Auto merge of #88641 - Mark-Simulacrum:beta-next, r=Mark-Simulacrum

[beta] backports

This PR backports:

* Concrete regions can show up in mir borrowck if the originated from there #88533 (fixes #83190)
* Fix loading large rlibs #88506 (fixes #88351)
* Display associated types of implementors #88490 (fixes #86631)
* Tracking issue for UNSUPPORTED_CALLING_CONVENTIONS #88397

r? `@Mark-Simulacrum`

13 files changed, 124 insertions, 70 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 578a885a35d..085aae3d0b1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2141,9 +2141,9 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.4.0"
+version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b16bd47d9e329435e309c58469fe0791c2d0d1ba96ec0954152a5ae2b04387dc"
+checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
 
 [[package]]
 name = "memmap2"
@@ -2304,9 +2304,9 @@ dependencies = [
 
 [[package]]
 name = "object"
-version = "0.25.2"
+version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8bc1d42047cf336f0f939c99e97183cf31551bf0f2865a2ec9c8d91fd4ffb5e"
+checksum = "39f37e50073ccad23b6d09bcb5b263f4e76d3bb6038e4a3c08e52162ffa8abc2"
 dependencies = [
  "crc32fast",
  "indexmap",
@@ -3647,7 +3647,7 @@ dependencies = [
  "itertools 0.9.0",
  "jobserver",
  "libc",
- "object 0.25.2",
+ "object 0.26.2",
  "pathdiff",
  "rustc_apfloat",
  "rustc_ast",
diff --git a/compiler/rustc_codegen_ssa/Cargo.toml b/compiler/rustc_codegen_ssa/Cargo.toml
index a11098b11c6..f1e412df861 100644
--- a/compiler/rustc_codegen_ssa/Cargo.toml
+++ b/compiler/rustc_codegen_ssa/Cargo.toml
@@ -36,6 +36,6 @@ rustc_target = { path = "../rustc_target" }
 rustc_session = { path = "../rustc_session" }
 
 [dependencies.object]
-version = "0.25.2"
+version = "0.26.2"
 default-features = false
 features = ["read_core", "elf", "macho", "pe", "unaligned", "archive", "write"]
diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs
index 5b1cd0bcb3f..1b416f37bde 100644
--- a/compiler/rustc_lint_defs/src/builtin.rs
+++ b/compiler/rustc_lint_defs/src/builtin.rs
@@ -3345,6 +3345,6 @@ declare_lint! {
     Warn,
     "use of unsupported calling convention",
     @future_incompatible = FutureIncompatibleInfo {
-        reference: "issue #00000 <https://github.com/rust-lang/rust/issues/00000>",
+        reference: "issue #87678 <https://github.com/rust-lang/rust/issues/87678>",
     };
 }
diff --git a/compiler/rustc_mir/src/borrow_check/region_infer/opaque_types.rs b/compiler/rustc_mir/src/borrow_check/region_infer/opaque_types.rs
index e9ab62e1664..12fceeff088 100644
--- a/compiler/rustc_mir/src/borrow_check/region_infer/opaque_types.rs
+++ b/compiler/rustc_mir/src/borrow_check/region_infer/opaque_types.rs
@@ -82,15 +82,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
                             .find(|ur_vid| self.eval_equal(vid, **ur_vid))
                             .and_then(|ur_vid| self.definitions[*ur_vid].external_name)
                             .unwrap_or(infcx.tcx.lifetimes.re_root_empty),
-                        ty::ReLateBound(..) => region,
-                        ty::ReStatic => region,
-                        _ => {
-                            infcx.tcx.sess.delay_span_bug(
-                                span,
-                                &format!("unexpected concrete region in borrowck: {:?}", region),
-                            );
-                            region
-                        }
+                        _ => region,
                     });
 
