Unstably constify impl IntoIterator for I: ~const Iterator

mbartlett21 · mbartlett21 · commit 91eda96e38a6 · 2022-03-15T06:07:18.000Z
diff --git a/library/core/src/iter/traits/collect.rs b/library/core/src/iter/traits/collect.rs
@@ -267,8 +267,9 @@ pub trait IntoIterator {
     fn into_iter(self) -> Self::IntoIter;
 }
 
+#[rustc_const_unstable(feature = "const_intoiterator_identity", issue = "90603")]
 #[stable(feature = "rust1", since = "1.0.0")]
-impl<I: Iterator> IntoIterator for I {
+impl<I: ~const Iterator> const IntoIterator for I {
     type Item = I::Item;
     type IntoIter = I;
 

Original file line number	Diff line number	Diff line change
`@@ -267,8 +267,9 @@ pub trait IntoIterator {`
`267`	`267`	`fn into_iter(self) -> Self::IntoIter;`
`268`	`268`	`}`
`269`	`269`
	`270`	`+#[rustc_const_unstable(feature = "const_intoiterator_identity", issue = "90603")]`
`270`	`271`	`#[stable(feature = "rust1", since = "1.0.0")]`
`271`		`-impl<I: Iterator> IntoIterator for I {`
	`272`	`+impl<I: ~const Iterator> const IntoIterator for I {`
`272`	`273`	`type Item = I::Item;`
`273`	`274`	`type IntoIter = I;`
`274`	`275`