Rollup of 5 pull requests

src/librustc_mir/dataflow/impls/borrows.rs

@@ -361,7 +361,7 @@ impl<'a, 'gcx, 'tcx> Borrows<'a, 'gcx, 'tcx> {
                 }
             }
 
-            mir::StatementKind::Assign(_, ref rhs) => {
+            mir::StatementKind::Assign(ref lhs, ref rhs) => {
                 // NOTE: if/when the Assign case is revised to inspect
                 // the assigned_place here, make sure to also
                 // re-consider the current implementations of the
@@ -382,6 +382,22 @@ impl<'a, 'gcx, 'tcx> Borrows<'a, 'gcx, 'tcx> {
                         panic!("could not find BorrowIndexs for region {:?}", region);
                     }).contains(&index));
                     sets.gen(&ReserveOrActivateIndex::reserved(*index));
+
+                    if is_activations {
+                        // Issue #46746: Two-phase borrows handles
+                        // stmts of form `Tmp = &mut Borrow` ...
+                        match lhs {
+                            Place::Local(..) => {} // okay
+                            Place::Static(..) => unreachable!(), // (filtered by is_unsafe_place)
+                            Place::Projection(..) => {
+                                // ... can assign into projections,
+                                // e.g. `box (&mut _)`. Current
+                                // conservative solution: force
+                                // immediate activation here.
+                                sets.gen(&ReserveOrActivateIndex::active(*index));
+                            }
+                        }
+                    }
                 }
             }
 

src/librustc_typeck/check/method/suggest.rs

@@ -122,7 +122,7 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                                                impl_ty);
                         if let Some(note_span) = note_span {
                             // We have a span pointing to the method. Show note with snippet.
-                            err.span_note(note_span, &note_str);
+                            err.span_note(self.tcx.sess.codemap().def_span(note_span), &note_str);
                         } else {
                             err.note(&note_str);
                         }
@@ -131,7 +131,8 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                         let item = self
                             .associated_item(trait_did, item_name, Namespace::Value)
                             .unwrap();
-                        let item_span = self.tcx.def_span(item.def_id);
+                        let item_span = self.tcx.sess.codemap()
+                            .def_span(self.tcx.def_span(item.def_id));
                         span_note!(err,
                                    item_span,
                                    "candidate #{} is defined in the trait `{}`",

src/librustdoc/html/static/main.js

@@ -109,24 +109,32 @@
     function showSidebar() {
         var elems = document.getElementsByClassName("sidebar-elems")[0];
         if (elems) {
-            elems.style.display = "block";
+            addClass(elems, "show-it");
         }
         var sidebar = document.getElementsByClassName('sidebar')[0];
-        sidebar.style.position = 'fixed';
-        sidebar.style.width = '100%';
-        sidebar.style.marginLeft = '0';
+        if (sidebar) {
+            addClass(sidebar, 'mobile');
+            var filler = document.getElementById("sidebar-filler");
+            if (!filler) {
+                var div = document.createElement("div");
+                div.id = "sidebar-filler";
+                sidebar.appendChild(div);
+            }
+        }
         document.getElementsByTagName("body")[0].style.marginTop = '45px';
     }
 
     function hideSidebar() {
         var elems = document.getElementsByClassName("sidebar-elems")[0];
         if (elems) {
-            elems.style.display = "";
+            removeClass(elems, "show-it");
         }
         var sidebar = document.getElementsByClassName('sidebar')[0];
-        sidebar.style.position = '';
-        sidebar.style.width = '';
-        sidebar.style.marginLeft = '';
+        removeClass(sidebar, 'mobile');
+        var filler = document.getElementById("sidebar-filler");
+        if (filler) {
+            filler.remove();
+        }
         document.getElementsByTagName("body")[0].style.marginTop = '';
     }
 
