fix rust-lang#90187

Author: zredb

src/librustdoc/clean/types.rs

@@ -338,6 +338,7 @@ impl ExternalCrate {
 }
 
 /// Indicates where an external crate can be found.
+#[derive(Debug)]
 crate enum ExternalLocation {
     /// Remote URL root of the external crate
     Remote(String),

src/librustdoc/formats/cache.rs

@@ -25,7 +25,7 @@ use crate::html::render::IndexItem;
 /// to be a fairly large and expensive structure to clone. Instead this adheres
 /// to `Send` so it may be stored in an `Arc` instance and shared among the various
 /// rendering threads.
-#[derive(Default)]
+#[derive(Default, Debug)]
 crate struct Cache {
     /// Maps a type ID to all known implementations for that type. This is only
     /// recognized for intra-crate [`clean::Type::Path`]s, and is used to print

src/librustdoc/html/render/search_index.rs

@@ -248,12 +248,14 @@ fn add_generics_and_bounds_as_types<'tcx>(
     tcx: TyCtxt<'tcx>,
     recurse: usize,
     res: &mut Vec<TypeWithKind>,
+    cache: &Cache,
 ) {
     fn insert_ty(
         res: &mut Vec<TypeWithKind>,
         tcx: TyCtxt<'_>,
         ty: Type,
         mut generics: Vec<TypeWithKind>,
+        cache: &Cache,
     ) {
         let is_full_generic = ty.is_full_generic();
 
@@ -347,14 +349,15 @@ fn add_generics_and_bounds_as_types<'tcx>(
                                     tcx,
                                     recurse + 1,
                                     &mut ty_generics,
+                                    cache,
                                 )
                             }
                             _ => {}
                         }
                     }
                 }
             }
-            insert_ty(res, tcx, arg.clone(), ty_generics);
+            insert_ty(res, tcx, arg.clone(), ty_generics, cache);
         }
         // Otherwise we check if the trait bounds are "inlined" like `T: Option<u32>`...
         if let Some(bound) = generics.params.iter().find(|g| g.is_type() && g.name == arg_s) {
@@ -368,10 +371,11 @@ fn add_generics_and_bounds_as_types<'tcx>(
                         tcx,
                         recurse + 1,
                         &mut ty_generics,
+                        cache,
                     );
                 }
             }
-            insert_ty(res, tcx, arg.clone(), ty_generics);
+            insert_ty(res, tcx, arg.clone(), ty_generics, cache);
         }
     } else {
         // This is not a type parameter. So for example if we have `T, U: Option<T>`, and we're
@@ -382,10 +386,17 @@ fn add_generics_and_bounds_as_types<'tcx>(
         let mut ty_generics = Vec::new();
         if let Some(arg_generics) = arg.generics() {
             for gen in arg_generics.iter() {
-                add_generics_and_bounds_as_types(generics, gen, tcx, recurse + 1, &mut ty_generics);
+                add_generics_and_bounds_as_types(
+                    generics,
+                    gen,
+                    tcx,
+                    recurse + 1,
+                    &mut ty_generics,
+                    cache,
+                );
             }
         }
-        insert_ty(res, tcx, arg.clone(), ty_generics);
+        insert_ty(res, tcx, arg.clone(), ty_generics, cache);
     }
 }
 
@@ -407,7 +418,7 @@ fn get_fn_inputs_and_outputs<'tcx>(
             continue;
         }
         let mut args = Vec::new();
-        add_generics_and_bounds_as_types(generics, &arg.type_, tcx, 0, &mut args);
+        add_generics_and_bounds_as_types(generics, &arg.type_, tcx, 0, &mut args, cache);
         if !args.is_empty() {
             all_types.extend(args);
         } else {
@@ -420,7 +431,7 @@ fn get_fn_inputs_and_outputs<'tcx>(
     let mut ret_types = Vec::new();
     match decl.output {
         FnRetTy::Return(ref return_type) => {
-            add_generics_and_bounds_as_types(generics, return_type, tcx, 0, &mut ret_types);
+            add_generics_and_bounds_as_types(generics, return_type, tcx, 0, &mut ret_types, cache);
             if ret_types.is_empty() {
                 if let Some(kind) = return_type.def_id(cache).map(|did| tcx.def_kind(did).into()) {
                     ret_types.push(TypeWithKind::from((get_index_type(return_type, vec![]), kind)));

