Auto merge of #73369 - RalfJung:rollup-hl8g9zf, r=RalfJung

Rollup of 10 pull requests

Successful merges:

 - #72707 (Use min_specialization in the remaining rustc crates)
 - #72740 (On recursive ADT, provide indirection structured suggestion)
 - #72879 (Miri: avoid tracking current location three times)
 - #72938 (Stabilize Option::zip)
 - #73086 (Rename "cyclone" to "apple-a7" per changes in upstream LLVM)
 - #73104 (Example about explicit mutex dropping)
 - #73139 (Add methods to go from a nul-terminated Vec<u8> to a CString)
 - #73296 (Remove vestigial CI job msvc-aux.)
 - #73304 (Revert heterogeneous SocketAddr PartialEq impls)
 - #73331 (extend network support for HermitCore)

Failed merges:

r? @ghost

.github/workflows/ci.yml

@@ -428,11 +428,6 @@ jobs:
               NO_DEBUG_ASSERTIONS: 1
               NO_LLVM_ASSERTIONS: 1
             os: windows-latest-xl
-          - name: x86_64-msvc-aux
-            env:
-              RUST_CHECK_TARGET: check-aux EXCLUDE_CARGO=1
-              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-msvc"
-            os: windows-latest-xl
           - name: x86_64-msvc-cargo
             env:
               SCRIPT: python x.py test src/tools/cargotest src/tools/cargo

Cargo.lock

@@ -1434,9 +1434,9 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91780f809e750b0a89f5544be56617ff6b1227ee485bcb06ebe10cdf89bd3b71"
+checksum = "b9586eedd4ce6b3c498bc3b4dd92fc9f11166aa908a914071953768066c67909"
 dependencies = [
  "compiler_builtins",
  "libc",

src/bootstrap/builder.rs

@@ -373,7 +373,6 @@ impl<'a> Builder<'a> {
                 test::UiFullDeps,
                 test::Rustdoc,
                 test::Pretty,
-                test::RunPassValgrindPretty,
                 test::Crate,
                 test::CrateLibrustc,
                 test::CrateRustdoc,

src/bootstrap/mk/Makefile.in

@@ -6,12 +6,6 @@ Q := @
 BOOTSTRAP_ARGS :=
 endif
 
-ifdef EXCLUDE_CARGO
-AUX_ARGS :=
-else
-AUX_ARGS := src/tools/cargo src/tools/cargotest
-endif
-
 BOOTSTRAP := $(CFG_PYTHON) $(CFG_SRC_DIR)src/bootstrap/bootstrap.py
 
 all:
@@ -48,8 +42,8 @@ check:
 	$(Q)$(BOOTSTRAP) test $(BOOTSTRAP_ARGS)
 check-aux:
 	$(Q)$(BOOTSTRAP) test \
-		src/test/run-pass-valgrind/pretty \
-		$(AUX_ARGS) \
+		src/tools/cargo \
+		src/tools/cargotest \
 		$(BOOTSTRAP_ARGS)
 check-bootstrap:
 	$(Q)$(CFG_PYTHON) $(CFG_SRC_DIR)src/bootstrap/bootstrap_test.py

src/bootstrap/test.rs

@@ -930,13 +930,6 @@ host_test!(UiFullDeps { path: "src/test/ui-fulldeps", mode: "ui", suite: "ui-ful
 host_test!(Rustdoc { path: "src/test/rustdoc", mode: "rustdoc", suite: "rustdoc" });
 
 host_test!(Pretty { path: "src/test/pretty", mode: "pretty", suite: "pretty" });
-test!(RunPassValgrindPretty {
-    path: "src/test/run-pass-valgrind/pretty",
-    mode: "pretty",
-    suite: "run-pass-valgrind",
-    default: false,
-    host: true
-});
 
 default_test!(RunMake { path: "src/test/run-make", mode: "run-make", suite: "run-make" });
 

src/ci/azure-pipelines/auto.yml

@@ -142,10 +142,6 @@ jobs:
         # FIXME(#59637)
         NO_DEBUG_ASSERTIONS: 1
         NO_LLVM_ASSERTIONS: 1
-      # MSVC aux tests
-      x86_64-msvc-aux:
-        RUST_CHECK_TARGET: check-aux EXCLUDE_CARGO=1
-        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc
       x86_64-msvc-cargo:
         SCRIPT: python x.py test src/tools/cargotest src/tools/cargo
         INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-lld

src/ci/github-actions/ci.yml

@@ -492,12 +492,6 @@ jobs:
               NO_LLVM_ASSERTIONS: 1
             <<: *job-windows-xl
 