@@ -1859,7 +1867,7 @@
     if (sidebar_menu) {
         sidebar_menu.onclick = function() {
             var sidebar = document.getElementsByClassName('sidebar')[0];
-            if (sidebar.style.position === "fixed") {
+            if (hasClass(sidebar, "mobile") === true) {
                 hideSidebar();
             } else {
                 showSidebar();

src/librustdoc/html/static/rustdoc.css

@@ -1020,6 +1020,33 @@ h4 > .important-traits {
 	#titles {
 		height: 50px;
 	}
+
+	.sidebar.mobile {
+		position: fixed;
+		width: 100%;
+		margin-left: 0;
+		background-color: rgba(0,0,0,0);
+		height: 100%;
+	}
+
+	.show-it {
+		display: block;
+	}
+
+	/* Because of ios, we need to actually have a full height sidebar title so the
+	 * actual sidebar can show up. But then we need to make it transparent so we don't
+	 * hide content. The filler just allows to create the background for the sidebar
+	 * title. But because of the absolute position, I had to lower the z-index.
+	 */
+	#sidebar-filler {
+		position: fixed;
+		left: 45px;
+		width: calc(100% - 45px);
+		top: 0;
+		height: 45px;
+		z-index: -1;
+		border-bottom: 1px solid;
+	}
 }
 
 

src/librustdoc/html/static/styles/main.css

@@ -191,7 +191,7 @@ a.test-arrow {
 
 #help > div {
 	background: #e9e9e9;
-	border-color: #bfbfbf;;
+	border-color: #bfbfbf;
 }
 
 #help dt {
@@ -342,4 +342,9 @@ pre.ignore:hover, .information:hover + pre.ignore {
 		background-color: #F1F1F1;
 		border-right-color: #000;
 	}
+
+	#sidebar-filler {
+		background-color: #F1F1F1;
+		border-bottom-color: #e0e0e0;
+	}
 }

src/libstd/io/mod.rs

@@ -441,7 +441,7 @@ fn read_to_end<R: Read + ?Sized>(r: &mut R, buf: &mut Vec<u8>) -> Result<usize>
 /// # }
 /// ```
 ///
-/// Read from `&str` because [`&[u8]`] implements `Read`:
+/// Read from [`&str`] because [`&[u8]`][slice] implements `Read`:
 ///
 /// ```
 /// # use std::io;
@@ -464,7 +464,8 @@ fn read_to_end<R: Read + ?Sized>(r: &mut R, buf: &mut Vec<u8>) -> Result<usize>
 /// [`File`]: ../fs/struct.File.html
 /// [`BufRead`]: trait.BufRead.html
 /// [`BufReader`]: struct.BufReader.html
-/// [`&[u8]`]: primitive.slice.html
+/// [`&str`]: ../../std/primitive.str.html
+/// [slice]: ../../std/primitive.slice.html
 #[stable(feature = "rust1", since = "1.0.0")]
 #[doc(spotlight)]
 pub trait Read {

src/libsyntax/ast.rs

@@ -20,7 +20,6 @@ use syntax_pos::{Span, DUMMY_SP};
 use codemap::{respan, Spanned};
 use abi::Abi;
 use ext::hygiene::{Mark, SyntaxContext};
-use parse::parser::{RecoverQPath, PathStyle};
 use print::pprust;
 use ptr::P;
 use rustc_data_structures::indexed_vec;
@@ -485,6 +484,30 @@ impl fmt::Debug for Pat {
 }
 
 impl Pat {
+    pub(super) fn to_ty(&self) -> Option<P<Ty>> {
+        let node = match &self.node {
+            PatKind::Wild => TyKind::Infer,
+            PatKind::Ident(BindingMode::ByValue(Mutability::Immutable), ident, None) =>
+                TyKind::Path(None, Path::from_ident(ident.span, ident.node)),
+            PatKind::Path(qself, path) => TyKind::Path(qself.clone(), path.clone()),
+            PatKind::Mac(mac) => TyKind::Mac(mac.clone()),
+            PatKind::Ref(pat, mutbl) =>
+                pat.to_ty().map(|ty| TyKind::Rptr(None, MutTy { ty, mutbl: *mutbl }))?,
+            PatKind::Slice(pats, None, _) if pats.len() == 1 =>
+                pats[0].to_ty().map(TyKind::Slice)?,
+            PatKind::Tuple(pats, None) => {
+                let mut tys = Vec::new();
+                for pat in pats {
+                    tys.push(pat.to_ty()?);
+                }
+                TyKind::Tup(tys)
+            }
+            _ => return None,
+        };
+
+        Some(P(Ty { node, id: self.id, span: self.span }))
+    }
+
     pub fn walk<F>(&self, it: &mut F) -> bool
         where F: FnMut(&Pat) -> bool
     {
@@ -520,38 +543,6 @@ impl Pat {
     }
 }
 
