilstrieb@users.noreply.github.com>
Date: Mon, 25 Sep 2023 21:16:47 +0200
Subject: [PATCH] add missing feature gate for rustc_safe_intrinsic

---
 compiler/rustc_feature/src/builtin_attrs.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs
index 04ebe22a9eb8a..72eb5c3cbd457 100644
--- a/compiler/rustc_feature/src/builtin_attrs.rs
+++ b/compiler/rustc_feature/src/builtin_attrs.rs
@@ -537,7 +537,6 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
         allow_internal_unsafe, Normal, template!(Word), WarnFollowing,
         "allow_internal_unsafe side-steps the unsafe_code lint",
     ),
-    ungated!(rustc_safe_intrinsic, Normal, template!(Word), DuplicatesOk),
     rustc_attr!(rustc_allowed_through_unstable_modules, Normal, template!(Word), WarnFollowing,
     "rustc_allowed_through_unstable_modules special cases accidental stabilizations of stable items \
     through unstable paths"),
@@ -740,6 +739,12 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
         and it is only intended for internal use and as a desugaring."
     ),
 
+    rustc_attr!(
+        rustc_safe_intrinsic, AttributeType::Normal, template!(Word), ErrorFollowing,
+        "#[rustc_safe_intrinsics] declares intrinsics that are safe to use, tying it to the internal \
+        intrinsic mechanisms."
+    ),
+
     BuiltinAttribute {
         name: sym::rustc_diagnostic_item,
         // FIXME: This can be `true` once we always use `tcx.is_diagnostic_item`.