-          - name: x86_64-msvc-aux
-            env:
-              RUST_CHECK_TARGET: check-aux EXCLUDE_CARGO=1
-              RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc
-            <<: *job-windows-xl
-
           - name: x86_64-msvc-cargo
             env:
               SCRIPT: python x.py test src/tools/cargotest src/tools/cargo

src/libcore/lib.rs

@@ -145,7 +145,6 @@
 #![feature(associated_type_bounds)]
 #![feature(const_type_id)]
 #![feature(const_caller_location)]
-#![feature(option_zip)]
 #![feature(no_niche)] // rust-lang/rust#68303
 
 #[prelude_import]

src/libcore/option.rs

@@ -926,17 +926,19 @@ impl<T> Option<T> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(option_zip)]
     /// let x = Some(1);
     /// let y = Some("hi");
     /// let z = None::<u8>;
     ///
     /// assert_eq!(x.zip(y), Some((1, "hi")));
     /// assert_eq!(x.zip(z), None);
     /// ```
-    #[unstable(feature = "option_zip", issue = "70086")]
+    #[stable(feature = "option_zip_option", since = "1.46.0")]
     pub fn zip<U>(self, other: Option<U>) -> Option<(T, U)> {
-        self.zip_with(other, |a, b| (a, b))
+        match (self, other) {
+            (Some(a), Some(b)) => Some((a, b)),
+            _ => None,
+        }
     }
 
     /// Zips `self` and another `Option` with function `f`.

src/librustc_arena/lib.rs

@@ -602,7 +602,7 @@ macro_rules! which_arena_for_type {
 
 #[macro_export]
 macro_rules! declare_arena {
-    ([], [$($a:tt $name:ident: $ty:ty,)*], $tcx:lifetime) => {
+    ([], [$($a:tt $name:ident: $ty:ty, $gen_ty:ty;)*], $tcx:lifetime) => {
         #[derive(Default)]
         pub struct Arena<$tcx> {
             pub dropless: $crate::DroplessArena,
@@ -611,17 +611,17 @@ macro_rules! declare_arena {
         }
 
         #[marker]
-        pub trait ArenaAllocatable {}
+        pub trait ArenaAllocatable<'tcx> {}
 
-        impl<T: Copy> ArenaAllocatable for T {}
+        impl<'tcx, T: Copy> ArenaAllocatable<'tcx> for T {}
 
-        unsafe trait ArenaField<'tcx>: Sized {
+        unsafe trait ArenaField<'tcx>: Sized + ArenaAllocatable<'tcx> {
             /// Returns a specific arena to allocate from.
             /// If `None` is returned, the `DropArena` will be used.
             fn arena<'a>(arena: &'a Arena<'tcx>) -> Option<&'a $crate::TypedArena<Self>>;
         }
 
-        unsafe impl<'tcx, T> ArenaField<'tcx> for T {
+        unsafe impl<'tcx, T: ArenaAllocatable<'tcx>> ArenaField<'tcx> for T {
             #[inline]
             default fn arena<'a>(_: &'a Arena<'tcx>) -> Option<&'a $crate::TypedArena<Self>> {
                 panic!()
@@ -630,18 +630,27 @@ macro_rules! declare_arena {
 
