From 29ce695cd4e148682b0d439cc47dd36edb494673 Mon Sep 17 00:00:00 2001
From: mejrs <59372212+mejrs@users.noreply.github.com>
Date: Tue, 17 Jun 2025 19:37:29 +0200
Subject: Stop dbg! macro yapping about format modifiers

---
 library/std/src/macros.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'library/std/src')

diff --git a/library/std/src/macros.rs b/library/std/src/macros.rs
index f008d42804c..25e2b7ea137 100644
--- a/library/std/src/macros.rs
+++ b/library/std/src/macros.rs
@@ -363,7 +363,14 @@ macro_rules! dbg {
         match $val {
             tmp => {
                 $crate::eprintln!("[{}:{}:{}] {} = {:#?}",
-                    $crate::file!(), $crate::line!(), $crate::column!(), $crate::stringify!($val), &tmp);
+                    $crate::file!(),
+                    $crate::line!(),
+                    $crate::column!(),
+                    $crate::stringify!($val),
+                    // The `&T: Debug` check happens here (not in the format literal desugaring)
+                    // to avoid format literal related messages and suggestions.
+                    &&tmp as &dyn $crate::fmt::Debug,
+                );
                 tmp
             }
         }
-- 
cgit 1.4.1-3-g733a5