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-rw-r--r--compiler/rustc_driver_impl/src/args.rs3
-rw-r--r--compiler/rustc_driver_impl/src/lib.rs13
-rw-r--r--compiler/rustc_parse/src/parser/mod.rs4
-rw-r--r--library/alloc/src/string.rs4
-rw-r--r--library/core/src/alloc/global.rs3
-rw-r--r--src/librustdoc/clean/inline.rs4
-rw-r--r--src/librustdoc/clean/utils.rs2
-rw-r--r--src/librustdoc/config.rs1
-rw-r--r--src/librustdoc/formats/cache.rs2
-rw-r--r--src/librustdoc/html/render/print_item.rs112
-rw-r--r--src/librustdoc/html/render/type_layout.rs4
-rw-r--r--src/librustdoc/html/templates/item_union.html8
-rw-r--r--src/librustdoc/lib.rs12
-rw-r--r--src/librustdoc/passes/collect_intra_doc_links.rs4
-rw-r--r--src/librustdoc/passes/collect_trait_impls.rs34
-rw-r--r--src/librustdoc/passes/lint/unescaped_backticks.rs2
-rw-r--r--src/librustdoc/visit_ast.rs13
-rw-r--r--tests/ui/parser/issues/issue-111148.rs2
-rw-r--r--tests/ui/parser/issues/issue-111148.stderr8
19 files changed, 141 insertions, 94 deletions
diff --git a/compiler/rustc_driver_impl/src/args.rs b/compiler/rustc_driver_impl/src/args.rs
index a713affa099..eb92ccc17b2 100644
--- a/compiler/rustc_driver_impl/src/args.rs
+++ b/compiler/rustc_driver_impl/src/args.rs
@@ -18,6 +18,9 @@ fn arg_expand(arg: String) -> Result<Vec<String>, Error> {
     }
 }
 
+/// **Note:** This function doesn't interpret argument 0 in any special way.
+/// If this function is intended to be used with command line arguments,
+/// `argv[0]` must be removed prior to calling it manually.
 pub fn arg_expand_all(at_args: &[String]) -> Vec<String> {
     let mut args = Vec::new();
     for arg in at_args {
diff --git a/compiler/rustc_driver_impl/src/lib.rs b/compiler/rustc_driver_impl/src/lib.rs
index 40aa69e5a41..0b5d737091e 100644
--- a/compiler/rustc_driver_impl/src/lib.rs
+++ b/compiler/rustc_driver_impl/src/lib.rs
@@ -250,6 +250,16 @@ fn run_compiler(
         Box<dyn FnOnce(&config::Options) -> Box<dyn CodegenBackend> + Send>,
     >,
 ) -> interface::Result<()> {
+    // Throw away the first argument, the name of the binary.
+    // In case of at_args being empty, as might be the case by
+    // passing empty argument array to execve under some platforms,
+    // just use an empty slice.
+    //
+    // This situation was possible before due to arg_expand_all being
+    // called before removing the argument, enabling a crash by calling
+    // the compiler with @empty_file as argv[0] and no more arguments.
+    let at_args = at_args.get(1..).unwrap_or_default();
+
     let args = args::arg_expand_all(at_args);
 
     let Some(matches) = handle_options(&args) else { return Ok(()) };
@@ -1074,9 +1084,6 @@ fn print_flag_list<T>(
 /// So with all that in mind, the comments below have some more detail about the
 /// contortions done here to get things to work out correctly.
 pub fn handle_options(args: &[String]) -> Option<getopts::Matches> {
-    // Throw away the first argument, the name of the binary
-    let args = &args[1..];
-
     if args.is_empty() {
         // user did not write `-v` nor `-Z unstable-options`, so do not
         // include that extra information.
diff --git a/compiler/rustc_parse/src/parser/mod.rs b/compiler/rustc_parse/src/parser/mod.rs
index 0c265d7af0e..c23420661fa 100644
--- a/compiler/rustc_parse/src/parser/mod.rs
+++ b/compiler/rustc_parse/src/parser/mod.rs
@@ -536,7 +536,9 @@ impl<'a> Parser<'a> {
         } else if inedible.contains(&self.token.kind) {
             // leave it in the input
             Ok(false)
-        } else if self.last_unexpected_token_span == Some(self.token.span) {
+        } else if self.token.kind != token::Eof
+            && self.last_unexpected_token_span == Some(self.token.span)
+        {
             FatalError.raise();
         } else {
             self.expected_one_of_not_found(edible, inedible)
diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs
index 498fbd93288..c524d4c0367 100644
--- a/library/alloc/src/string.rs
+++ b/library/alloc/src/string.rs
@@ -1851,7 +1851,7 @@ impl String {
     }
 
