From 289d7cca1dff4b142b1c208fd1dd5eb2ce0a628f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beno=C3=AEt=20du=20Garreau?= <bdgdlm@outlook.com>
Date: Wed, 24 Aug 2022 00:53:09 +0200
Subject: [PATCH] Reduce code size of `assert_matches_failed`

---
 library/core/src/panicking.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/library/core/src/panicking.rs b/library/core/src/panicking.rs
index 7a575a88e52e1..d4afe0f5326a3 100644
--- a/library/core/src/panicking.rs
+++ b/library/core/src/panicking.rs
@@ -190,11 +190,11 @@ pub fn assert_matches_failed<T: fmt::Debug + ?Sized>(
     right: &str,
     args: Option<fmt::Arguments<'_>>,
 ) -> ! {
-    // Use the Display implementation to display the pattern.
+    // The pattern is a string so it can be displayed directly.
     struct Pattern<'a>(&'a str);
     impl fmt::Debug for Pattern<'_> {
         fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-            fmt::Display::fmt(self.0, f)
+            f.write_str(self.0)
         }
     }
     assert_failed_inner(AssertKind::Match, &left, &Pattern(right), args);