Merge branch 'master' into rusty-hermit, resolve conflicts

5 files changed, 19 insertions, 27 deletions

diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index 8be7f4478fa..51a62cd0658 100644
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -1305,7 +1305,8 @@ impl MacroDef {
     }
 }
 
-#[derive(Clone, RustcEncodable, RustcDecodable, Debug, Copy)]
+// Clippy uses Hash and PartialEq
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug, Copy, Hash, PartialEq)]
 pub enum StrStyle {
     /// A regular string, like `"foo"`.
     Cooked,
@@ -1327,7 +1328,8 @@ pub struct Lit {
     pub span: Span,
 }
 
-#[derive(Clone, RustcEncodable, RustcDecodable, Debug, Copy)]
+// Clippy uses Hash and PartialEq
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug, Copy, Hash, PartialEq)]
 pub enum LitIntType {
     Signed(IntTy),
     Unsigned(UintTy),
@@ -1337,7 +1339,8 @@ pub enum LitIntType {
 /// Literal kind.
 ///
 /// E.g., `"foo"`, `42`, `12.34`, or `bool`.
-#[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
+// Clippy uses Hash and PartialEq
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug, Hash, PartialEq)]
 pub enum LitKind {
     /// A string literal (`"foo"`).
     Str(Symbol, StrStyle),
diff --git a/src/libsyntax/feature_gate/active.rs b/src/libsyntax/feature_gate/active.rs
index 94f0995566f..1386eac48da 100644
--- a/src/libsyntax/feature_gate/active.rs
+++ b/src/libsyntax/feature_gate/active.rs
@@ -528,6 +528,9 @@ declare_features! (
     /// Enable accurate caller location reporting during panic (RFC 2091).
     (active, track_caller, "1.40.0", Some(47809), None),
 
+    /// Non-object safe trait objects safe to use but cannot be created in safe rust
+    (active, object_safe_for_dispatch, "1.40.0", Some(43561), None),
+
     // -------------------------------------------------------------------------
     // feature-group-end: actual feature gates
     // -------------------------------------------------------------------------
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index 6bbd8be0cb9..2ce0046ca27 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -86,13 +86,6 @@ macro_rules! maybe_recover_from_interpolated_ty_qpath {
     }
 }
 
-fn maybe_append(mut lhs: Vec<Attribute>, mut rhs: Option<Vec<Attribute>>) -> Vec<Attribute> {
-    if let Some(ref mut rhs) = rhs {
-        lhs.append(rhs);
-    }
-    lhs
-}
-
 #[derive(Debug, Clone, Copy, PartialEq)]
 enum PrevTokenKind {
     DocComment,
diff --git a/src/libsyntax/parse/parser/item.rs b/src/libsyntax/parse/parser/item.rs
index 0acfd1450d8..73bd80e2a21 100644
--- a/src/libsyntax/parse/parser/item.rs
+++ b/src/libsyntax/parse/parser/item.rs
@@ -10,7 +10,6 @@ use crate::ast::{Visibility, VisibilityKind, Mutability, FnHeader, ForeignItem,
 use crate::ast::{Ty, TyKind, Generics, GenericBounds, TraitRef, EnumDef, VariantData, StructField};
 use crate::ast::{Mac, MacDelimiter, Block, BindingMode, FnDecl, MethodSig, SelfKind, Param};
 use crate::parse::token;
-use crate::parse::parser::maybe_append;
 use crate::tokenstream::{TokenTree, TokenStream};
 use crate::symbol::{kw, sym};
 use crate::source_map::{self, respan, Span};
@@ -416,10 +415,17 @@ impl<'a> Parser<'a> {
     ) -> PResult<'a, Option<P<Item>>> {
         let (ident, item, extra_attrs) = info;
         let span = lo.to(self.prev_span);
-        let attrs = maybe_append(attrs, extra_attrs);
+        let attrs = Self::maybe_append(attrs, extra_attrs);
         Ok(Some(self.mk_item(span, ident, item, vis, attrs)))
     }
 
+    fn maybe_append<T>(mut lhs: Vec<T>, mut rhs: Option<Vec<T>>) -> Vec<T> {
+        if let Some(ref mut rhs) = rhs {
+            lhs.append(rhs);
+        }
+        lhs
+    }
+
     /// This is the fall-through for parsing items.
     fn parse_macro_use_or_failure(
         &mut self,
diff --git a/src/libsyntax/tokenstream.rs b/src/libsyntax/tokenstream.rs
index ac155556cda..0559f224f1f 100644
--- a/src/libsyntax/tokenstream.rs
+++ b/src/libsyntax/tokenstream.rs
@@ -19,7 +19,6 @@ use syntax_pos::{BytePos, Span, DUMMY_SP};
 #[cfg(target_arch = "x86_64")]
 use rustc_data_structures::static_assert_size;
 use rustc_data_structures::sync::Lrc;
-use rustc_serialize::{Decoder, Decodable, Encoder, Encodable};
 use smallvec::{SmallVec, smallvec};
 
 use std::{iter, mem};
@@ -136,7 +135,7 @@ impl TokenTree {
 /// The goal is for procedural macros to work with `TokenStream`s and `TokenTree`s
 /// instead of a representation of the abstract syntax tree.
 /// Today's `TokenTree`s can still contain AST via `token::Interpolated` for back-compat.
-#[derive(Clone, Debug, Default)]
+#[derive(Clone, Debug, Default, RustcEncodable, RustcDecodable)]
 pub struct TokenStream(pub Lrc<Vec<TreeAndJoint>>);
 
 pub type TreeAndJoint = (TokenTree, IsJoint);
@@ -145,7 +144,7 @@ pub type TreeAndJoint = (TokenTree, IsJoint);
 #[cfg(target_arch = "x86_64")]
 static_assert_size!(TokenStream, 8);
 
-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, PartialEq, RustcEncodable, RustcDecodable)]
 pub enum IsJoint {
     Joint,
     NonJoint
@@ -460,18 +459,6 @@ impl Cursor {
     }
 }
 
-impl Encodable for TokenStream {
-    fn encode<E: Encoder>(&self, encoder: &mut E) -> Result<(), E::Error> {
-        self.trees().collect::<Vec<_>>().encode(encoder)
-    }
-}
-
-impl Decodable for TokenStream {
-    fn decode<D: Decoder>(decoder: &mut D) -> Result<TokenStream, D::Error> {
-        Vec::<TokenTree>::decode(decoder).map(|vec| vec.into_iter().collect())
-    }
-}
-
 #[derive(Debug, Copy, Clone, PartialEq, RustcEncodable, RustcDecodable)]
 pub struct DelimSpan {
     pub open: Span,