     /// Consumes and leaks the `String`, returning a mutable reference to the contents,
-    /// `&'static mut str`.
+    /// `&'a mut str`.
     ///
     /// This is mainly useful for data that lives for the remainder of
     /// the program's life. Dropping the returned reference will cause a memory
@@ -1874,7 +1874,7 @@ impl String {
     /// ```
     #[unstable(feature = "string_leak", issue = "102929")]
     #[inline]
-    pub fn leak(self) -> &'static mut str {
+    pub fn leak<'a>(self) -> &'a mut str {
         let slice = self.vec.leak();
         unsafe { from_utf8_unchecked_mut(slice) }
     }
diff --git a/library/core/src/alloc/global.rs b/library/core/src/alloc/global.rs
index 18da70451f2..c582111701a 100644
--- a/library/core/src/alloc/global.rs
+++ b/library/core/src/alloc/global.rs
@@ -235,7 +235,8 @@ pub unsafe trait GlobalAlloc {
     /// * `new_size` must be greater than zero.
     ///
     /// * `new_size`, when rounded up to the nearest multiple of `layout.align()`,
-    ///   must not overflow (i.e., the rounded value must be less than `usize::MAX`).
+    ///   must not overflow isize (i.e., the rounded value must be less than or
+    ///   equal to `isize::MAX`).
     ///
     /// (Extension subtraits might provide more specific bounds on
     /// behavior, e.g., guarantee a sentinel address or a null pointer
diff --git a/src/librustdoc/clean/inline.rs b/src/librustdoc/clean/inline.rs
index c852f9cca2b..7dc08b3b1ff 100644
--- a/src/librustdoc/clean/inline.rs
+++ b/src/librustdoc/clean/inline.rs
@@ -355,9 +355,9 @@ pub(crate) fn build_impl(
         return;
     }
 
-    let _prof_timer = cx.tcx.sess.prof.generic_activity("build_impl");
-
     let tcx = cx.tcx;
+    let _prof_timer = tcx.sess.prof.generic_activity("build_impl");
+
     let associated_trait = tcx.impl_trait_ref(did).map(ty::EarlyBinder::skip_binder);
 
     // Only inline impl if the implemented trait is
diff --git a/src/librustdoc/clean/utils.rs b/src/librustdoc/clean/utils.rs
index 17aa6b38e38..366f9395296 100644
--- a/src/librustdoc/clean/utils.rs
+++ b/src/librustdoc/clean/utils.rs
@@ -193,7 +193,7 @@ pub(crate) fn build_deref_target_impls(
         };
 
         if let Some(prim) = target.primitive_type() {
-            let _prof_timer = cx.tcx.sess.prof.generic_activity("build_primitive_inherent_impls");
+            let _prof_timer = tcx.sess.prof.generic_activity("build_primitive_inherent_impls");
             for did in prim.impls(tcx).filter(|did| !did.is_local()) {
                 inline::build_impl(cx, did, None, ret);
             }
diff --git a/src/librustdoc/config.rs b/src/librustdoc/config.rs
index dfa4b091b01..9f08609a6d1 100644
--- a/src/librustdoc/config.rs
+++ b/src/librustdoc/config.rs
@@ -314,7 +314,6 @@ impl Options {
         matches: &getopts::Matches,
         args: Vec<String>,
     ) -> Result<(Options, RenderOptions), i32> {
-        let args = &args[1..];
         // Check for unstable options.
         nightly_options::check_nightly_options(matches, &opts());
 
diff --git a/src/librustdoc/formats/cache.rs b/src/librustdoc/formats/cache.rs
index c4758fd9866..8aaad8bce1b 100644
--- a/src/librustdoc/formats/cache.rs
+++ b/src/librustdoc/formats/cache.rs
@@ -147,7 +147,7 @@ impl Cache {
 
