Rollup of 4 pull requests

compiler/rustc_infer/src/infer/error_reporting/nice_region_error/named_anon_conflict.rs

@@ -114,12 +114,16 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> {
         );
 
         diag.span_label(span, format!("lifetime `{}` required", named));
-        diag.span_suggestion(
-            new_ty_span,
-            &format!("add explicit lifetime `{}` to {}", named, span_label_var),
-            new_ty.to_string(),
-            Applicability::Unspecified,
-        );
+        // Suggesting `'static` is nearly always incorrect, and can steer users
+        // down the wrong path.
+        if *named != ty::ReStatic {
+            diag.span_suggestion(
+                new_ty_span,
+                &format!("add explicit lifetime `{}` to {}", named, span_label_var),
+                new_ty.to_string(),
+                Applicability::Unspecified,
+            );
+        }
 
         Some(diag)
     }

compiler/rustc_metadata/src/rmeta/decoder.rs

@@ -27,7 +27,7 @@ use rustc_middle::middle::exported_symbols::{ExportedSymbol, SymbolExportLevel};
 use rustc_middle::mir::interpret::{AllocDecodingSession, AllocDecodingState};
 use rustc_middle::mir::{self, Body, Promoted};
 use rustc_middle::ty::codec::TyDecoder;
-use rustc_middle::ty::{self, Ty, TyCtxt};
+use rustc_middle::ty::{self, Ty, TyCtxt, Visibility};
 use rustc_serialize::{opaque, Decodable, Decoder};
 use rustc_session::Session;
 use rustc_span::hygiene::ExpnDataDecodeMode;
@@ -1312,6 +1312,17 @@ impl<'a, 'tcx> CrateMetadataRef<'a> {
             .collect()
     }
 
+    fn get_struct_field_visibilities(&self, id: DefIndex) -> Vec<Visibility> {
+        self.root
+            .tables
+            .children
+            .get(self, id)
+            .unwrap_or_else(Lazy::empty)
+            .decode(self)
+            .map(|field_index| self.get_visibility(field_index))
+            .collect()
+    }
+
     fn get_inherent_implementations_for_type(
         &self,
         tcx: TyCtxt<'tcx>,

compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs

@@ -8,7 +8,7 @@ use rustc_ast::expand::allocator::AllocatorKind;
 use rustc_data_structures::stable_map::FxHashMap;
 use rustc_data_structures::svh::Svh;
 use rustc_hir as hir;
-use rustc_hir::def::DefKind;
+use rustc_hir::def::{CtorKind, DefKind};
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, CRATE_DEF_INDEX, LOCAL_CRATE};
 use rustc_hir::definitions::{DefKey, DefPath, DefPathHash};
 use rustc_middle::hir::exports::Export;
@@ -17,7 +17,7 @@ use rustc_middle::middle::cstore::{CrateSource, CrateStore, EncodedMetadata};
 use rustc_middle::middle::exported_symbols::ExportedSymbol;
 use rustc_middle::middle::stability::DeprecationEntry;
 use rustc_middle::ty::query::Providers;
-use rustc_middle::ty::{self, TyCtxt};
+use rustc_middle::ty::{self, TyCtxt, Visibility};
 use rustc_session::utils::NativeLibKind;
 use rustc_session::{CrateDisambiguator, Session};
 use rustc_span::source_map::{Span, Spanned};
@@ -392,6 +392,20 @@ impl CStore {
         self.get_crate_data(def.krate).get_struct_field_names(def.index, sess)
     }
 
+    pub fn struct_field_visibilities_untracked(&self, def: DefId) -> Vec<Visibility> {
+        self.get_crate_data(def.krate).get_struct_field_visibilities(def.index)
+    }
+
+    pub fn ctor_def_id_and_kind_untracked(&self, def: DefId) -> Option<(DefId, CtorKind)> {
+        self.get_crate_data(def.krate).get_ctor_def_id(def.index).map(|ctor_def_id| {
+            (ctor_def_id, self.get_crate_data(def.krate).get_ctor_kind(def.index))
+        })
+    }
+
+    pub fn visibility_untracked(&self, def: DefId) -> Visibility {
+        self.get_crate_data(def.krate).get_visibility(def.index)
+    }
+
     pub fn item_children_untracked(
         &self,
         def_id: DefId,

