rust-lang · matthiaskrgr · Sep 19, 2023 · Sep 26, 2023 · Oct 14, 2023 · Oct 15, 2023
diff --git a/compiler/rustc_ast/src/lib.rs b/compiler/rustc_ast/src/lib.rs
@@ -53,7 +53,6 @@ pub mod visit;
 
 pub use self::ast::*;
 pub use self::ast_traits::{AstDeref, AstNodeWrapper, HasAttrs, HasNodeId, HasSpan, HasTokens};
-pub use self::format::*;
 
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 

diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs b/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
@@ -50,7 +50,6 @@ mod utils;
 
 pub use self::create_scope_map::compute_mir_scopes;
 pub use self::metadata::build_global_var_di_node;
-pub use self::metadata::extend_scope_to_file;
 
 #[allow(non_upper_case_globals)]
 const DW_TAG_auto_variable: c_uint = 0x100;

diff --git a/compiler/rustc_codegen_llvm/src/mono_item.rs b/compiler/rustc_codegen_llvm/src/mono_item.rs
@@ -6,7 +6,6 @@ use crate::llvm;
 use crate::type_of::LayoutLlvmExt;
 use rustc_codegen_ssa::traits::*;
 use rustc_hir::def_id::{DefId, LOCAL_CRATE};
-pub use rustc_middle::mir::mono::MonoItem;
 use rustc_middle::mir::mono::{Linkage, Visibility};
 use rustc_middle::ty::layout::{FnAbiOf, LayoutOf};
 use rustc_middle::ty::{self, Instance, TypeVisitableExt};

diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/mod.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/mod.rs
@@ -4,9 +4,7 @@ mod arg_matrix;
 mod checks;
 mod suggestions;
 
-pub use _impl::*;
 use rustc_errors::ErrorGuaranteed;
-pub use suggestions::*;
 
 use crate::coercion::DynamicCoerceMany;
 use crate::{Diverges, EnclosingBreakables, Inherited};

diff --git a/compiler/rustc_infer/src/traits/mod.rs b/compiler/rustc_infer/src/traits/mod.rs
@@ -19,7 +19,6 @@ use rustc_span::Span;
 
 pub use self::FulfillmentErrorCode::*;
 pub use self::ImplSource::*;
-pub use self::ObligationCauseCode::*;
 pub use self::SelectionError::*;
 
 pub use self::engine::{TraitEngine, TraitEngineExt};

diff --git a/compiler/rustc_middle/src/mir/terminator.rs b/compiler/rustc_middle/src/mir/terminator.rs
@@ -3,12 +3,10 @@ use rustc_hir::LangItem;
 use smallvec::SmallVec;
 
 use super::{BasicBlock, InlineAsmOperand, Operand, SourceInfo, TerminatorKind, UnwindAction};
-pub use rustc_ast::Mutability;
 use rustc_macros::HashStable;
 use std::iter;
 use std::slice;
 
-pub use super::query::*;
 use super::*;
 
 impl SwitchTargets {

diff --git a/compiler/rustc_middle/src/ty/assoc.rs b/compiler/rustc_middle/src/ty/assoc.rs
@@ -1,5 +1,3 @@
-pub use self::AssocItemContainer::*;
-
 use crate::ty;
 use rustc_data_structures::sorted_map::SortedIndexMultiMap;
 use rustc_hir as hir;

diff --git a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs
@@ -198,6 +198,14 @@ impl<'tcx> ConstToPat<'tcx> {
                     // We errored. Signal that in the pattern, so that follow up errors can be silenced.
                     let kind = PatKind::Error(e);
                     return Box::new(Pat { span: self.span, ty: cv.ty(), kind });
+                } else if let ty::Adt(..) = cv.ty().kind() && matches!(cv, mir::Const::Val(..)) {
+                    // This branch is only entered when the current `cv` is `mir::Const::Val`.
+                    // This is because `mir::Const::ty` has already been handled by `Self::recur`
+                    // and the invalid types may be ignored.
+                    let err = TypeNotStructural { span: self.span, non_sm_ty };
+                    let e = self.tcx().sess.emit_err(err);
+                    let kind = PatKind::Error(e);
+                    return Box::new(Pat { span: self.span, ty: cv.ty(), kind });
                 } else if !self.saw_const_match_lint.get() {
                     if let Some(mir_structural_match_violation) = mir_structural_match_violation {
                         match non_sm_ty.kind() {

diff --git a/compiler/rustc_mir_dataflow/src/framework/mod.rs b/compiler/rustc_mir_dataflow/src/framework/mod.rs
@@ -48,7 +48,7 @@ mod visitor;
 pub use self::cursor::{AnalysisResults, ResultsClonedCursor, ResultsCursor, ResultsRefCursor};
 pub use self::direction::{Backward, Direction, Forward};
 pub use self::engine::{Engine, EntrySets, Results, ResultsCloned};
-pub use self::lattice::{JoinSemiLattice, MaybeReachable, MeetSemiLattice};
+pub use self::lattice::{JoinSemiLattice, MaybeReachable};
 pub use self::visitor::{visit_results, ResultsVisitable, ResultsVisitor};
 
