Rollup of 10 pull requests

.mailmap

@@ -129,7 +129,7 @@ Clement Miao <[email protected]>
 Clément Renault <[email protected]>
 Cliff Dyer <[email protected]>
 Clinton Ryan <[email protected]>
-Corey Richardson <[email protected]> Elaine "See More" Nemo <[email protected]>
+ember arlynx <[email protected]> <[email protected]>
 Crazycolorz5 <[email protected]>
 csmoe <[email protected]>
 Cyryl Płotnicki <[email protected]>

Cargo.lock

@@ -878,12 +878,12 @@ dependencies = [
 
 [[package]]
 name = "ctrlc"
-version = "3.4.0"
+version = "3.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a011bbe2c35ce9c1f143b7af6f94f29a167beb4cd1d29e6740ce836f723120e"
+checksum = "b467862cc8610ca6fc9a1532d7777cee0804e678ab45410897b9396495994a0b"
 dependencies = [
  "nix",
- "windows-sys 0.48.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -2512,14 +2512,13 @@ checksum = "e4a24736216ec316047a1fc4252e27dabb04218aa4a3f37c6e7ddbf1f9782b54"
 
 [[package]]
 name = "nix"
-version = "0.26.2"
+version = "0.27.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfdda3d196821d6af13126e40375cdf7da646a96114af134d5f417a9a1dc8e1a"
+checksum = "2eb04e9c688eff1c89d72b407f168cf79bb9e867a9d3323ed6c01519eb9cc053"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "cfg-if",
  "libc",
- "static_assertions",
 ]
 
 [[package]]
@@ -2641,11 +2640,11 @@ dependencies = [
 
 [[package]]
 name = "openssl"
-version = "0.10.55"
+version = "0.10.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "345df152bc43501c5eb9e4654ff05f794effb78d4efe3d53abc158baddc0703d"
+checksum = "15c9d69dd87a29568d4d017cfe8ec518706046a05184e5aea92d0af890b803c8"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "cfg-if",
  "foreign-types",
  "libc",
@@ -2673,9 +2672,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.90"
+version = "0.9.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "374533b0e45f3a7ced10fcaeccca020e66656bc03dac384f852e4e5a7a8104a6"
+checksum = "22e1bf214306098e4832460f797824c05d25aacdf896f64a985fb0fd992454ae"
 dependencies = [
  "cc",
  "libc",
@@ -6143,6 +6142,15 @@ dependencies = [
  "windows-targets 0.48.1",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.0",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.42.2"
@@ -6173,6 +6181,21 @@ dependencies = [
  "windows_x86_64_msvc 0.48.0",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a18201040b24831fbb9e4eb208f8892e1f50a37feb53cc7ff887feb8f50e7cd"
+dependencies = [
+ "windows_aarch64_gnullvm 0.52.0",
+ "windows_aarch64_msvc 0.52.0",
+ "windows_i686_gnu 0.52.0",
+ "windows_i686_msvc 0.52.0",
+ "windows_x86_64_gnu 0.52.0",
+ "windows_x86_64_gnullvm 0.52.0",
+ "windows_x86_64_msvc 0.52.0",
+]
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.42.2"
@@ -6185,6 +6208,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb7764e35d4db8a7921e09562a0304bf2f93e0a51bfccee0bd0bb0b666b015ea"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.42.2"
@@ -6197,6 +6226,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbaa0368d4f1d2aaefc55b6fcfee13f41544ddf36801e793edbbfd7d7df075ef"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.42.2"
@@ -6209,6 +6244,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a28637cb1fa3560a16915793afb20081aba2c92ee8af57b4d5f28e4b3e7df313"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.42.2"
@@ -6221,6 +6262,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffe5e8e31046ce6230cc7215707b816e339ff4d4d67c65dffa206fd0f7aa7b9a"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.42.2"
@@ -6233,6 +6280,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d6fa32db2bc4a2f5abeacf2b69f7992cd09dca97498da74a151a3132c26befd"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.42.2"
@@ -6245,6 +6298,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a657e1e9d3f514745a572a6846d3c7aa7dbe1658c056ed9c3344c4109a6949e"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.42.2"
@@ -6257,6 +6316,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dff9641d1cd4be8d1a070daf9e3773c5f67e78b4d9d42263020c057706765c04"
+
 [[package]]
 name = "winnow"
 version = "0.4.7"

compiler/rustc_hir_analysis/src/autoderef.rs

@@ -12,7 +12,9 @@ use rustc_trait_selection::traits::StructurallyNormalizeExt;
 
 #[derive(Copy, Clone, Debug)]
 pub enum AutoderefKind {
+    /// A true pointer type, such as `&T` and `*mut T`.
     Builtin,
+    /// A type which must dispatch to a `Deref` implementation.
     Overloaded,
 }
 
