Auto merge of #123991 - fmease:rollup-96xcgnm, r=fmease

Rollup of 7 pull requests

Successful merges:

 - #123016 (Remove `TypeVariableOriginKind` and `ConstVariableOriginKind`)
 - #123462 (Cleanup: Rename `ModSep` to `PathSep`)
 - #123603 (Don't even parse an intrinsic unless the feature gate is enabled)
 - #123926 (Fix pretty HIR for anon consts in diagnostics)
 - #123973 (crashes: readme: add reminder to add Fixes #abcde to prs to automatically close issues.)
 - #123984 (sanitizers: Add rustc_sanitizers to triagebot.toml)
 - #123989 (Just use `type_dependent_def_id` to figure out what the method is for an expr)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

Cargo.lock

@@ -4278,6 +4278,7 @@ dependencies = [
  "rustc_fluent_macro",
  "rustc_graphviz",
  "rustc_hir",
+ "rustc_hir_pretty",
  "rustc_index",
  "rustc_macros",
  "rustc_query_system",

compiler/rustc_ast/src/attr/mod.rs

@@ -308,11 +308,11 @@ impl MetaItem {
         // FIXME: Share code with `parse_path`.
         let path = match tokens.next().map(|tt| TokenTree::uninterpolate(tt)).as_deref() {
             Some(&TokenTree::Token(
-                Token { kind: ref kind @ (token::Ident(..) | token::ModSep), span },
+                Token { kind: ref kind @ (token::Ident(..) | token::PathSep), span },
                 _,
             )) => 'arm: {
                 let mut segments = if let &token::Ident(name, _) = kind {
-                    if let Some(TokenTree::Token(Token { kind: token::ModSep, .. }, _)) =
+                    if let Some(TokenTree::Token(Token { kind: token::PathSep, .. }, _)) =
                         tokens.peek()
                     {
                         tokens.next();
@@ -331,7 +331,7 @@ impl MetaItem {
                     } else {
                         return None;
                     }
-                    if let Some(TokenTree::Token(Token { kind: token::ModSep, .. }, _)) =
+                    if let Some(TokenTree::Token(Token { kind: token::PathSep, .. }, _)) =
                         tokens.peek()
                     {
                         tokens.next();

compiler/rustc_ast/src/token.rs

@@ -290,7 +290,7 @@ pub enum TokenKind {
     /// `:`
     Colon,
     /// `::`
-    ModSep,
+    PathSep,
     /// `->`
     RArrow,
     /// `<-`
@@ -393,7 +393,7 @@ impl TokenKind {
             BinOpEq(Shr) => (Gt, Ge),
             DotDot => (Dot, Dot),
             DotDotDot => (Dot, DotDot),
-            ModSep => (Colon, Colon),
+            PathSep => (Colon, Colon),
             RArrow => (BinOp(Minus), Gt),
             LArrow => (Lt, BinOp(Minus)),
             FatArrow => (Eq, Gt),
@@ -454,7 +454,9 @@ impl Token {
         match self.kind {
             Eq | Lt | Le | EqEq | Ne | Ge | Gt | AndAnd | OrOr | Not | Tilde | BinOp(_)
             | BinOpEq(_) | At | Dot | DotDot | DotDotDot | DotDotEq | Comma | Semi | Colon
-            | ModSep | RArrow | LArrow | FatArrow | Pound | Dollar | Question | SingleQuote => true,
+            | PathSep | RArrow | LArrow | FatArrow | Pound | Dollar | Question | SingleQuote => {
+                true
+            }
 