compiler/rustc_resolve/src/build_reduced_graph.rs

@@ -995,7 +995,20 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
         // Record some extra data for better diagnostics.
         let cstore = self.r.cstore();
         match res {
-            Res::Def(DefKind::Struct | DefKind::Union, def_id) => {
+            Res::Def(DefKind::Struct, def_id) => {
+                let field_names = cstore.struct_field_names_untracked(def_id, self.r.session);
+                let ctor = cstore.ctor_def_id_and_kind_untracked(def_id);
+                if let Some((ctor_def_id, ctor_kind)) = ctor {
+                    let ctor_res = Res::Def(DefKind::Ctor(CtorOf::Struct, ctor_kind), ctor_def_id);
+                    let ctor_vis = cstore.visibility_untracked(ctor_def_id);
+                    let field_visibilities = cstore.struct_field_visibilities_untracked(def_id);
+                    self.r
+                        .struct_constructors
+                        .insert(def_id, (ctor_res, ctor_vis, field_visibilities));
+                }
+                self.insert_field_names(def_id, field_names);
+            }
+            Res::Def(DefKind::Union, def_id) => {
                 let field_names = cstore.struct_field_names_untracked(def_id, self.r.session);
                 self.insert_field_names(def_id, field_names);
             }
@@ -1007,12 +1020,6 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
                     self.r.has_self.insert(def_id);
                 }
             }
-            Res::Def(DefKind::Ctor(CtorOf::Struct, ..), def_id) => {
-                let parent = cstore.def_key(def_id).parent;
-                if let Some(struct_def_id) = parent.map(|index| DefId { index, ..def_id }) {
-                    self.r.struct_constructors.insert(struct_def_id, (res, vis, vec![]));
-                }
-            }
             _ => {}
         }
     }

library/core/src/num/wrapping.rs

@@ -433,6 +433,21 @@ macro_rules! wrapping_int_impl {
             #[unstable(feature = "wrapping_int_impl", issue = "32463")]
             pub const MAX: Self = Self(<$t>::MAX);
 
+            /// Returns the size of this integer type in bits.
+            ///
+            /// # Examples
+            ///
+            /// Basic usage:
+            ///
+            /// ```
+            /// #![feature(wrapping_int_impl)]
+            /// use std::num::Wrapping;
+            ///
+            #[doc = concat!("assert_eq!(<Wrapping<", stringify!($t), ">>::BITS, ", stringify!($t), "::BITS);")]
+            /// ```
+            #[unstable(feature = "wrapping_int_impl", issue = "32463")]
+            pub const BITS: u32 = <$t>::BITS;
+
             /// Returns the number of ones in the binary representation of `self`.
             ///
             /// # Examples

src/librustdoc/html/render/print_item.rs

@@ -573,10 +573,6 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
         )
     }
 
-    fn write_loading_content(w: &mut Buffer, extra_content: &str) {
-        write!(w, "{}<span class=\"loading-content\">Loading content...</span>", extra_content)
-    }
-
     fn trait_item(w: &mut Buffer, cx: &Context<'_>, m: &clean::Item, t: &clean::Item) {
         let name = m.name.as_ref().unwrap();
         info!("Documenting {} on {:?}", name, t.name);
@@ -601,7 +597,7 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
         for t in types {
             trait_item(w, cx, t, it);
         }
-        write_loading_content(w, "</div>");
+        w.write_str("</div>");
     }
 
     if !consts.is_empty() {
@@ -614,7 +610,7 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
         for t in consts {
             trait_item(w, cx, t, it);
         }
-        write_loading_content(w, "</div>");
+        w.write_str("</div>");
     }
 
     // Output the documentation for each function individually
@@ -628,7 +624,7 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
         for m in required {
             trait_item(w, cx, m, it);
         }
-        write_loading_content(w, "</div>");
+        w.write_str("</div>");
     }
     if !provided.is_empty() {
         write_small_section_header(
@@ -640,7 +636,7 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
         for m in provided {
             trait_item(w, cx, m, it);
         }
-        write_loading_content(w, "</div>");
+        w.write_str("</div>");
     }
 
     // If there are methods directly on this trait object, render them here.
@@ -703,7 +699,6 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
                     &[],
                 );
             }
-            write_loading_content(w, "");
         }
 
         write_small_section_header(
@@ -715,7 +710,7 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
         for implementor in concrete {
             render_implementor(cx, implementor, it, w, &implementor_dups, &[]);
         }
-        write_loading_content(w, "</div>");
+        w.write_str("</div>");
 
         if t.is_auto {
             write_small_section_header(
@@ -734,7 +729,7 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
                     &collect_paths_for_type(implementor.inner_impl().for_.clone(), &cx.cache),
                 );
             }
-            write_loading_content(w, "</div>");
+            w.write_str("</div>");
         }
     } else {
         // even without any implementations to write in, we still want the heading and list, so the
@@ -743,18 +738,16 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
             w,
             "implementors",
             "Implementors",
-            "<div class=\"item-list\" id=\"implementors-list\">",
+            "<div class=\"item-list\" id=\"implementors-list\"></div>",
         );
-        write_loading_content(w, "</div>");
 
         if t.is_auto {
             write_small_section_header(
                 w,
                 "synthetic-implementors",
                 "Auto implementors",
-                "<div class=\"item-list\" id=\"synthetic-implementors-list\">",
+                "<div class=\"item-list\" id=\"synthetic-implementors-list\"></div>",
             );
-            write_loading_content(w, "</div>");
         }
     }