 /// Analysis domains are all bitsets of various kinds. This trait holds

diff --git a/compiler/rustc_resolve/src/check_unused.rs b/compiler/rustc_resolve/src/check_unused.rs
@@ -59,7 +59,6 @@ struct UnusedImportCheckVisitor<'a, 'b, 'tcx> {
     base_use_tree: Option<&'a ast::UseTree>,
     base_id: ast::NodeId,
     item_span: Span,
-    base_use_is_pub: bool,
 }
 
 struct ExternCrateToLint {
@@ -146,7 +145,6 @@ impl<'a, 'b, 'tcx> Visitor<'a> for UnusedImportCheckVisitor<'a, 'b, 'tcx> {
             // because this means that they were generated in some fashion by the
             // compiler and we don't need to consider them.
             ast::ItemKind::Use(..) if item.span.is_dummy() => return,
-            ast::ItemKind::Use(..) => self.base_use_is_pub = item.vis.kind.is_pub(),
             ast::ItemKind::ExternCrate(orig_name) => {
                 self.extern_crate_items.push(ExternCrateToLint {
                     id: item.id,
@@ -173,7 +171,7 @@ impl<'a, 'b, 'tcx> Visitor<'a> for UnusedImportCheckVisitor<'a, 'b, 'tcx> {
             self.base_use_tree = Some(use_tree);
         }
 
-        if self.base_use_is_pub {
+        if self.r.effective_visibilities.is_exported(self.r.local_def_id(id)) {
             self.check_import_as_underscore(use_tree, id);
             return;
         }
@@ -332,7 +330,6 @@ impl Resolver<'_, '_> {
             base_use_tree: None,
             base_id: ast::DUMMY_NODE_ID,
             item_span: DUMMY_SP,
-            base_use_is_pub: false,
         };
         visit::walk_crate(&mut visitor, krate);
 

diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
@@ -20,7 +20,6 @@ use std::ops::ControlFlow;
 
 pub use self::infer_ctxt_ext::*;
 pub use self::type_err_ctxt_ext::*;
-pub use rustc_infer::traits::error_reporting::*;
 
 // When outputting impl candidates, prefer showing those that are more similar.
 //

diff --git a/compiler/rustc_trait_selection/src/traits/mod.rs b/compiler/rustc_trait_selection/src/traits/mod.rs
@@ -41,11 +41,6 @@ use std::ops::ControlFlow;
 
 pub(crate) use self::project::{needs_normalization, BoundVarReplacer, PlaceholderReplacer};
 
-pub use self::FulfillmentErrorCode::*;
-pub use self::ImplSource::*;
-pub use self::ObligationCauseCode::*;
-pub use self::SelectionError::*;
-
 pub use self::coherence::{add_placeholder_note, orphan_check, overlapping_impls};
 pub use self::coherence::{OrphanCheckErr, OverlapResult};
 pub use self::engine::{ObligationCtxt, TraitEngineExt};

diff --git a/compiler/rustc_trait_selection/src/traits/util.rs b/compiler/rustc_trait_selection/src/traits/util.rs
@@ -9,7 +9,7 @@ use rustc_middle::ty::{self, ImplSubject, ToPredicate, Ty, TyCtxt, TypeVisitable
 use rustc_span::Span;
 use smallvec::SmallVec;
 
-pub use rustc_infer::traits::{self, util::*};
+pub use rustc_infer::traits::util::*;
 