             OpenDelim(..) | CloseDelim(..) | Literal(..) | DocComment(..) | Ident(..)
             | Lifetime(..) | Interpolated(..) | Eof => false,
@@ -481,7 +483,7 @@ impl Token {
             // DotDotDot is no longer supported, but we need some way to display the error
             DotDot | DotDotDot | DotDotEq     | // range notation
             Lt | BinOp(Shl)                   | // associated path
-            ModSep                            | // global path
+            PathSep                            | // global path
             Lifetime(..)                      | // labeled loop
             Pound                             => true, // expression attributes
             Interpolated(ref nt) => matches!(&nt.0, NtLiteral(..) |
@@ -507,7 +509,7 @@ impl Token {
             // DotDotDot is no longer supported
             | DotDot | DotDotDot | DotDotEq      // ranges
             | Lt | BinOp(Shl)                    // associated path
-            | ModSep                    => true, // global path
+            | PathSep                    => true, // global path
             Interpolated(ref nt) => matches!(&nt.0, NtLiteral(..) |
                 NtPat(..)     |
                 NtBlock(..)   |
@@ -530,7 +532,7 @@ impl Token {
             Question                    | // maybe bound in trait object
             Lifetime(..)                | // lifetime bound in trait object
             Lt | BinOp(Shl)             | // associated path
-            ModSep                      => true, // global path
+            PathSep                      => true, // global path
             Interpolated(ref nt) => matches!(&nt.0, NtTy(..) | NtPath(..)),
             // For anonymous structs or unions, which only appear in specific positions
             // (type of struct fields or union fields), we don't consider them as regular types
@@ -708,7 +710,7 @@ impl Token {
     }
 
     pub fn is_path_start(&self) -> bool {
-        self == &ModSep
+        self == &PathSep
             || self.is_qpath_start()
             || self.is_whole_path()
             || self.is_path_segment_keyword()
@@ -821,7 +823,7 @@ impl Token {
                 _ => return None,
             },
             Colon => match joint.kind {
-                Colon => ModSep,
+                Colon => PathSep,
                 _ => return None,
             },
             SingleQuote => match joint.kind {
@@ -830,7 +832,7 @@ impl Token {
             },
 
             Le | EqEq | Ne | Ge | AndAnd | OrOr | Tilde | BinOpEq(..) | At | DotDotDot
-            | DotDotEq | Comma | Semi | ModSep | RArrow | LArrow | FatArrow | Pound | Dollar
+            | DotDotEq | Comma | Semi | PathSep | RArrow | LArrow | FatArrow | Pound | Dollar
             | Question | OpenDelim(..) | CloseDelim(..) | Literal(..) | Ident(..)
             | Lifetime(..) | Interpolated(..) | DocComment(..) | Eof => return None,
         };

compiler/rustc_ast_pretty/src/pprust/state.rs

@@ -893,7 +893,7 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
             token::Comma => ",".into(),
             token::Semi => ";".into(),
             token::Colon => ":".into(),
-            token::ModSep => "::".into(),
+            token::PathSep => "::".into(),
             token::RArrow => "->".into(),
             token::LArrow => "<-".into(),
             token::FatArrow => "=>".into(),

compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs

@@ -1752,32 +1752,31 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
         let tcx = self.infcx.tcx;
         let hir = tcx.hir();
         let Some(body_id) = tcx.hir_node(self.mir_hir_id()).body_id() else { return };
-        struct FindUselessClone<'hir> {
-            tcx: TyCtxt<'hir>,
-            def_id: DefId,
-            pub clones: Vec<&'hir hir::Expr<'hir>>,
+
+        struct FindUselessClone<'tcx> {
+            tcx: TyCtxt<'tcx>,
+            typeck_results: &'tcx ty::TypeckResults<'tcx>,
+            pub clones: Vec<&'tcx hir::Expr<'tcx>>,
         }
-        impl<'hir> FindUselessClone<'hir> {
-            pub fn new(tcx: TyCtxt<'hir>, def_id: DefId) -> Self {
-                Self { tcx, def_id, clones: vec![] }
+        impl<'tcx> FindUselessClone<'tcx> {
+            pub fn new(tcx: TyCtxt<'tcx>, def_id: LocalDefId) -> Self {
+                Self { tcx, typeck_results: tcx.typeck(def_id), clones: vec![] }
             }
         }
-
-        impl<'v> Visitor<'v> for FindUselessClone<'v> {
-            fn visit_expr(&mut self, ex: &'v hir::Expr<'v>) {
-                if let hir::ExprKind::MethodCall(segment, _rcvr, args, _span) = ex.kind
-                    && segment.ident.name == sym::clone
-                    && args.len() == 0
-                    && let Some(def_id) = self.def_id.as_local()
-                    && let Some(method) = self.tcx.lookup_method_for_diagnostic((def_id, ex.hir_id))
-                    && Some(self.tcx.parent(method)) == self.tcx.lang_items().clone_trait()
+        impl<'tcx> Visitor<'tcx> for FindUselessClone<'tcx> {
+            fn visit_expr(&mut self, ex: &'tcx hir::Expr<'tcx>) {
+                if let hir::ExprKind::MethodCall(..) = ex.kind
+                    && let Some(method_def_id) =
+                        self.typeck_results.type_dependent_def_id(ex.hir_id)
+                    && self.tcx.lang_items().clone_trait() == Some(self.tcx.parent(method_def_id))
                 {
                     self.clones.push(ex);
                 }
                 hir::intravisit::walk_expr(self, ex);
             }
         }
-        let mut expr_finder = FindUselessClone::new(tcx, self.mir_def_id().into());
+
+        let mut expr_finder = FindUselessClone::new(tcx, self.mir_def_id());
 
