From cf94bdc0742c13e2a0cac864c478b8626b266e1b Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:11:38 +0200
Subject: Merging upstream version 1.66.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 library/core/src/tuple.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'library/core/src/tuple.rs')

diff --git a/library/core/src/tuple.rs b/library/core/src/tuple.rs
index aa8a2425b..fc91fe468 100644
--- a/library/core/src/tuple.rs
+++ b/library/core/src/tuple.rs
@@ -93,7 +93,8 @@ macro_rules! tuple_impls {
         maybe_tuple_doc! {
             $($T)+ @
             #[stable(feature = "rust1", since = "1.0.0")]
-            impl<$($T:Default),+> Default for ($($T,)+) {
+            #[rustc_const_unstable(feature = "const_default_impls", issue = "87864")]
+            impl<$($T: ~const Default),+> const Default for ($($T,)+) {
                 #[inline]
                 fn default() -> ($($T,)+) {
                     ($({ let x: $T = Default::default(); x},)+)
-- 
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