From fb094642e13fc7b41a55aa2eaba4361411cccf8f Mon Sep 17 00:00:00 2001
From: Oliver Middleton <olliemail27@gmail.com>
Date: Wed, 22 Nov 2017 00:49:28 +0000
Subject: [PATCH] Add missing Debug impls to std_unicode

Also adds #![deny(missing_debug_implementations)] so they don't get
missed again.
---
 src/libstd_unicode/char.rs  | 5 ++++-
 src/libstd_unicode/lib.rs   | 1 +
 src/libstd_unicode/lossy.rs | 1 +
 src/libstd_unicode/u_str.rs | 1 +
 4 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/libstd_unicode/char.rs b/src/libstd_unicode/char.rs
index e20937c6c7b..0faf5bd9121 100644
--- a/src/libstd_unicode/char.rs
+++ b/src/libstd_unicode/char.rs
@@ -57,6 +57,7 @@
 /// [`to_lowercase`]: ../../std/primitive.char.html#method.to_lowercase
 /// [`char`]: ../../std/primitive.char.html
 #[stable(feature = "rust1", since = "1.0.0")]
+#[derive(Debug)]
 pub struct ToLowercase(CaseMappingIter);
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -78,6 +79,7 @@ impl FusedIterator for ToLowercase {}
 /// [`to_uppercase`]: ../../std/primitive.char.html#method.to_uppercase
 /// [`char`]: ../../std/primitive.char.html
 #[stable(feature = "rust1", since = "1.0.0")]
+#[derive(Debug)]
 pub struct ToUppercase(CaseMappingIter);
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -91,6 +93,7 @@ fn next(&mut self) -> Option<char> {
 #[unstable(feature = "fused", issue = "35602")]
 impl FusedIterator for ToUppercase {}
 
+#[derive(Debug)]
 enum CaseMappingIter {
     Three(char, char, char),
     Two(char, char),
@@ -1450,7 +1453,7 @@ pub fn is_ascii_control(&self) -> bool {
 
 /// An iterator that decodes UTF-16 encoded code points from an iterator of `u16`s.
 #[stable(feature = "decode_utf16", since = "1.9.0")]
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct DecodeUtf16<I>
     where I: Iterator<Item = u16>
 {
diff --git a/src/libstd_unicode/lib.rs b/src/libstd_unicode/lib.rs
index 65058b6554a..22f8bdab2f7 100644
--- a/src/libstd_unicode/lib.rs
+++ b/src/libstd_unicode/lib.rs
@@ -28,6 +28,7 @@
        issue_tracker_base_url = "https://github.com/rust-lang/rust/issues/",
        test(no_crate_inject, attr(allow(unused_variables), deny(warnings))))]
 #![deny(warnings)]
+#![deny(missing_debug_implementations)]
 #![no_std]
 
 #![feature(ascii_ctype)]
diff --git a/src/libstd_unicode/lossy.rs b/src/libstd_unicode/lossy.rs
index 253dcb6a159..cc8e93308a5 100644
--- a/src/libstd_unicode/lossy.rs
+++ b/src/libstd_unicode/lossy.rs
@@ -38,6 +38,7 @@ pub fn chunks(&self) -> Utf8LossyChunksIter {
 
 /// Iterator over lossy UTF-8 string
 #[unstable(feature = "str_internals", issue = "0")]
+#[allow(missing_debug_implementations)]
 pub struct Utf8LossyChunksIter<'a> {
     source: &'a [u8],
 }
diff --git a/src/libstd_unicode/u_str.rs b/src/libstd_unicode/u_str.rs
index 0046e3f7bd0..5d1611acb7e 100644
--- a/src/libstd_unicode/u_str.rs
+++ b/src/libstd_unicode/u_str.rs
@@ -76,6 +76,7 @@ fn trim_right(&self) -> &str {
 
 /// Iterator adaptor for encoding `char`s to UTF-16.
 #[derive(Clone)]
+#[allow(missing_debug_implementations)]
 pub struct Utf16Encoder<I> {
     chars: I,
     extra: u16,
-- 
2.44.0