         $(
             #[allow(unused_lifetimes)]
-            impl<$tcx> ArenaAllocatable for $ty {}
-            unsafe impl<$tcx> ArenaField<$tcx> for $ty {
+            impl<$tcx> ArenaAllocatable<$tcx> for $ty {}
+            unsafe impl<$tcx, '_x, '_y, '_z, '_w> ArenaField<$tcx> for $gen_ty where Self: ArenaAllocatable<$tcx> {
                 #[inline]
                 fn arena<'a>(_arena: &'a Arena<$tcx>) -> Option<&'a $crate::TypedArena<Self>> {
-                    $crate::which_arena_for_type!($a[&_arena.$name])
+                    // SAFETY: We only implement `ArenaAllocatable<$tcx>` for
+                    // `$ty`, so `$ty` and Self are the same type
+                    unsafe {
+                        ::std::mem::transmute::<
+                            Option<&'a $crate::TypedArena<$ty>>,
+                            Option<&'a $crate::TypedArena<Self>>,
+                        >(
+                            $crate::which_arena_for_type!($a[&_arena.$name])
+                        )
+                    }
                 }
             }
         )*
 
         impl<'tcx> Arena<'tcx> {
             #[inline]
-            pub fn alloc<T: ArenaAllocatable>(&self, value: T) -> &mut T {
+            pub fn alloc<T: ArenaAllocatable<'tcx>>(&self, value: T) -> &mut T {
                 if !::std::mem::needs_drop::<T>() {
                     return self.dropless.alloc(value);
                 }
@@ -659,7 +668,7 @@ macro_rules! declare_arena {
                 self.dropless.alloc_slice(value)
             }
 
-            pub fn alloc_from_iter<'a, T: ArenaAllocatable>(
+            pub fn alloc_from_iter<'a, T: ArenaAllocatable<'tcx>>(
                 &'a self,
                 iter: impl ::std::iter::IntoIterator<Item = T>,
             ) -> &'a mut [T] {

src/librustc_ast_lowering/lib.rs

@@ -33,7 +33,7 @@
 #![feature(array_value_iter)]
 #![feature(crate_visibility_modifier)]
 #![feature(marker_trait_attr)]
-#![feature(specialization)] // FIXME: min_specialization does not work
+#![feature(min_specialization)]
 #![feature(or_patterns)]
 #![recursion_limit = "256"]
 

src/librustc_errors/diagnostic.rs

@@ -296,6 +296,29 @@ impl Diagnostic {
         self
     }
 
+    pub fn multipart_suggestions(
+        &mut self,
+        msg: &str,
+        suggestions: Vec<Vec<(Span, String)>>,
+        applicability: Applicability,
+    ) -> &mut Self {
+        self.suggestions.push(CodeSuggestion {
+            substitutions: suggestions
+                .into_iter()
+                .map(|suggestion| Substitution {
+                    parts: suggestion
+                        .into_iter()
+                        .map(|(span, snippet)| SubstitutionPart { snippet, span })
+                        .collect(),
+                })
+                .collect(),
+            msg: msg.to_owned(),
+            style: SuggestionStyle::ShowCode,
+            applicability,
+        });
+        self
+    }
+
     /// Prints out a message with for a multipart suggestion without showing the suggested code.
     ///
     /// This is intended to be used for suggestions that are obvious in what the changes need to

src/librustc_errors/diagnostic_builder.rs

@@ -260,6 +260,19 @@ impl<'a> DiagnosticBuilder<'a> {
         self
     }
 
+    pub fn multipart_suggestions(
+        &mut self,
+        msg: &str,
+        suggestions: Vec<Vec<(Span, String)>>,
+        applicability: Applicability,
+    ) -> &mut Self {
+        if !self.0.allow_suggestions {
+            return self;
+        }
+        self.0.diagnostic.multipart_suggestions(msg, suggestions, applicability);
+        self
+    }
+
     pub fn tool_only_multipart_suggestion(
         &mut self,
         msg: &str,