src/librustdoc/passes/collect_trait_impls.rs

@@ -4,6 +4,7 @@
 use super::Pass;
 use crate::clean::*;
 use crate::core::DocContext;
+use crate::formats::cache::Cache;
 use crate::visit::DocVisitor;
 
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
@@ -57,14 +58,14 @@ crate fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> Crate
         }
     });
 
-    let mut cleaner = BadImplStripper { prims, items: crate_items };
+    let mut cleaner = BadImplStripper { prims, items: crate_items, cache: &cx.cache };
     let mut type_did_to_deref_target: FxHashMap<DefId, &Type> = FxHashMap::default();
 
     // Follow all `Deref` targets of included items and recursively add them as valid
     fn add_deref_target(
         cx: &DocContext<'_>,
         map: &FxHashMap<DefId, &Type>,
-        cleaner: &mut BadImplStripper,
+        cleaner: &mut BadImplStripper<'_>,
         type_did: DefId,
     ) {
         if let Some(target) = map.get(&type_did) {
@@ -204,19 +205,20 @@ impl DocVisitor for ItemCollector {
     }
 }
 
-struct BadImplStripper {
+struct BadImplStripper<'a> {
     prims: FxHashSet<PrimitiveType>,
     items: FxHashSet<ItemId>,
+    crate cache: &'a Cache,
 }
 
-impl BadImplStripper {
+impl<'a> BadImplStripper<'a> {
     fn keep_impl(&self, ty: &Type, is_deref: bool) -> bool {
         if let Generic(_) = ty {
             // keep impls made on generics
             true
         } else if let Some(prim) = ty.primitive_type() {
             self.prims.contains(&prim)
-        } else if let Some(did) = ty.def_id(&cx.cache) {
+        } else if let Some(did) = ty.def_id(self.cache) {
             is_deref || self.keep_impl_with_def_id(did.into())
         } else {
             false

src/librustdoc/passes/strip_hidden.rs

@@ -15,7 +15,7 @@ crate const STRIP_HIDDEN: Pass = Pass {
 };
 
 /// Strip items marked `#[doc(hidden)]`
-crate fn strip_hidden(krate: clean::Crate, _: &mut DocContext<'_>) -> clean::Crate {
+crate fn strip_hidden(krate: clean::Crate, cx: &mut DocContext<'_>) -> clean::Crate {
     let mut retained = ItemIdSet::default();
 
     // strip all #[doc(hidden)] items
@@ -25,7 +25,7 @@ crate fn strip_hidden(krate: clean::Crate, _: &mut DocContext<'_>) -> clean::Cra
     };
 
     // strip all impls referencing stripped items
-    let mut stripper = ImplStripper { retained: &retained };
+    let mut stripper = ImplStripper { retained: &retained, cache: &cx.cache };
     stripper.fold_crate(krate)
 }
 

src/librustdoc/passes/strip_private.rs

@@ -29,6 +29,6 @@ crate fn strip_private(mut krate: clean::Crate, cx: &mut DocContext<'_>) -> clea
     }
 
     // strip all impls referencing private items
-    let mut stripper = ImplStripper { retained: &retained };
+    let mut stripper = ImplStripper { retained: &retained, cache: &cx.cache };
     stripper.fold_crate(krate)
 }

src/librustdoc/passes/stripper.rs

@@ -5,6 +5,7 @@ use std::mem;
 
 use crate::clean::{self, Item, ItemIdSet};
 use crate::fold::{strip_item, DocFolder};
+use crate::formats::cache::Cache;
 
 crate struct Stripper<'a> {
     crate retained: &'a mut ItemIdSet,