@@ -83,6 +85,7 @@ impl<'a, 'tcx> Iterator for Autoderef<'a, 'tcx> {
                 (AutoderefKind::Builtin, ty)
             }
         } else if let Some(ty) = self.overloaded_deref_ty(self.state.cur_ty) {
+            // The overloaded deref check already normalizes the pointee type.
             (AutoderefKind::Overloaded, ty)
         } else {
             return None;

compiler/rustc_hir_analysis/src/check/compare_impl_item.rs

@@ -254,7 +254,7 @@ fn compare_method_predicate_entailment<'tcx>(
     // checks. For the comparison to be valid, we need to
     // normalize the associated types in the impl/trait methods
     // first. However, because function types bind regions, just
-    // calling `normalize_associated_types_in` would have no effect on
+    // calling `FnCtxt::normalize` would have no effect on
     // any associated types appearing in the fn arguments or return
     // type.
 

compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs

@@ -2,7 +2,7 @@ use crate::callee::{self, DeferredCallResolution};
 use crate::errors::CtorIsPrivate;
 use crate::method::{self, MethodCallee, SelfSource};
 use crate::rvalue_scopes;
-use crate::{BreakableCtxt, Diverges, Expectation, FnCtxt, RawTy};
+use crate::{BreakableCtxt, Diverges, Expectation, FnCtxt, LoweredTy};
 use rustc_data_structures::captures::Captures;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::{Applicability, Diagnostic, ErrorGuaranteed, MultiSpan, StashKey};
@@ -373,14 +373,10 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         }
     }
 
-    pub fn handle_raw_ty(&self, span: Span, ty: Ty<'tcx>) -> RawTy<'tcx> {
-        RawTy { raw: ty, normalized: self.normalize(span, ty) }
-    }
-
-    pub fn to_ty(&self, ast_t: &hir::Ty<'tcx>) -> RawTy<'tcx> {
+    pub fn to_ty(&self, ast_t: &hir::Ty<'tcx>) -> LoweredTy<'tcx> {
         let t = self.astconv().ast_ty_to_ty(ast_t);
         self.register_wf_obligation(t.into(), ast_t.span, traits::WellFormed(None));
-        self.handle_raw_ty(ast_t.span, t)
+        LoweredTy::from_raw(self, ast_t.span, t)
     }
 
     pub fn to_ty_saving_user_provided_ty(&self, ast_ty: &hir::Ty<'tcx>) -> Ty<'tcx> {
@@ -396,7 +392,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         ty.normalized
     }
 
-    pub(super) fn user_args_for_adt(ty: RawTy<'tcx>) -> UserArgs<'tcx> {
+    pub(super) fn user_args_for_adt(ty: LoweredTy<'tcx>) -> UserArgs<'tcx> {
         match (ty.raw.kind(), ty.normalized.kind()) {
             (ty::Adt(_, args), _) => UserArgs { args, user_self_ty: None },
             (_, ty::Adt(adt, args)) => UserArgs {
@@ -801,7 +797,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         hir_id: hir::HirId,
         span: Span,
         args: Option<&'tcx [hir::Expr<'tcx>]>,
-    ) -> (Res, Option<RawTy<'tcx>>, &'tcx [hir::PathSegment<'tcx>]) {
+    ) -> (Res, Option<LoweredTy<'tcx>>, &'tcx [hir::PathSegment<'tcx>]) {
         debug!(
             "resolve_ty_and_res_fully_qualified_call: qpath={:?} hir_id={:?} span={:?}",
             qpath, hir_id, span
@@ -825,7 +821,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 // We manually call `register_wf_obligation` in the success path
                 // below.
                 let ty = self.astconv().ast_ty_to_ty_in_path(qself);
-                (self.handle_raw_ty(span, ty), qself, segment)
+                (LoweredTy::from_raw(self, span, ty), qself, segment)
             }
             QPath::LangItem(..) => {
                 bug!("`resolve_ty_and_res_fully_qualified_call` called on `LangItem`")
@@ -1074,7 +1070,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
     pub fn instantiate_value_path(
         &self,
         segments: &'tcx [hir::PathSegment<'tcx>],
-        self_ty: Option<RawTy<'tcx>>,
+        self_ty: Option<LoweredTy<'tcx>>,
         res: Res,
         span: Span,
         hir_id: hir::HirId,
@@ -1201,8 +1197,11 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             path_segs.last().is_some_and(|PathSeg(def_id, _)| tcx.generics_of(*def_id).has_self);
 
         let (res, self_ctor_args) = if let Res::SelfCtor(impl_def_id) = res {
-            let ty =
-                self.handle_raw_ty(span, tcx.at(span).type_of(impl_def_id).instantiate_identity());
+            let ty = LoweredTy::from_raw(
+                self,
+                span,
+                tcx.at(span).type_of(impl_def_id).instantiate_identity(),
+            );
             match ty.normalized.ty_adt_def() {
                 Some(adt_def) if adt_def.has_ctor() => {
                     let (ctor_kind, ctor_def_id) = adt_def.non_enum_variant().ctor.unwrap();