src/librustc_hir/arena.rs

@@ -12,41 +12,41 @@ macro_rules! arena_types {
     ($macro:path, $args:tt, $tcx:lifetime) => (
         $macro!($args, [
             // HIR types
-            [few] hir_krate: rustc_hir::Crate<$tcx>,
-            [] arm: rustc_hir::Arm<$tcx>,
-            [] asm_operand: rustc_hir::InlineAsmOperand<$tcx>,
-            [] asm_template: rustc_ast::ast::InlineAsmTemplatePiece,
-            [] attribute: rustc_ast::ast::Attribute,
-            [] block: rustc_hir::Block<$tcx>,
-            [] bare_fn_ty: rustc_hir::BareFnTy<$tcx>,
-            [few] global_asm: rustc_hir::GlobalAsm,
-            [] generic_arg: rustc_hir::GenericArg<$tcx>,
-            [] generic_args: rustc_hir::GenericArgs<$tcx>,
-            [] generic_bound: rustc_hir::GenericBound<$tcx>,
-            [] generic_param: rustc_hir::GenericParam<$tcx>,
-            [] expr: rustc_hir::Expr<$tcx>,
-            [] field: rustc_hir::Field<$tcx>,
-            [] field_pat: rustc_hir::FieldPat<$tcx>,
-            [] fn_decl: rustc_hir::FnDecl<$tcx>,
-            [] foreign_item: rustc_hir::ForeignItem<$tcx>,
-            [] impl_item_ref: rustc_hir::ImplItemRef<$tcx>,
-            [few] inline_asm: rustc_hir::InlineAsm<$tcx>,
-            [few] llvm_inline_asm: rustc_hir::LlvmInlineAsm<$tcx>,
-            [] local: rustc_hir::Local<$tcx>,
-            [few] macro_def: rustc_hir::MacroDef<$tcx>,
-            [] param: rustc_hir::Param<$tcx>,
-            [] pat: rustc_hir::Pat<$tcx>,
-            [] path: rustc_hir::Path<$tcx>,
-            [] path_segment: rustc_hir::PathSegment<$tcx>,
-            [] poly_trait_ref: rustc_hir::PolyTraitRef<$tcx>,
-            [] qpath: rustc_hir::QPath<$tcx>,
-            [] stmt: rustc_hir::Stmt<$tcx>,
-            [] struct_field: rustc_hir::StructField<$tcx>,
-            [] trait_item_ref: rustc_hir::TraitItemRef,
-            [] ty: rustc_hir::Ty<$tcx>,
-            [] type_binding: rustc_hir::TypeBinding<$tcx>,
-            [] variant: rustc_hir::Variant<$tcx>,
-            [] where_predicate: rustc_hir::WherePredicate<$tcx>,
+            [few] hir_krate: rustc_hir::Crate<$tcx>, rustc_hir::Crate<'_x>;
+            [] arm: rustc_hir::Arm<$tcx>, rustc_hir::Arm<'_x>;
+            [] asm_operand: rustc_hir::InlineAsmOperand<$tcx>, rustc_hir::InlineAsmOperand<'_x>;
+            [] asm_template: rustc_ast::ast::InlineAsmTemplatePiece, rustc_ast::ast::InlineAsmTemplatePiece;
+            [] attribute: rustc_ast::ast::Attribute, rustc_ast::ast::Attribute;
+            [] block: rustc_hir::Block<$tcx>, rustc_hir::Block<'_x>;
+            [] bare_fn_ty: rustc_hir::BareFnTy<$tcx>, rustc_hir::BareFnTy<'_x>;
+            [few] global_asm: rustc_hir::GlobalAsm, rustc_hir::GlobalAsm;
+            [] generic_arg: rustc_hir::GenericArg<$tcx>, rustc_hir::GenericArg<'_x>;
+            [] generic_args: rustc_hir::GenericArgs<$tcx>, rustc_hir::GenericArgs<'_x>;
+            [] generic_bound: rustc_hir::GenericBound<$tcx>, rustc_hir::GenericBound<'_x>;
+            [] generic_param: rustc_hir::GenericParam<$tcx>, rustc_hir::GenericParam<'_x>;
+            [] expr: rustc_hir::Expr<$tcx>, rustc_hir::Expr<'_x>;
+            [] field: rustc_hir::Field<$tcx>, rustc_hir::Field<'_x>;
+            [] field_pat: rustc_hir::FieldPat<$tcx>, rustc_hir::FieldPat<'_x>;
+            [] fn_decl: rustc_hir::FnDecl<$tcx>, rustc_hir::FnDecl<'_x>;
+            [] foreign_item: rustc_hir::ForeignItem<$tcx>, rustc_hir::ForeignItem<'_x>;
+            [] impl_item_ref: rustc_hir::ImplItemRef<$tcx>, rustc_hir::ImplItemRef<'_x>;
+            [few] inline_asm: rustc_hir::InlineAsm<$tcx>, rustc_hir::InlineAsm<'_x>;
+            [few] llvm_inline_asm: rustc_hir::LlvmInlineAsm<$tcx>, rustc_hir::LlvmInlineAsm<'_x>;
+            [] local: rustc_hir::Local<$tcx>, rustc_hir::Local<'_x>;
+            [few] macro_def: rustc_hir::MacroDef<$tcx>, rustc_hir::MacroDef<'_x>;
+            [] param: rustc_hir::Param<$tcx>, rustc_hir::Param<'_x>;
+            [] pat: rustc_hir::Pat<$tcx>, rustc_hir::Pat<'_x>;
+            [] path: rustc_hir::Path<$tcx>, rustc_hir::Path<'_x>;
+            [] path_segment: rustc_hir::PathSegment<$tcx>, rustc_hir::PathSegment<'_x>;
+            [] poly_trait_ref: rustc_hir::PolyTraitRef<$tcx>, rustc_hir::PolyTraitRef<'_x>;
+            [] qpath: rustc_hir::QPath<$tcx>, rustc_hir::QPath<'_x>;
+            [] stmt: rustc_hir::Stmt<$tcx>, rustc_hir::Stmt<'_x>;
+            [] struct_field: rustc_hir::StructField<$tcx>, rustc_hir::StructField<'_x>;
+            [] trait_item_ref: rustc_hir::TraitItemRef, rustc_hir::TraitItemRef;
+            [] ty: rustc_hir::Ty<$tcx>, rustc_hir::Ty<'_x>;
+            [] type_binding: rustc_hir::TypeBinding<$tcx>, rustc_hir::TypeBinding<'_x>;
+            [] variant: rustc_hir::Variant<$tcx>, rustc_hir::Variant<'_x>;
+            [] where_predicate: rustc_hir::WherePredicate<$tcx>, rustc_hir::WherePredicate<'_x>;
         ], $tcx);
     )
 }