         let body = hir.body(body_id).value;
         expr_finder.visit_expr(body);

compiler/rustc_borrowck/src/diagnostics/region_errors.rs

@@ -26,7 +26,7 @@ use rustc_middle::ty::{self, RegionVid, Ty};
 use rustc_middle::ty::{Region, TyCtxt};
 use rustc_span::symbol::{kw, Ident};
 use rustc_span::Span;
-use rustc_trait_selection::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
+use rustc_trait_selection::infer::type_variable::TypeVariableOrigin;
 use rustc_trait_selection::infer::InferCtxtExt;
 use rustc_trait_selection::traits::{Obligation, ObligationCtxt};
 
@@ -1104,10 +1104,9 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
         );
         let closure_kind = args.as_closure().kind();
         let closure_kind_ty = Ty::from_closure_kind(tcx, closure_kind);
-        let tupled_upvars_ty = self.infcx.next_ty_var(TypeVariableOrigin {
-            kind: TypeVariableOriginKind::ClosureSynthetic,
-            span: closure_expr.span,
-        });
+        let tupled_upvars_ty = self
+            .infcx
+            .next_ty_var(TypeVariableOrigin { param_def_id: None, span: closure_expr.span });
         let closure_args = ty::ClosureArgs::new(
             tcx,
             ty::ClosureArgsParts {
@@ -1131,17 +1130,12 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
         };
         // The found `Self` type of the method call.
         let Some(possible_rcvr_ty) = tables.node_type_opt(rcvr.hir_id) else { return };
-
-        // The `MethodCall` expression is `Res::Err`, so we search for the method on the `rcvr_ty`.
-        let Some(method) = tcx.lookup_method_for_diagnostic((self.mir_def_id(), expr.hir_id))
-        else {
-            return;
-        };
+        let Some(method_def_id) = tables.type_dependent_def_id(expr.hir_id) else { return };
 
         // Get the type for the parameter corresponding to the argument the closure with the
         // lifetime error we had.
         let Some(input) = tcx
-            .fn_sig(method)
+            .fn_sig(method_def_id)
             .instantiate_identity()
             .inputs()
             .skip_binder()
@@ -1156,7 +1150,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
         let ty::Param(closure_param) = input.kind() else { return };
 
         // Get the arguments for the found method, only specifying that `Self` is the receiver type.
-        let args = GenericArgs::for_item(tcx, method, |param, _| {
+        let args = GenericArgs::for_item(tcx, method_def_id, |param, _| {
             if param.index == 0 {
                 possible_rcvr_ty.into()
             } else if param.index == closure_param.index {
@@ -1166,7 +1160,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
             }
         });
 
