From 73775a96dcc04ea4d592be5f21040f2401e0aadd Mon Sep 17 00:00:00 2001
From: reez12g <reez12g@gmail.com>
Date: Fri, 16 Sep 2022 20:10:25 +0900
Subject: [PATCH] Fix docs in
 compiler/rustc_builtin_macros/src/deriving/generic/mod.rs

---
 compiler/rustc_builtin_macros/src/deriving/generic/mod.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs b/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs
index 3cc160adb539..69ce0fbc02bd 100644
--- a/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs
+++ b/compiler/rustc_builtin_macros/src/deriving/generic/mod.rs
@@ -1110,6 +1110,11 @@ impl<'a> MethodDef<'a> {
     /// ```
     /// is equivalent to:
     /// ```
+    /// #![feature(core_intrinsics)]
+    /// enum A {
+    ///     A1,
+    ///     A2(i32)
+    /// }
     /// impl ::core::cmp::PartialEq for A {
     ///     #[inline]
     ///     fn eq(&self, other: &A) -> bool {