         // Cache where all our extern crates are located
         // FIXME: this part is specific to HTML so it'd be nice to remove it from the common code
-        for &crate_num in cx.tcx.crates(()) {
+        for &crate_num in tcx.crates(()) {
             let e = ExternalCrate { crate_num };
 
             let name = e.name(tcx);
diff --git a/src/librustdoc/html/render/print_item.rs b/src/librustdoc/html/render/print_item.rs
index 2961a288406..62027a3fa19 100644
--- a/src/librustdoc/html/render/print_item.rs
+++ b/src/librustdoc/html/render/print_item.rs
@@ -9,6 +9,8 @@ use rustc_middle::middle::stability;
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_span::hygiene::MacroKind;
 use rustc_span::symbol::{kw, sym, Symbol};
+use std::borrow::Borrow;
+use std::cell::{RefCell, RefMut};
 use std::cmp::Ordering;
 use std::fmt;
 use std::rc::Rc;
@@ -216,6 +218,53 @@ fn toggle_close(mut w: impl fmt::Write) {
     w.write_str("</details>").unwrap();
 }
 
+trait ItemTemplate<'a, 'cx: 'a>: askama::Template + fmt::Display {
+    fn item_and_mut_cx(&self) -> (&'a clean::Item, RefMut<'_, &'a mut Context<'cx>>);
+}
+
+fn item_template_document<'a: 'b, 'b, 'cx: 'a>(
+    templ: &'b impl ItemTemplate<'a, 'cx>,
+) -> impl fmt::Display + Captures<'a> + 'b + Captures<'cx> {
+    display_fn(move |f| {
+        let (item, mut cx) = templ.item_and_mut_cx();
+        let v = document(*cx, item, None, HeadingOffset::H2);
+        write!(f, "{v}")
+    })
+}
+
+fn item_template_document_type_layout<'a: 'b, 'b, 'cx: 'a>(
+    templ: &'b impl ItemTemplate<'a, 'cx>,
+) -> impl fmt::Display + Captures<'a> + 'b + Captures<'cx> {
+    display_fn(move |f| {
+        let (item, cx) = templ.item_and_mut_cx();
+        let def_id = item.item_id.expect_def_id();
+        let v = document_type_layout(*cx, def_id);
+        write!(f, "{v}")
+    })
+}
+
+fn item_template_render_attributes_in_pre<'a: 'b, 'b, 'cx: 'a>(
+    templ: &'b impl ItemTemplate<'a, 'cx>,
+) -> impl fmt::Display + Captures<'a> + 'b + Captures<'cx> {
+    display_fn(move |f| {
+        let (item, cx) = templ.item_and_mut_cx();
+        let tcx = cx.tcx();
+        let v = render_attributes_in_pre(item, "", tcx);
+        write!(f, "{v}")
+    })
+}
+
+fn item_template_render_assoc_items<'a: 'b, 'b, 'cx: 'a>(
+    templ: &'b impl ItemTemplate<'a, 'cx>,
+) -> impl fmt::Display + Captures<'a> + 'b + Captures<'cx> {
+    display_fn(move |f| {
+        let (item, mut cx) = templ.item_and_mut_cx();
+        let def_id = item.item_id.expect_def_id();
+        let v = render_assoc_items(*cx, item, def_id, AssocItemRender::All);
+        write!(f, "{v}")
+    })
+}
+
 fn item_module(w: &mut Buffer, cx: &mut Context<'_>, item: &clean::Item, items: &[clean::Item]) {
     write!(w, "{}", document(cx, item, None, HeadingOffset::H2));
 
@@ -356,18 +405,18 @@ fn item_module(w: &mut Buffer, cx: &mut Context<'_>, item: &clean::Item, items:
 
             clean::ImportItem(ref import) => {
                 let stab_tags = if let Some(import_def_id) = import.source.did {
-                    let ast_attrs = cx.tcx().get_attrs_unchecked(import_def_id);
+                    let ast_attrs = tcx.get_attrs_unchecked(import_def_id);
                     let import_attrs = Box::new(clean::Attributes::from_ast(ast_attrs));
 