                 debug!(?universal_concrete_type, ?universal_substs);
diff --git a/src/librustdoc/html/render/mod.rs b/src/librustdoc/html/render/mod.rs
index 2b7f7aa3691..fab7440817c 100644
--- a/src/librustdoc/html/render/mod.rs
+++ b/src/librustdoc/html/render/mod.rs
@@ -708,11 +708,15 @@ fn render_impls(
                 containing_item,
                 assoc_link,
                 RenderMode::Normal,
-                true,
                 None,
-                false,
-                true,
                 &[],
+                ImplRenderingParameters {
+                    show_def_docs: true,
+                    is_on_foreign_type: false,
+                    show_default_items: true,
+                    show_non_assoc_items: true,
+                    toggle_open_by_default: true,
+                },
             );
             buffer.into_inner()
         })
@@ -1047,11 +1051,15 @@ fn render_assoc_items(
                 containing_item,
                 AssocItemLink::Anchor(None),
                 render_mode,
-                true,
                 None,
-                false,
-                true,
                 &[],
+                ImplRenderingParameters {
+                    show_def_docs: true,
+                    is_on_foreign_type: false,
+                    show_default_items: true,
+                    show_non_assoc_items: true,
+                    toggle_open_by_default: true,
+                },
             );
         }
     }
@@ -1240,6 +1248,16 @@ fn notable_traits_decl(decl: &clean::FnDecl, cx: &Context<'_>) -> String {
     out.into_inner()
 }
 
+#[derive(Clone, Copy, Debug)]
+struct ImplRenderingParameters {
+    show_def_docs: bool,
+    is_on_foreign_type: bool,
+    show_default_items: bool,
+    /// Whether or not to show methods.
+    show_non_assoc_items: bool,
+    toggle_open_by_default: bool,
+}
+
 fn render_impl(
     w: &mut Buffer,
     cx: &Context<'_>,
@@ -1247,13 +1265,9 @@ fn render_impl(
     parent: &clean::Item,
     link: AssocItemLink<'_>,
     render_mode: RenderMode,
-    show_def_docs: bool,
     use_absolute: Option<bool>,
-    is_on_foreign_type: bool,
-    show_default_items: bool,
-    // This argument is used to reference same type with different paths to avoid duplication
-    // in documentation pages for trait with automatic implementations like "Send" and "Sync".
     aliases: &[String],
+    rendering_params: ImplRenderingParameters,
 ) {
     let cache = cx.cache();
     let traits = &cache.traits;
@@ -1276,17 +1290,18 @@ fn render_impl(
         render_mode: RenderMode,
         is_default_item: bool,
         trait_: Option<&clean::Trait>,
-        show_def_docs: bool,
+        rendering_params: ImplRenderingParameters,
     ) {
         let item_type = item.type_();
         let name = item.name.as_ref().unwrap();
 
-        let render_method_item = match render_mode {
-            RenderMode::Normal => true,
-            RenderMode::ForDeref { mut_: deref_mut_ } => {
-                should_render_item(&item, deref_mut_, &cx.cache)
-            }
-        };
+        let render_method_item = rendering_params.show_non_assoc_items
+            && match render_mode {
+                RenderMode::Normal => true,
+                RenderMode::ForDeref { mut_: deref_mut_ } => {
+                    should_render_item(&item, deref_mut_, &cx.cache)
+                }
+            };
 
         let in_trait_class = if trait_.is_some() { " trait-impl" } else { "" };
 
@@ -1309,18 +1324,32 @@ fn render_impl(
                         } else {
                             // In case the item isn't documented,
                             // provide short documentation from the trait.
-                            document_short(&mut doc_buffer, it, cx, link, parent, show_def_docs);
+                            document_short(
+                                &mut doc_buffer,
+                                it,
+                                cx,
+                                link,
+                                parent,
+                                rendering_params.show_def_docs,
+                            );
                         }
                     }
                 } else {
                     document_item_info(&mut info_buffer, cx, item, Some(parent));
-                    if show_def_docs {
+                    if rendering_params.show_def_docs {
                         document_full(&mut doc_buffer, item, cx);
                         short_documented = false;
                     }
                 }
             } else {
-                document_short(&mut doc_buffer, item, cx, link, parent, show_def_docs);
+                document_short(
+                    &mut doc_buffer,
+                    item,
+                    cx,
+                    link,
+                    parent,
+                    rendering_params.show_def_docs,
+                );
             }
         }
         let w = if short_documented && trait_.is_some() { interesting } else { boring };
@@ -1452,7 +1481,7 @@ fn render_impl(
             render_mode,
             false,
             trait_.map(|t| &t.trait_),
-            show_def_docs,
+            rendering_params,
         );
     }
 