compiler/rustc_hir_typeck/src/fn_ctxt/checks.rs

@@ -6,7 +6,7 @@ use crate::method::MethodCallee;
 use crate::TupleArgumentsFlag::*;
 use crate::{errors, Expectation::*};
 use crate::{
-    struct_span_code_err, BreakableCtxt, Diverges, Expectation, FnCtxt, Needs, RawTy,
+    struct_span_code_err, BreakableCtxt, Diverges, Expectation, FnCtxt, LoweredTy, Needs,
     TupleArgumentsFlag,
 };
 use itertools::Itertools;
@@ -1792,12 +1792,12 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         qpath: &QPath<'tcx>,
         path_span: Span,
         hir_id: hir::HirId,
-    ) -> (Res, RawTy<'tcx>) {
+    ) -> (Res, LoweredTy<'tcx>) {
         match *qpath {
             QPath::Resolved(ref maybe_qself, path) => {
                 let self_ty = maybe_qself.as_ref().map(|qself| self.to_ty(qself).raw);
                 let ty = self.astconv().res_to_ty(self_ty, path, hir_id, true);
-                (path.res, self.handle_raw_ty(path_span, ty))
+                (path.res, LoweredTy::from_raw(self, path_span, ty))
             }
             QPath::TypeRelative(qself, segment) => {
                 let ty = self.to_ty(qself);
@@ -1808,7 +1808,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 let ty = result
                     .map(|(ty, _, _)| ty)
                     .unwrap_or_else(|guar| Ty::new_error(self.tcx(), guar));
-                let ty = self.handle_raw_ty(path_span, ty);
+                let ty = LoweredTy::from_raw(self, path_span, ty);
                 let result = result.map(|(_, kind, def_id)| (kind, def_id));
 
                 // Write back the new resolution.
@@ -1818,7 +1818,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             }
             QPath::LangItem(lang_item, span) => {
                 let (res, ty) = self.resolve_lang_item_path(lang_item, span, hir_id);
-                (res, self.handle_raw_ty(path_span, ty))
+                (res, LoweredTy::from_raw(self, path_span, ty))
             }
         }
     }

compiler/rustc_hir_typeck/src/fn_ctxt/mod.rs

@@ -353,14 +353,22 @@ impl<'a, 'tcx> AstConv<'tcx> for FnCtxt<'a, 'tcx> {
     }
 }
 
-/// Represents a user-provided type in the raw form (never normalized).
+/// The `ty` representation of a user-provided type. Depending on the use-site
+/// we want to either use the unnormalized or the normalized form of this type.
 ///
 /// This is a bridge between the interface of `AstConv`, which outputs a raw `Ty`,
 /// and the API in this module, which expect `Ty` to be fully normalized.
 #[derive(Clone, Copy, Debug)]
-pub struct RawTy<'tcx> {
+pub struct LoweredTy<'tcx> {
+    /// The unnormalized type provided by the user.
     pub raw: Ty<'tcx>,
 
     /// The normalized form of `raw`, stored here for efficiency.
     pub normalized: Ty<'tcx>,
 }
+
+impl<'tcx> LoweredTy<'tcx> {
+    pub fn from_raw(fcx: &FnCtxt<'_, 'tcx>, span: Span, raw: Ty<'tcx>) -> LoweredTy<'tcx> {
+        LoweredTy { raw, normalized: fcx.normalize(span, raw) }
+    }
+}

compiler/rustc_hir_typeck/src/lib.rs

@@ -49,7 +49,7 @@ use crate::check::check_fn;
 use crate::coercion::DynamicCoerceMany;
 use crate::diverges::Diverges;
 use crate::expectation::Expectation;
-use crate::fn_ctxt::RawTy;
+use crate::fn_ctxt::LoweredTy;
 use crate::gather_locals::GatherLocalsVisitor;
 use rustc_data_structures::unord::UnordSet;
 use rustc_errors::{struct_span_code_err, ErrorGuaranteed};

compiler/rustc_hir_typeck/src/method/probe.rs

@@ -746,11 +746,13 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> {
             let (xform_self_ty, xform_ret_ty) = self.xform_self_ty(item, impl_ty, impl_args);
             debug!("xform_self_ty: {:?}, xform_ret_ty: {:?}", xform_self_ty, xform_ret_ty);
 
-            // We can't use normalize_associated_types_in as it will pollute the
+            // We can't use `FnCtxt::normalize` as it will pollute the
             // fcx's fulfillment context after this probe is over.
+            //
             // Note: we only normalize `xform_self_ty` here since the normalization
             // of the return type can lead to inference results that prohibit
             // valid candidates from being found, see issue #85671
+            //
             // FIXME Postponing the normalization of the return type likely only hides a deeper bug,
             // which might be caused by the `param_env` itself. The clauses of the `param_env`
             // maybe shouldn't include `Param`s, but rather fresh variables or be canonicalized,