                     // Just need an item with the correct def_id and attrs
                     let import_item = clean::Item {
                         item_id: import_def_id.into(),
                         attrs: import_attrs,
-                        cfg: ast_attrs.cfg(cx.tcx(), &cx.cache().hidden_cfg),
+                        cfg: ast_attrs.cfg(tcx, &cx.cache().hidden_cfg),
                         ..myitem.clone()
                     };
 
-                    let stab_tags = Some(extra_info_tags(&import_item, item, cx.tcx()).to_string());
+                    let stab_tags = Some(extra_info_tags(&import_item, item, tcx).to_string());
                     stab_tags
                 } else {
                     None
@@ -405,8 +454,7 @@ fn item_module(w: &mut Buffer, cx: &mut Context<'_>, item: &clean::Item, items:
 
                 let unsafety_flag = match *myitem.kind {
                     clean::FunctionItem(_) | clean::ForeignFunctionItem(_)
-                        if myitem.fn_header(cx.tcx()).unwrap().unsafety
-                            == hir::Unsafety::Unsafe =>
+                        if myitem.fn_header(tcx).unwrap().unsafety == hir::Unsafety::Unsafe =>
                     {
                         "<sup title=\"unsafe function\">⚠</sup>"
                     }
@@ -439,7 +487,7 @@ fn item_module(w: &mut Buffer, cx: &mut Context<'_>, item: &clean::Item, items:
                      {docs_before}{docs}{docs_after}",
                     name = myitem.name.unwrap(),
                     visibility_emoji = visibility_emoji,
-                    stab_tags = extra_info_tags(myitem, item, cx.tcx()),
+                    stab_tags = extra_info_tags(myitem, item, tcx),
                     class = myitem.type_(),
                     unsafety_flag = unsafety_flag,
                     href = item_path(myitem.type_(), myitem.name.unwrap().as_str()),
@@ -886,7 +934,7 @@ fn item_trait(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, t: &clean:
             write_small_section_header(w, "foreign-impls", "Implementations on Foreign Types", "");
 
             for implementor in foreign {
-                let provided_methods = implementor.inner_impl().provided_trait_methods(cx.tcx());
+                let provided_methods = implementor.inner_impl().provided_trait_methods(tcx);
                 let assoc_link =
                     AssocItemLink::GotoSource(implementor.impl_item.item_id, &provided_methods);
                 render_impl(
@@ -919,7 +967,7 @@ fn item_trait(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, t: &clean:
         }
         w.write_str("</div>");
 
-        if t.is_auto(cx.tcx()) {
+        if t.is_auto(tcx) {
             write_small_section_header(
                 w,
                 "synthetic-implementors",
@@ -948,7 +996,7 @@ fn item_trait(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, t: &clean:
             "<div id=\"implementors-list\"></div>",
         );
 
-        if t.is_auto(cx.tcx()) {
+        if t.is_auto(tcx) {
             write_small_section_header(
                 w,
                 "synthetic-implementors",
@@ -1131,32 +1179,18 @@ fn item_union(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, s: &clean:
     #[derive(Template)]
     #[template(path = "item_union.html")]
     struct ItemUnion<'a, 'cx> {
-        cx: std::cell::RefCell<&'a mut Context<'cx>>,
+        cx: RefCell<&'a mut Context<'cx>>,
         it: &'a clean::Item,
         s: &'a clean::Union,
     }
 
