From 34a14349b7c79faef22d2765905c4804ba68235d Mon Sep 17 00:00:00 2001
From: Philipp Krones <hello@philkrones.com>
Date: Thu, 17 Nov 2022 19:32:28 +0100
Subject: [PATCH] Readd the matches_macro diag item

This is now used by Clippy
---
 compiler/rustc_span/src/symbol.rs | 1 +
 library/core/src/macros/mod.rs    | 1 +
 2 files changed, 2 insertions(+)

diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs
index a56450a3573..02848bcffb2 100644
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@@ -893,6 +893,7 @@
         masked,
         match_beginning_vert,
         match_default_bindings,
+        matches_macro,
         maxnumf32,
         maxnumf64,
         may_dangle,
diff --git a/library/core/src/macros/mod.rs b/library/core/src/macros/mod.rs
index 34247c05845..c20ca69a1c6 100644
--- a/library/core/src/macros/mod.rs
+++ b/library/core/src/macros/mod.rs
@@ -338,6 +338,7 @@ macro_rules! debug_assert_ne {
 /// ```
 #[macro_export]
 #[stable(feature = "matches_macro", since = "1.42.0")]
+#[cfg_attr(not(test), rustc_diagnostic_item = "matches_macro")]
 macro_rules! matches {
     ($expression:expr, $(|)? $( $pattern:pat_param )|+ $( if $guard: expr )? $(,)?) => {
         match $expression {