-        let preds = tcx.predicates_of(method).instantiate(tcx, args);
+        let preds = tcx.predicates_of(method_def_id).instantiate(tcx, args);
 
         let ocx = ObligationCtxt::new(&self.infcx);
         ocx.register_obligations(preds.iter().map(|(pred, span)| {

compiler/rustc_borrowck/src/type_check/input_output.rs

@@ -11,7 +11,7 @@ use std::assert_matches::assert_matches;
 
 use itertools::Itertools;
 use rustc_hir as hir;
-use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
+use rustc_infer::infer::type_variable::TypeVariableOrigin;
 use rustc_infer::infer::{BoundRegionConversionTime, RegionVariableOrigin};
 use rustc_middle::mir::*;
 use rustc_middle::ty::{self, Ty};
@@ -75,10 +75,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
             );
 
             let next_ty_var = || {
-                self.infcx.next_ty_var(TypeVariableOrigin {
-                    span: body.span,
-                    kind: TypeVariableOriginKind::MiscVariable,
-                })
+                self.infcx.next_ty_var(TypeVariableOrigin { span: body.span, param_def_id: None })
             };
             let output_ty = Ty::new_coroutine(
                 self.tcx(),

compiler/rustc_borrowck/src/type_check/mod.rs

@@ -16,7 +16,7 @@ use rustc_index::{IndexSlice, IndexVec};
 use rustc_infer::infer::canonical::QueryRegionConstraints;
 use rustc_infer::infer::outlives::env::RegionBoundPairs;
 use rustc_infer::infer::region_constraints::RegionConstraintData;
-use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
+use rustc_infer::infer::type_variable::TypeVariableOrigin;
 use rustc_infer::infer::{
     BoundRegion, BoundRegionConversionTime, InferCtxt, NllRegionVariableOrigin,
 };
@@ -2425,7 +2425,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
                     ty::RawPtr(_, _) | ty::FnPtr(_) => {
                         let ty_right = right.ty(body, tcx);
                         let common_ty = self.infcx.next_ty_var(TypeVariableOrigin {
-                            kind: TypeVariableOriginKind::MiscVariable,
+                            param_def_id: None,
                             span: body.source_info(location).span,
                         });
                         self.sub_types(

compiler/rustc_borrowck/src/type_check/relate_tys.rs

@@ -1,6 +1,6 @@
 use rustc_data_structures::fx::FxHashMap;
 use rustc_errors::ErrorGuaranteed;
-use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
+use rustc_infer::infer::type_variable::TypeVariableOrigin;
 use rustc_infer::infer::NllRegionVariableOrigin;
 use rustc_infer::infer::{ObligationEmittingRelation, StructurallyRelateAliases};
 use rustc_infer::traits::{Obligation, PredicateObligations};
@@ -129,10 +129,7 @@ impl<'me, 'bccx, 'tcx> NllTypeRelating<'me, 'bccx, 'tcx> {
         // the opaque.
         let mut enable_subtyping = |ty, opaque_is_expected| {
             let ty_vid = infcx.next_ty_var_id_in_universe(
-                TypeVariableOrigin {
-                    kind: TypeVariableOriginKind::MiscVariable,
-                    span: self.span(),
-                },
+                TypeVariableOrigin { param_def_id: None, span: self.span() },
                 ty::UniverseIndex::ROOT,
             );
 

compiler/rustc_driver_impl/src/pretty.rs

@@ -24,20 +24,6 @@ struct AstNoAnn;
 
 impl pprust_ast::PpAnn for AstNoAnn {}
 
-struct HirNoAnn<'tcx> {
-    tcx: TyCtxt<'tcx>,
-}
-
-impl<'tcx> pprust_hir::PpAnn for HirNoAnn<'tcx> {
-    fn nested(&self, state: &mut pprust_hir::State<'_>, nested: pprust_hir::Nested) {
-        pprust_hir::PpAnn::nested(
-            &(&self.tcx.hir() as &dyn hir::intravisit::Map<'_>),
-            state,
-            nested,
-        )
-    }
-}
-
 struct AstIdentifiedAnn;
 
 impl pprust_ast::PpAnn for AstIdentifiedAnn {
@@ -300,10 +286,7 @@ pub fn print<'tcx>(sess: &Session, ppm: PpMode, ex: PrintExtra<'tcx>) {
                 )
             };
             match s {
-                PpHirMode::Normal => {
-                    let annotation = HirNoAnn { tcx };
-                    f(&annotation)
-                }
+                PpHirMode::Normal => f(&tcx),
                 PpHirMode::Identified => {
                     let annotation = HirIdentifiedAnn { tcx };
                     f(&annotation)