-    impl<'a, 'cx: 'a> ItemUnion<'a, 'cx> {
-        fn render_assoc_items<'b>(
-            &'b self,
-        ) -> impl fmt::Display + Captures<'a> + 'b + Captures<'cx> {
-            display_fn(move |f| {
-                let def_id = self.it.item_id.expect_def_id();
-                let mut cx = self.cx.borrow_mut();
-                let v = render_assoc_items(*cx, self.it, def_id, AssocItemRender::All);
-                write!(f, "{v}")
-            })
-        }
-        fn document_type_layout<'b>(
-            &'b self,
-        ) -> impl fmt::Display + Captures<'a> + 'b + Captures<'cx> {
-            display_fn(move |f| {
-                let def_id = self.it.item_id.expect_def_id();
-                let cx = self.cx.borrow_mut();
-                let v = document_type_layout(*cx, def_id);
-                write!(f, "{v}")
-            })
+    impl<'a, 'cx: 'a> ItemTemplate<'a, 'cx> for ItemUnion<'a, 'cx> {
+        fn item_and_mut_cx(&self) -> (&'a clean::Item, RefMut<'_, &'a mut Context<'cx>>) {
+            (self.it, self.cx.borrow_mut())
         }
+    }
+
+    impl<'a, 'cx: 'a> ItemUnion<'a, 'cx> {
         fn render_union<'b>(&'b self) -> impl fmt::Display + Captures<'a> + 'b + Captures<'cx> {
             display_fn(move |f| {
                 let cx = self.cx.borrow_mut();
@@ -1164,22 +1198,6 @@ fn item_union(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, s: &clean:
                 write!(f, "{v}")
             })
         }
-        fn render_attributes_in_pre<'b>(
-            &'b self,
-        ) -> impl fmt::Display + Captures<'a> + 'b + Captures<'cx> {
-            display_fn(move |f| {
-                let tcx = self.cx.borrow().tcx();
-                let v = render_attributes_in_pre(self.it, "", tcx);
-                write!(f, "{v}")
-            })
-        }
-        fn document<'b>(&'b self) -> impl fmt::Display + Captures<'a> + 'b + Captures<'cx> {
-            display_fn(move |f| {
-                let mut cx = self.cx.borrow_mut();
-                let v = document(*cx, self.it, None, HeadingOffset::H2);
-                write!(f, "{v}")
-            })
-        }
         fn document_field<'b>(
             &'b self,
             field: &'a clean::Item,
@@ -1219,7 +1237,7 @@ fn item_union(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, s: &clean:
         }
     }
 
-    ItemUnion { cx: std::cell::RefCell::new(cx), it, s }.render_into(w).unwrap();
+    ItemUnion { cx: RefCell::new(cx), it, s }.render_into(w).unwrap();
 }
 
 fn print_tuple_struct_fields<'a, 'cx: 'a>(
diff --git a/src/librustdoc/html/render/type_layout.rs b/src/librustdoc/html/render/type_layout.rs
index 22aec623335..c9b95b1e645 100644
--- a/src/librustdoc/html/render/type_layout.rs
+++ b/src/librustdoc/html/render/type_layout.rs
@@ -54,13 +54,13 @@ pub(crate) fn document_type_layout<'a, 'cx: 'a>(
                     } else if let Primitive::Int(i, _) = tag.primitive() {
                         i.size().bytes()
                     } else {
-                        span_bug!(cx.tcx().def_span(ty_def_id), "tag is neither niche nor int")
+                        span_bug!(tcx.def_span(ty_def_id), "tag is neither niche nor int")
                     };
                 variants
                     .iter_enumerated()
                     .map(|(variant_idx, variant_layout)| {
                         let Adt(adt, _) = type_layout.ty.kind() else {
-                            span_bug!(cx.tcx().def_span(ty_def_id), "not an adt")
+                            span_bug!(tcx.def_span(ty_def_id), "not an adt")
                         };
                         let name = adt.variant(variant_idx).name;
                         let is_unsized = variant_layout.abi.is_unsized();
diff --git a/src/librustdoc/html/templates/item_union.html b/src/librustdoc/html/templates/item_union.html
index a01457971c1..c2196700513 100644
--- a/src/librustdoc/html/templates/item_union.html
+++ b/src/librustdoc/html/templates/item_union.html
@@ -1,8 +1,8 @@
 <pre class="rust item-decl"><code>
-    {{ self.render_attributes_in_pre() | safe }}
+    {{ self::item_template_render_attributes_in_pre(self.borrow()) | safe }}
     {{ self.render_union() | safe }}
 </code></pre>
-{{ self.document() | safe }}
+{{ self::item_template_document(self.borrow()) | safe }}
 {% if self.fields_iter().peek().is_some() %}
     <h2 id="fields" class="fields small-section-header">
         Fields<a href="#fields" class="anchor">§</a>
@@ -19,5 +19,5 @@
         {{ self.document_field(field) | safe }}
     {% endfor %}
 {% endif %}
-{{ self.render_assoc_items() | safe }}
-{{ self.document_type_layout() | safe }}
+{{ self::item_template_render_assoc_items(self.borrow()) | safe }}
+{{ self::item_template_document_type_layout(self.borrow()) | safe }}
diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index 0a56916edcd..12c622e026f 100644
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -712,13 +712,23 @@ fn run_renderer<'tcx, T: formats::FormatRenderer<'tcx>>(
 }
 
