Auto merge of #92915 - matthiaskrgr:rollup-pxxk8jp, r=matthiaskrgr

Rollup of 9 pull requests

Successful merges:

 - #92191 (Prefer projection candidates instead of param_env candidates for Sized predicates)
 - #92382 (Extend const_convert to rest of blanket core::convert impls)
 - #92625 (Add `#[track_caller]` to `mirbug`)
 - #92684 (Export `tcp::IntoIncoming`)
 - #92743 (Use pre-interned symbols in a couple of places)
 - #92838 (Clean up some links in RELEASES)
 - #92868 (librustdoc: Address some clippy lints)
 - #92875 (Make `opt_const_param_of` work in the presence of `GenericArg::Infer`)
 - #92891 (Add myself to .mailmap)

Failed merges:

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

Author: bors

.mailmap

@@ -129,6 +129,7 @@ Jakub Adam Wieczorek <jakub.adam.wieczorek@gmail.com> <jakub.bukaj@yahoo.com>
 Jakub Adam Wieczorek <jakub.adam.wieczorek@gmail.com> <jakub@jakub.cc>
 Jakub Adam Wieczorek <jakub.adam.wieczorek@gmail.com> <jakubw@jakubw.net>
 James Deng <cnjamesdeng@gmail.com> <cnJamesDeng@gmail.com>
+James Hinshelwood <jameshinshelwood1@gmail.com> <james.hinshelwood@bigpayme.com>
 James Miller <bladeon@gmail.com> <james@aatch.net>
 James Perry <james.austin.perry@gmail.com>
 Jason Fager <jfager@gmail.com>

RELEASES.md

@@ -11,7 +11,7 @@ use rustc_hir::def::Res;
 use rustc_hir::definitions::DefPathData;
 use rustc_span::hygiene::ExpnId;
 use rustc_span::source_map::{respan, DesugaringKind, Span, Spanned};
-use rustc_span::symbol::{sym, Ident, Symbol};
+use rustc_span::symbol::{sym, Ident};
 use rustc_span::DUMMY_SP;
 
 impl<'hir> LoweringContext<'_, 'hir> {
@@ -1204,11 +1204,13 @@ impl<'hir> LoweringContext<'_, 'hir> {
         };
 
         let fields = self.arena.alloc_from_iter(
-            e1.iter().map(|e| ("start", e)).chain(e2.iter().map(|e| ("end", e))).map(|(s, e)| {
-                let expr = self.lower_expr(&e);
-                let ident = Ident::new(Symbol::intern(s), self.lower_span(e.span));
-                self.expr_field(ident, expr, e.span)
-            }),
+            e1.iter().map(|e| (sym::start, e)).chain(e2.iter().map(|e| (sym::end, e))).map(
+                |(s, e)| {
+                    let expr = self.lower_expr(&e);
+                    let ident = Ident::new(s, self.lower_span(e.span));
+                    self.expr_field(ident, expr, e.span)
+                },
+            ),
         );
 
         hir::ExprKind::Struct(

compiler/rustc_ast_lowering/src/expr.rs

@@ -312,6 +312,7 @@ fn translate_outlives_facts(typeck: &mut TypeChecker<'_, '_>) {
     }
 }
 
+#[track_caller]
 fn mirbug(tcx: TyCtxt<'_>, span: Span, msg: &str) {
     // We sometimes see MIR failures (notably predicate failures) due to
     // the fact that we check rvalue sized predicates here. So use `delay_span_bug`

compiler/rustc_borrowck/src/type_check/mod.rs

@@ -293,10 +293,6 @@ impl GenericArg<'_> {
         }
     }
 
-    pub fn is_const(&self) -> bool {
-        matches!(self, GenericArg::Const(_))
-    }
-
     pub fn is_synthetic(&self) -> bool {
         matches!(self, GenericArg::Lifetime(lifetime) if lifetime.name.ident() == Ident::empty())
     }
@@ -318,6 +314,13 @@ impl GenericArg<'_> {
             GenericArg::Infer(_) => ast::ParamKindOrd::Infer,
         }
     }
+
+    pub fn is_ty_or_const(&self) -> bool {
+        match self {
+            GenericArg::Lifetime(_) => false,
+            GenericArg::Type(_) | GenericArg::Const(_) | GenericArg::Infer(_) => true,
+        }
+    }
 }
 