-impl RecoverQPath for Pat {
-    fn to_ty(&self) -> Option<P<Ty>> {
-        let node = match &self.node {
-            PatKind::Wild => TyKind::Infer,
-            PatKind::Ident(BindingMode::ByValue(Mutability::Immutable), ident, None) =>
-                TyKind::Path(None, Path::from_ident(ident.span, ident.node)),
-            PatKind::Path(qself, path) => TyKind::Path(qself.clone(), path.clone()),
-            PatKind::Mac(mac) => TyKind::Mac(mac.clone()),
-            PatKind::Ref(pat, mutbl) =>
-                pat.to_ty().map(|ty| TyKind::Rptr(None, MutTy { ty, mutbl: *mutbl }))?,
-            PatKind::Slice(pats, None, _) if pats.len() == 1 =>
-                pats[0].to_ty().map(TyKind::Slice)?,
-            PatKind::Tuple(pats, None) => {
-                let mut tys = Vec::new();
-                for pat in pats {
-                    tys.push(pat.to_ty()?);
-                }
-                TyKind::Tup(tys)
-            }
-            _ => return None,
-        };
-
-        Some(P(Ty { node, id: self.id, span: self.span }))
-    }
-    fn to_recovered(&self, qself: Option<QSelf>, path: Path) -> Self {
-        Self { span: path.span, node: PatKind::Path(qself, path), id: self.id }
-    }
-    fn to_string(&self) -> String {
-        pprust::pat_to_string(self)
-    }
-}
-
 /// A single field in a struct pattern
 ///
 /// Patterns like the fields of Foo `{ x, ref y, ref mut z }`
@@ -919,10 +910,8 @@ impl Expr {
             _ => None,
         }
     }
-}
 
-impl RecoverQPath for Expr {
-    fn to_ty(&self) -> Option<P<Ty>> {
+    pub(super) fn to_ty(&self) -> Option<P<Ty>> {
         let node = match &self.node {
             ExprKind::Path(qself, path) => TyKind::Path(qself.clone(), path.clone()),
             ExprKind::Mac(mac) => TyKind::Mac(mac.clone()),
@@ -951,13 +940,6 @@ impl RecoverQPath for Expr {
 
         Some(P(Ty { node, id: self.id, span: self.span }))
     }
-    fn to_recovered(&self, qself: Option<QSelf>, path: Path) -> Self {
-        Self { span: path.span, node: ExprKind::Path(qself, path),
-               id: self.id, attrs: self.attrs.clone() }
-    }
-    fn to_string(&self) -> String {
-        pprust::expr_to_string(self)
-    }
 }
 
 impl fmt::Debug for Expr {
@@ -1469,19 +1451,6 @@ pub struct Ty {
     pub span: Span,
 }
 
-impl RecoverQPath for Ty {
-    fn to_ty(&self) -> Option<P<Ty>> {
-        Some(P(self.clone()))
-    }
-    fn to_recovered(&self, qself: Option<QSelf>, path: Path) -> Self {
-        Self { span: path.span, node: TyKind::Path(qself, path), id: self.id }
-    }
-    fn to_string(&self) -> String {
-        pprust::ty_to_string(self)
-    }
-    const PATH_STYLE: PathStyle = PathStyle::Type;
-}
-
 impl fmt::Debug for Ty {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "type({})", pprust::ty_to_string(self))