From bc651cac8d671aee9be876b71d0fa86f94f56b0f Mon Sep 17 00:00:00 2001
From: Ulrik Sverdrup <bluss@users.noreply.github.com>
Date: Mon, 15 Jan 2018 19:59:10 +0100
Subject: core: Stabilize FusedIterator

FusedIterator is a marker trait that promises that the implementing
iterator continues to return `None` from `.next()` once it has returned
`None` once (and/or `.next_back()`, if implemented).

The effects of FusedIterator are already widely available through
`.fuse()`, but with stable `FusedIterator`, stable Rust users can
implement this trait for their iterators when appropriate.
---
 src/libstd_unicode/char.rs  | 4 ++--
 src/libstd_unicode/lib.rs   | 1 -
 src/libstd_unicode/u_str.rs | 4 ++--
 3 files changed, 4 insertions(+), 5 deletions(-)

(limited to 'src/libstd_unicode')

diff --git a/src/libstd_unicode/char.rs b/src/libstd_unicode/char.rs
index 844ff7a3c12..2bbbf6c0655 100644
--- a/src/libstd_unicode/char.rs
+++ b/src/libstd_unicode/char.rs
@@ -70,7 +70,7 @@ impl Iterator for ToLowercase {
     }
 }
 
-#[unstable(feature = "fused", issue = "35602")]
+#[stable(feature = "fused", since = "1.25.0")]
 impl FusedIterator for ToLowercase {}
 
 /// Returns an iterator that yields the uppercase equivalent of a `char`.
@@ -92,7 +92,7 @@ impl Iterator for ToUppercase {
     }
 }
 
-#[unstable(feature = "fused", issue = "35602")]
+#[stable(feature = "fused", since = "1.25.0")]
 impl FusedIterator for ToUppercase {}
 
 #[derive(Debug)]
diff --git a/src/libstd_unicode/lib.rs b/src/libstd_unicode/lib.rs
index dcae7d0af40..f155b62e3cc 100644
--- a/src/libstd_unicode/lib.rs
+++ b/src/libstd_unicode/lib.rs
@@ -36,7 +36,6 @@
 #![feature(str_internals)]
 #![feature(decode_utf8)]
 #![feature(fn_traits)]
-#![feature(fused)]
 #![feature(lang_items)]
 #![feature(non_exhaustive)]
 #![feature(staged_api)]
diff --git a/src/libstd_unicode/u_str.rs b/src/libstd_unicode/u_str.rs
index 5d1611acb7e..ed2f205b580 100644
--- a/src/libstd_unicode/u_str.rs
+++ b/src/libstd_unicode/u_str.rs
@@ -127,7 +127,7 @@ impl<I> Iterator for Utf16Encoder<I>
     }
 }
 
-#[unstable(feature = "fused", issue = "35602")]
+#[stable(feature = "fused", since = "1.25.0")]
 impl<I> FusedIterator for Utf16Encoder<I>
     where I: FusedIterator<Item = char> {}
 
@@ -186,5 +186,5 @@ impl<'a> DoubleEndedIterator for SplitWhitespace<'a> {
     }
 }
 
-#[unstable(feature = "fused", issue = "35602")]
+#[stable(feature = "fused", since = "1.25.0")]
 impl<'a> FusedIterator for SplitWhitespace<'a> {}
-- 
cgit 1.4.1-3-g733a5