@@ -1465,7 +1494,7 @@ fn render_impl(
         parent: &clean::Item,
         containing_item: &clean::Item,
         render_mode: RenderMode,
-        show_def_docs: bool,
+        rendering_params: ImplRenderingParameters,
     ) {
         for trait_item in &t.items {
             let n = trait_item.name;
@@ -1487,7 +1516,7 @@ fn render_impl(
                 render_mode,
                 true,
                 Some(t),
-                show_def_docs,
+                rendering_params,
             );
         }
     }
@@ -1496,7 +1525,7 @@ fn render_impl(
     // default items which weren't overridden in the implementation block.
     // We don't emit documentation for default items if they appear in the
     // Implementations on Foreign Types or Implementors sections.
-    if show_default_items {
+    if rendering_params.show_default_items {
         if let Some(t) = trait_ {
             render_default_items(
                 &mut default_impl_items,
@@ -1507,7 +1536,7 @@ fn render_impl(
                 &i.impl_item,
                 parent,
                 render_mode,
-                show_def_docs,
+                rendering_params,
             );
         }
     }
@@ -1515,7 +1544,11 @@ fn render_impl(
         let toggled = !(impl_items.is_empty() && default_impl_items.is_empty());
         if toggled {
             close_tags.insert_str(0, "</details>");
-            write!(w, "<details class=\"rustdoc-toggle implementors-toggle\" open>");
+            write!(
+                w,
+                "<details class=\"rustdoc-toggle implementors-toggle\"{}>",
+                if rendering_params.toggle_open_by_default { " open" } else { "" }
+            );
             write!(w, "<summary>")
         }
         render_impl_summary(
@@ -1524,9 +1557,9 @@ fn render_impl(
             i,
             parent,
             parent,
-            show_def_docs,
+            rendering_params.show_def_docs,
             use_absolute,
-            is_on_foreign_type,
+            rendering_params.is_on_foreign_type,
             aliases,
         );
         if toggled {
diff --git a/src/librustdoc/html/render/print_item.rs b/src/librustdoc/html/render/print_item.rs
index 2290f51aa80..b12e56bfe9b 100644
--- a/src/librustdoc/html/render/print_item.rs
+++ b/src/librustdoc/html/render/print_item.rs
@@ -16,8 +16,8 @@ use rustc_span::symbol::{kw, sym, Symbol};
 use super::{
     collect_paths_for_type, document, ensure_trailing_slash, item_ty_to_strs, notable_traits_decl,
     render_assoc_item, render_assoc_items, render_attributes_in_code, render_attributes_in_pre,
-    render_impl, render_impl_summary, render_stability_since_raw, write_srclink, AssocItemLink,
-    Context,
+    render_impl, render_stability_since_raw, write_srclink, AssocItemLink, Context,
+    ImplRenderingParameters,
 };
 use crate::clean::{self, GetDefId};
 use crate::formats::item_type::ItemType;
@@ -735,11 +735,15 @@ fn item_trait(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, t: &clean::Tra
                     it,
                     assoc_link,
                     RenderMode::Normal,
-                    false,
                     None,
-                    true,
-                    false,
                     &[],
+                    ImplRenderingParameters {
+                        show_def_docs: false,
+                        is_on_foreign_type: true,
+                        show_default_items: false,
+                        show_non_assoc_items: true,
+                        toggle_open_by_default: false,
+                    },
                 );
             }
         }
@@ -1361,16 +1365,22 @@ fn render_implementor(
         } => implementor_dups[&path.last()].1,
         _ => false,
     };
-    render_impl_summary(
+    render_impl(
         w,
         cx,
         implementor,
         trait_,
-        trait_,
-        false,
+        AssocItemLink::Anchor(None),
+        RenderMode::Normal,
         Some(use_absolute),
-        false,
         aliases,
+        ImplRenderingParameters {
+            show_def_docs: false,
+            is_on_foreign_type: false,
+            show_default_items: false,
+            show_non_assoc_items: false,
+            toggle_open_by_default: false,
+        },
     );
 }
 