 #[derive(Debug, HashStable_Generic)]

compiler/rustc_hir/src/hir.rs

@@ -12,7 +12,7 @@ use rustc_middle::ty::print::Print;
 use rustc_middle::ty::subst::{GenericArg, GenericArgKind};
 use rustc_middle::ty::{self, Const, DefIdTree, InferConst, Ty, TyCtxt, TypeFoldable, TypeFolder};
 use rustc_span::symbol::kw;
-use rustc_span::Span;
+use rustc_span::{sym, Span};
 use std::borrow::Cow;
 
 struct FindHirNodeVisitor<'a, 'tcx> {
@@ -1003,9 +1003,9 @@ impl<'tcx> TypeFolder<'tcx> for ResolvedTypeParamEraser<'tcx> {
             | ty::Opaque(..)
             | ty::Projection(_)
             | ty::Never => t.super_fold_with(self),
-            ty::Array(ty, c) => self
-                .tcx()
-                .mk_ty(ty::Array(self.fold_ty(ty), self.replace_infers(c, 0, Symbol::intern("N")))),
+            ty::Array(ty, c) => {
+                self.tcx().mk_ty(ty::Array(self.fold_ty(ty), self.replace_infers(c, 0, sym::N)))
+            }
             // We don't want to hide type params that haven't been resolved yet.
             // This would be the type that will be written out with the type param
             // name in the output.

compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs

@@ -152,7 +152,7 @@ impl<'tcx> Elaborator<'tcx> {
                         obligation.cause.clone(),
                     )
                 });
-                debug!("super_predicates: data={:?}", data);
+                debug!(?data, ?obligations, "super_predicates");
 
                 // Only keep those bounds that we haven't already seen.
                 // This is necessary to prevent infinite recursion in some

compiler/rustc_infer/src/traits/util.rs

@@ -31,6 +31,13 @@ impl GenericParamDefKind {
             GenericParamDefKind::Const { .. } => ast::ParamKindOrd::Const,
         }
     }
+
+    pub fn is_ty_or_const(&self) -> bool {
+        match self {
+            GenericParamDefKind::Lifetime => false,
+            GenericParamDefKind::Type { .. } | GenericParamDefKind::Const { .. } => true,
+        }
+    }
 }
 
 #[derive(Clone, Debug, TyEncodable, TyDecodable, HashStable)]

compiler/rustc_middle/src/ty/generics.rs

@@ -188,6 +188,11 @@ pub trait Printer<'tcx>: Sized {
             own_params.start = 1;
         }
 
+        // If we're in verbose mode, then print default-equal args too
+        if self.tcx().sess.verbose() {
+            return &substs[own_params];
+        }
+
         // Don't print args that are the defaults of their respective parameters.
         own_params.end -= generics
             .params

compiler/rustc_middle/src/ty/print/mod.rs

@@ -1784,10 +1784,11 @@ impl<'tcx, F: fmt::Write> Printer<'tcx> for FmtPrinter<'_, 'tcx, F> {
         self = print_prefix(self)?;
 
         // Don't print `'_` if there's no unerased regions.
-        let print_regions = args.iter().any(|arg| match arg.unpack() {
-            GenericArgKind::Lifetime(r) => *r != ty::ReErased,
-            _ => false,
-        });
+        let print_regions = self.tcx.sess.verbose()
+            || args.iter().any(|arg| match arg.unpack() {
+                GenericArgKind::Lifetime(r) => *r != ty::ReErased,
+                _ => false,
+            });
         let args = args.iter().cloned().filter(|arg| match arg.unpack() {
             GenericArgKind::Lifetime(_) => print_regions,
             _ => true,