src/librustc_infer/infer/canonical/query_response.rs

@@ -56,7 +56,7 @@ impl<'cx, 'tcx> InferCtxt<'cx, 'tcx> {
     ) -> Fallible<CanonicalizedQueryResponse<'tcx, T>>
     where
         T: Debug + TypeFoldable<'tcx>,
-        Canonical<'tcx, QueryResponse<'tcx, T>>: ArenaAllocatable,
+        Canonical<'tcx, QueryResponse<'tcx, T>>: ArenaAllocatable<'tcx>,
     {
         let query_response = self.make_query_response(inference_vars, answer, fulfill_cx)?;
         let canonical_result = self.canonicalize_response(&query_response);

src/librustc_macros/src/query.rs

@@ -433,7 +433,7 @@ pub fn rustc_queries(input: TokenStream) -> TokenStream {
 
                 try_load_from_on_disk_cache_stream.extend(quote! {
                     ::rustc_middle::dep_graph::DepKind::#name => {
-                        if <#arg as DepNodeParams<TyCtxt<'_>>>::CAN_RECONSTRUCT_QUERY_KEY {
+                        if <#arg as DepNodeParams<TyCtxt<'_>>>::can_reconstruct_query_key() {
                             debug_assert!($tcx.dep_graph
                                             .node_color($dep_node)
                                             .map(|c| c.is_green())
@@ -490,7 +490,7 @@ pub fn rustc_queries(input: TokenStream) -> TokenStream {
             // Add a match arm to force the query given the dep node
             dep_node_force_stream.extend(quote! {
                 ::rustc_middle::dep_graph::DepKind::#name => {
-                    if <#arg as DepNodeParams<TyCtxt<'_>>>::CAN_RECONSTRUCT_QUERY_KEY {
+                    if <#arg as DepNodeParams<TyCtxt<'_>>>::can_reconstruct_query_key() {
                         if let Some(key) = <#arg as DepNodeParams<TyCtxt<'_>>>::recover($tcx, $dep_node) {
                             force_query::<crate::ty::query::queries::#name<'_>, _>(
                                 $tcx,

src/librustc_metadata/lib.rs

@@ -7,7 +7,7 @@
 #![feature(nll)]
 #![feature(or_patterns)]
 #![feature(proc_macro_internals)]
-#![feature(specialization)] // FIXME: min_specialization ICEs
+#![feature(min_specialization)]
 #![feature(stmt_expr_attributes)]
 #![recursion_limit = "256"]