diff --git a/src/test/rustdoc-gui/implementors.goml b/src/test/rustdoc-gui/implementors.goml
index 87e4f2a7bd1..c9042eb4813 100644
--- a/src/test/rustdoc-gui/implementors.goml
+++ b/src/test/rustdoc-gui/implementors.goml
@@ -3,14 +3,14 @@
 goto: file://|DOC_PATH|/implementors/trait.Whatever.html
 assert: "#implementors-list"
 // There are supposed to be two implementors listed.
-assert-count: ("#implementors-list > .impl", 2)
+assert-count: ("#implementors-list .impl", 2)
 // Now we check that both implementors have an anchor, an ID and a similar DOM.
-assert: ("#implementors-list > .impl:nth-child(1) > a.anchor")
-assert-attribute: ("#implementors-list > .impl:nth-child(1)", {"id": "impl-Whatever"})
-assert-attribute: ("#implementors-list > .impl:nth-child(1) > a.anchor", {"href": "#impl-Whatever"})
-assert: "#implementors-list > .impl:nth-child(1) > .code-header.in-band"
+assert: ("#implementors-list .impl:nth-child(1) > a.anchor")
+assert-attribute: ("#implementors-list .impl:nth-child(1)", {"id": "impl-Whatever"})
+assert-attribute: ("#implementors-list .impl:nth-child(1) > a.anchor", {"href": "#impl-Whatever"})
+assert: "#implementors-list .impl:nth-child(1) > .code-header.in-band"
 
-assert: ("#implementors-list > .impl:nth-child(2) > a.anchor")
-assert-attribute: ("#implementors-list > .impl:nth-child(2)", {"id": "impl-Whatever-1"})
-assert-attribute: ("#implementors-list > .impl:nth-child(2) > a.anchor", {"href": "#impl-Whatever-1"})
-assert: "#implementors-list > .impl:nth-child(2) > .code-header.in-band"
+assert: ("#implementors-list .impl:nth-child(2) > a.anchor")
+assert-attribute: ("#implementors-list .impl:nth-child(2)", {"id": "impl-Whatever-1"})
+assert-attribute: ("#implementors-list .impl:nth-child(2) > a.anchor", {"href": "#impl-Whatever-1"})
+assert: "#implementors-list .impl:nth-child(2) > .code-header.in-band"
diff --git a/src/test/rustdoc-gui/src/lib2/implementors/lib.rs b/src/test/rustdoc-gui/src/lib2/implementors/lib.rs
index 4b2f6962e30..6417a6ac5af 100644
--- a/src/test/rustdoc-gui/src/lib2/implementors/lib.rs
+++ b/src/test/rustdoc-gui/src/lib2/implementors/lib.rs
@@ -1,7 +1,11 @@
 pub trait Whatever {
+    type Foo;
+
     fn method() {}
 }
 
 pub struct Struct;
 
-impl Whatever for Struct {}
+impl Whatever for Struct {
+    type Foo = u8;
+}
diff --git a/src/test/rustdoc-gui/src/lib2/lib.rs b/src/test/rustdoc-gui/src/lib2/lib.rs
index 36373d24971..cb63a9f6002 100644
--- a/src/test/rustdoc-gui/src/lib2/lib.rs
+++ b/src/test/rustdoc-gui/src/lib2/lib.rs
@@ -38,7 +38,9 @@ impl Trait for Foo {
 }
 
 
-impl implementors::Whatever for Foo {}
+impl implementors::Whatever for Foo {
+    type Foo = u32;
+}
 
 pub mod sub_mod {
     /// ```txt
diff --git a/src/test/rustdoc-gui/toggle-implementors.goml b/src/test/rustdoc-gui/toggle-implementors.goml
new file mode 100644
index 00000000000..15521ff0f49
--- /dev/null
+++ b/src/test/rustdoc-gui/toggle-implementors.goml
@@ -0,0 +1,4 @@
+// This test ensures that the implementors toggle are not open by default.
+goto: file://|DOC_PATH|/implementors/trait.Whatever.html
+
+assert-attribute-false: ("#implementors-list > details", {"open": ""}, ALL)
diff --git a/src/test/rustdoc/trait-impl-items-links-and-anchors.rs b/src/test/rustdoc/trait-impl-items-links-and-anchors.rs
index ddbe93febdc..4d25835bf08 100644
--- a/src/test/rustdoc/trait-impl-items-links-and-anchors.rs
+++ b/src/test/rustdoc/trait-impl-items-links-and-anchors.rs
@@ -1,6 +1,6 @@
 pub trait MyTrait {
     type Assoc;
-    const VALUE: u32;
+    const VALUE: u32 = 12;
     fn trait_function(&self);
     fn defaulted(&self) {}
     fn defaulted_override(&self) {}
@@ -38,9 +38,11 @@ impl MyTrait for Vec<u8> {
 }
 