compiler/rustc_expand/src/proc_macro_server.rs

@@ -208,7 +208,7 @@ impl FromInternal<(TokenStream, &mut Rustc<'_, '_>)> for Vec<TokenTree<TokenStre
                 Comma => op(","),
                 Semi => op(";"),
                 Colon => op(":"),
-                ModSep => op("::"),
+                PathSep => op("::"),
                 RArrow => op("->"),
                 LArrow => op("<-"),
                 FatArrow => op("=>"),

compiler/rustc_hir_analysis/src/check/compare_impl_item.rs

@@ -9,7 +9,7 @@ use rustc_hir::def::{DefKind, Res};
 use rustc_hir::intravisit;
 use rustc_hir::{GenericParamKind, ImplItemKind};
 use rustc_infer::infer::outlives::env::OutlivesEnvironment;
-use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
+use rustc_infer::infer::type_variable::TypeVariableOrigin;
 use rustc_infer::infer::{self, InferCtxt, TyCtxtInferExt};
 use rustc_infer::traits::{util, FulfillmentError};
 use rustc_middle::ty::error::{ExpectedFound, TypeError};
@@ -800,10 +800,10 @@ impl<'tcx> TypeFolder<TyCtxt<'tcx>> for ImplTraitInTraitCollector<'_, 'tcx> {
                 bug!("FIXME(RPITIT): error here");
             }
             // Replace with infer var
-            let infer_ty = self.ocx.infcx.next_ty_var(TypeVariableOrigin {
-                span: self.span,
-                kind: TypeVariableOriginKind::MiscVariable,
-            });
+            let infer_ty = self
+                .ocx
+                .infcx
+                .next_ty_var(TypeVariableOrigin { span: self.span, param_def_id: None });
             self.types.insert(proj.def_id, (infer_ty, proj.args));
             // Recurse into bounds
             for (pred, pred_span) in self

compiler/rustc_hir_analysis/src/check/errs.rs

@@ -12,7 +12,7 @@ pub fn maybe_expr_static_mut(tcx: TyCtxt<'_>, expr: hir::Expr<'_>) {
     let hir_id = expr.hir_id;
     if let hir::ExprKind::AddrOf(borrow_kind, m, expr) = expr.kind
         && matches!(borrow_kind, hir::BorrowKind::Ref)
-        && let Some(var) = is_path_static_mut(*expr)
+        && let Some(var) = path_if_static_mut(tcx, expr)
     {
         handle_static_mut_ref(tcx, span, var, span.edition().at_least_rust_2024(), m, hir_id);
     }
@@ -24,7 +24,7 @@ pub fn maybe_stmt_static_mut(tcx: TyCtxt<'_>, stmt: hir::Stmt<'_>) {
         && let hir::PatKind::Binding(ba, _, _, _) = loc.pat.kind
         && let hir::ByRef::Yes(rmutbl) = ba.0
         && let Some(init) = loc.init
-        && let Some(var) = is_path_static_mut(*init)
+        && let Some(var) = path_if_static_mut(tcx, init)
     {
         handle_static_mut_ref(
             tcx,
@@ -37,13 +37,13 @@ pub fn maybe_stmt_static_mut(tcx: TyCtxt<'_>, stmt: hir::Stmt<'_>) {
     }
 }
 
-fn is_path_static_mut(expr: hir::Expr<'_>) -> Option<String> {
+fn path_if_static_mut(tcx: TyCtxt<'_>, expr: &hir::Expr<'_>) -> Option<String> {
     if let hir::ExprKind::Path(qpath) = expr.kind
         && let hir::QPath::Resolved(_, path) = qpath
         && let hir::def::Res::Def(def_kind, _) = path.res
         && let hir::def::DefKind::Static { mutability: Mutability::Mut, nested: false } = def_kind
     {
-        return Some(qpath_to_string(&qpath));
+        return Some(qpath_to_string(&tcx, &qpath));
     }
     None
 }