 fn main_args(at_args: &[String]) -> MainResult {
+    // Throw away the first argument, the name of the binary.
+    // In case of at_args being empty, as might be the case by
+    // passing empty argument array to execve under some platforms,
+    // just use an empty slice.
+    //
+    // This situation was possible before due to arg_expand_all being
+    // called before removing the argument, enabling a crash by calling
+    // the compiler with @empty_file as argv[0] and no more arguments.
+    let at_args = at_args.get(1..).unwrap_or_default();
+
     let args = rustc_driver::args::arg_expand_all(at_args);
 
     let mut options = getopts::Options::new();
     for option in opts() {
         (option.apply)(&mut options);
     }
-    let matches = match options.parse(&args[1..]) {
+    let matches = match options.parse(&args) {
         Ok(m) => m,
         Err(err) => {
             early_error(ErrorOutputType::default(), err.to_string());
diff --git a/src/librustdoc/passes/collect_intra_doc_links.rs b/src/librustdoc/passes/collect_intra_doc_links.rs
index 417bdd58ad4..061a572c46b 100644
--- a/src/librustdoc/passes/collect_intra_doc_links.rs
+++ b/src/librustdoc/passes/collect_intra_doc_links.rs
@@ -723,7 +723,7 @@ fn resolve_associated_trait_item<'a>(
         .iter()
         .flat_map(|&(impl_, trait_)| {
             filter_assoc_items_by_name_and_namespace(
-                cx.tcx,
+                tcx,
                 trait_,
                 Ident::with_dummy_span(item_name),
                 ns,
@@ -1743,7 +1743,7 @@ fn resolution_failure(
                             if let Ok(v_res) = collector.resolve(start, ns, item_id, module_id) {
                                 debug!("found partial_res={:?}", v_res);
                                 if !v_res.is_empty() {
-                                    *partial_res = Some(full_res(collector.cx.tcx, v_res[0]));
+                                    *partial_res = Some(full_res(tcx, v_res[0]));
                                     *unresolved = end.into();
                                     break 'outer;
                                 }
diff --git a/src/librustdoc/passes/collect_trait_impls.rs b/src/librustdoc/passes/collect_trait_impls.rs
index 8d204ddb79e..fbf827cce09 100644
--- a/src/librustdoc/passes/collect_trait_impls.rs
+++ b/src/librustdoc/passes/collect_trait_impls.rs
@@ -19,9 +19,10 @@ pub(crate) const COLLECT_TRAIT_IMPLS: Pass = Pass {
 };
 
 pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) -> Crate {
+    let tcx = cx.tcx;
     // We need to check if there are errors before running this pass because it would crash when
     // we try to get auto and blanket implementations.
-    if cx.tcx.sess.diagnostic().has_errors_or_lint_errors().is_some() {
+    if tcx.sess.diagnostic().has_errors_or_lint_errors().is_some() {
         return krate;
     }
 
@@ -32,8 +33,7 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
     });
 
     let local_crate = ExternalCrate { crate_num: LOCAL_CRATE };
-    let prims: FxHashSet<PrimitiveType> =
-        local_crate.primitives(cx.tcx).iter().map(|p| p.1).collect();
+    let prims: FxHashSet<PrimitiveType> = local_crate.primitives(tcx).iter().map(|p| p.1).collect();
 
     let crate_items = {
         let mut coll = ItemCollector::new();
@@ -46,9 +46,9 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
 
     // External trait impls.
     {
-        let _prof_timer = cx.tcx.sess.prof.generic_activity("build_extern_trait_impls");
-        for &cnum in cx.tcx.crates(()) {
-            for &impl_def_id in cx.tcx.trait_impls_in_crate(cnum) {
+        let _prof_timer = tcx.sess.prof.generic_activity("build_extern_trait_impls");
+        for &cnum in tcx.crates(()) {
+            for &impl_def_id in tcx.trait_impls_in_crate(cnum) {
                 inline::build_impl(cx, impl_def_id, None, &mut new_items_external);
             }
         }
@@ -56,14 +56,13 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
 