 ///////////////////////////////////////////////////////////////////////////
 // `TraitAliasExpander` iterator

diff --git a/library/core/src/net/ip_addr.rs b/library/core/src/net/ip_addr.rs
@@ -410,21 +410,24 @@ impl IpAddr {
     /// # Examples
     ///
     /// ```
-    /// #![feature(ip)]
     /// use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
     ///
+    /// let localhost_v4 = Ipv4Addr::new(127, 0, 0, 1);
+    ///
+    /// assert_eq!(IpAddr::V4(localhost_v4).to_canonical(), localhost_v4);
+    /// assert_eq!(IpAddr::V6(localhost_v4.to_ipv6_mapped()).to_canonical(), localhost_v4);
     /// assert_eq!(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)).to_canonical().is_loopback(), true);
     /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0x7f00, 0x1)).is_loopback(), false);
     /// assert_eq!(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0x7f00, 0x1)).to_canonical().is_loopback(), true);
     /// ```
     #[inline]
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
-    #[rustc_const_unstable(feature = "const_ip", issue = "76205")]
-    #[unstable(feature = "ip", issue = "27709")]
+    #[stable(feature = "ip_to_canonical", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "ip_to_canonical", since = "CURRENT_RUSTC_VERSION")]
     pub const fn to_canonical(&self) -> IpAddr {
         match self {
-            &v4 @ IpAddr::V4(_) => v4,
+            IpAddr::V4(_) => *self,
             IpAddr::V6(v6) => v6.to_canonical(),
         }
     }
@@ -1748,11 +1751,11 @@ impl Ipv6Addr {
     ///            Some(Ipv4Addr::new(192, 10, 2, 255)));
     /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1).to_ipv4_mapped(), None);
     /// ```
-    #[rustc_const_unstable(feature = "const_ipv6", issue = "76205")]
-    #[stable(feature = "ipv6_to_ipv4_mapped", since = "1.63.0")]
+    #[inline]
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
-    #[inline]
+    #[stable(feature = "ipv6_to_ipv4_mapped", since = "1.63.0")]
+    #[rustc_const_stable(feature = "const_ipv6_to_ipv4_mapped", since = "CURRENT_RUSTC_VERSION")]
     pub const fn to_ipv4_mapped(&self) -> Option<Ipv4Addr> {
         match self.octets() {
             [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, a, b, c, d] => {
@@ -1817,11 +1820,11 @@ impl Ipv6Addr {
     /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0x7f00, 0x1).is_loopback(), false);
     /// assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0x7f00, 0x1).to_canonical().is_loopback(), true);
     /// ```
-    #[rustc_const_unstable(feature = "const_ipv6", issue = "76205")]
-    #[unstable(feature = "ip", issue = "27709")]
+    #[inline]
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
-    #[inline]
+    #[stable(feature = "ip_to_canonical", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "ip_to_canonical", since = "CURRENT_RUSTC_VERSION")]
     pub const fn to_canonical(&self) -> IpAddr {
         if let Some(mapped) = self.to_ipv4_mapped() {
             return IpAddr::V4(mapped);

diff --git a/library/core/src/ptr/const_ptr.rs b/library/core/src/ptr/const_ptr.rs
@@ -842,7 +842,7 @@ impl<T: ?Sized> *const T {
     where
         T: Sized,
     {
-        match intrinsics::ptr_guaranteed_cmp(self as _, other as _) {
+        match intrinsics::ptr_guaranteed_cmp(self, other) {
             2 => None,
             other => Some(other == 1),
         }

diff --git a/library/core/tests/lib.rs b/library/core/tests/lib.rs
@@ -120,8 +120,6 @@
 #![deny(unsafe_op_in_unsafe_fn)]
 #![deny(fuzzy_provenance_casts)]
 
-extern crate test;
-
 mod alloc;
 mod any;
 mod array;

diff --git a/library/core/tests/num/flt2dec/mod.rs b/library/core/tests/num/flt2dec/mod.rs
@@ -8,8 +8,6 @@ use core::num::flt2dec::{
 };
 use core::num::fmt::{Formatted, Part};
 
-pub use test::Bencher;
-
 mod estimator;
 mod strategy {
     mod dragon;

diff --git a/library/portable-simd/crates/core_simd/src/mod.rs b/library/portable-simd/crates/core_simd/src/mod.rs
@@ -35,6 +35,5 @@ pub mod simd {
     pub use crate::core_simd::masks::*;
     pub use crate::core_simd::ord::*;
     pub use crate::core_simd::swizzle::*;
-    pub use crate::core_simd::swizzle_dyn::*;
     pub use crate::core_simd::vector::*;
 }
diff --git a/library/std/src/sys/common/mod.rs b/library/std/src/sys/common/mod.rs
@@ -12,6 +12,7 @@
 
 pub mod alloc;
 pub mod small_c_string;
+#[allow(unused_imports)]
 pub mod thread_local;
 
 #[cfg(test)]