 impl MyTrait for MyStruct {
+    // @has trait_impl_items_links_and_anchors/trait.MyTrait.html '//div[@id="associatedtype.Assoc-3"]//a[@class="anchor"]/@href' #associatedtype.Assoc-3
     // @has trait_impl_items_links_and_anchors/struct.MyStruct.html '//div[@id="associatedtype.Assoc"]//a[@class="type"]/@href' trait.MyTrait.html#associatedtype.Assoc
     // @has trait_impl_items_links_and_anchors/struct.MyStruct.html '//div[@id="associatedtype.Assoc"]//a[@class="anchor"]/@href' #associatedtype.Assoc
     type Assoc = bool;
+    // @has trait_impl_items_links_and_anchors/trait.MyTrait.html '//div[@id="associatedconstant.VALUE-3"]//a[@class="anchor"]/@href' #associatedconstant.VALUE-3
     // @has trait_impl_items_links_and_anchors/struct.MyStruct.html '//div[@id="associatedconstant.VALUE"]//a[@class="constant"]/@href' trait.MyTrait.html#associatedconstant.VALUE
     // @has trait_impl_items_links_and_anchors/struct.MyStruct.html '//div[@id="associatedconstant.VALUE"]//a[@class="anchor"]/@href' #associatedconstant.VALUE
     const VALUE: u32 = 20;
@@ -55,3 +57,10 @@ impl MyTrait for MyStruct {
 }
 
 pub struct MyStruct;
+
+// We check that associated items with default values aren't generated in the implementors list.
+impl MyTrait for (u8, u8) {
+    // @!has trait_impl_items_links_and_anchors/trait.MyTrait.html '//div[@id="associatedconstant.VALUE-4"]'
+    type Assoc = bool;
+    fn trait_function(&self) {}
+}
diff --git a/src/test/ui/abi/unsupported.aarch64.stderr b/src/test/ui/abi/unsupported.aarch64.stderr
index 89017453759..fdeb79f93e9 100644
--- a/src/test/ui/abi/unsupported.aarch64.stderr
+++ b/src/test/ui/abi/unsupported.aarch64.stderr
@@ -42,7 +42,7 @@ LL | extern "stdcall" fn stdcall() {}
    |
    = note: `#[warn(unsupported_calling_conventions)]` on by default
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #00000 <https://github.com/rust-lang/rust/issues/00000>
+   = note: for more information, see issue #87678 <https://github.com/rust-lang/rust/issues/87678>
 
 warning: use of calling convention not supported on this target
   --> $DIR/unsupported.rs:44:1
@@ -51,7 +51,7 @@ LL | extern "thiscall" fn thiscall() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #00000 <https://github.com/rust-lang/rust/issues/00000>
+   = note: for more information, see issue #87678 <https://github.com/rust-lang/rust/issues/87678>
 
 error: aborting due to 6 previous errors; 2 warnings emitted
 
diff --git a/src/test/ui/abi/unsupported.x64.stderr b/src/test/ui/abi/unsupported.x64.stderr
index 5c68461e4fb..60d067acf17 100644
--- a/src/test/ui/abi/unsupported.x64.stderr
+++ b/src/test/ui/abi/unsupported.x64.stderr
@@ -42,7 +42,7 @@ LL | extern "stdcall" fn stdcall() {}
    |
    = note: `#[warn(unsupported_calling_conventions)]` on by default
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #00000 <https://github.com/rust-lang/rust/issues/00000>
+   = note: for more information, see issue #87678 <https://github.com/rust-lang/rust/issues/87678>
 
 warning: use of calling convention not supported on this target
   --> $DIR/unsupported.rs:44:1
@@ -51,7 +51,7 @@ LL | extern "thiscall" fn thiscall() {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #00000 <https://github.com/rust-lang/rust/issues/00000>
+   = note: for more information, see issue #87678 <https://github.com/rust-lang/rust/issues/87678>
 
 error: aborting due to 6 previous errors; 2 warnings emitted