     // Local trait impls.
     {
-        let _prof_timer = cx.tcx.sess.prof.generic_activity("build_local_trait_impls");
+        let _prof_timer = tcx.sess.prof.generic_activity("build_local_trait_impls");
         let mut attr_buf = Vec::new();
-        for &impl_def_id in cx.tcx.trait_impls_in_crate(LOCAL_CRATE) {
-            let mut parent = Some(cx.tcx.parent(impl_def_id));
+        for &impl_def_id in tcx.trait_impls_in_crate(LOCAL_CRATE) {
+            let mut parent = Some(tcx.parent(impl_def_id));
             while let Some(did) = parent {
                 attr_buf.extend(
-                    cx.tcx
-                        .get_attrs(did, sym::doc)
+                    tcx.get_attrs(did, sym::doc)
                         .filter(|attr| {
                             if let Some([attr]) = attr.meta_item_list().as_deref() {
                                 attr.has_name(sym::cfg)
@@ -73,25 +72,24 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
                         })
                         .cloned(),
                 );
-                parent = cx.tcx.opt_parent(did);
+                parent = tcx.opt_parent(did);
             }
             inline::build_impl(cx, impl_def_id, Some((&attr_buf, None)), &mut new_items_local);
             attr_buf.clear();
         }
     }
 
-    cx.tcx.sess.prof.generic_activity("build_primitive_trait_impls").run(|| {
-        for def_id in PrimitiveType::all_impls(cx.tcx) {
+    tcx.sess.prof.generic_activity("build_primitive_trait_impls").run(|| {
+        for def_id in PrimitiveType::all_impls(tcx) {
             // Try to inline primitive impls from other crates.
             if !def_id.is_local() {
                 inline::build_impl(cx, def_id, None, &mut new_items_external);
             }
         }
-        for (prim, did) in PrimitiveType::primitive_locations(cx.tcx) {
+        for (prim, did) in PrimitiveType::primitive_locations(tcx) {
             // Do not calculate blanket impl list for docs that are not going to be rendered.
             // While the `impl` blocks themselves are only in `libcore`, the module with `doc`
             // attached is directly included in `libstd` as well.
-            let tcx = cx.tcx;
             if did.is_local() {
                 for def_id in prim.impls(tcx).filter(|def_id| {
                     // Avoid including impl blocks with filled-in generics.
@@ -157,7 +155,7 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
     // scan through included items ahead of time to splice in Deref targets to the "valid" sets
     for it in new_items_external.iter().chain(new_items_local.iter()) {
         if let ImplItem(box Impl { ref for_, ref trait_, ref items, .. }) = *it.kind &&
-            trait_.as_ref().map(|t| t.def_id()) == cx.tcx.lang_items().deref_trait() &&
+            trait_.as_ref().map(|t| t.def_id()) == tcx.lang_items().deref_trait() &&
             cleaner.keep_impl(for_, true)
         {
             let target = items
@@ -199,7 +197,7 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
         if let ImplItem(box Impl { ref for_, ref trait_, ref kind, .. }) = *it.kind {
             cleaner.keep_impl(
                 for_,
-                trait_.as_ref().map(|t| t.def_id()) == cx.tcx.lang_items().deref_trait(),
+                trait_.as_ref().map(|t| t.def_id()) == tcx.lang_items().deref_trait(),
             ) || trait_.as_ref().map_or(false, |t| cleaner.keep_impl_with_def_id(t.def_id().into()))
                 || kind.is_blanket()
         } else {
diff --git a/src/librustdoc/passes/lint/unescaped_backticks.rs b/src/librustdoc/passes/lint/unescaped_backticks.rs
index 683c224c4be..865212205ed 100644
--- a/src/librustdoc/passes/lint/unescaped_backticks.rs
+++ b/src/librustdoc/passes/lint/unescaped_backticks.rs
@@ -56,7 +56,7 @@ pub(crate) fn visit_item(cx: &DocContext<'_>, item: &Item) {
                 )
                 .unwrap_or_else(|| item.attr_span(tcx));
 
-                cx.tcx.struct_span_lint_hir(crate::lint::UNESCAPED_BACKTICKS, hir_id, span, "unescaped backtick", |lint| {
+                tcx.struct_span_lint_hir(crate::lint::UNESCAPED_BACKTICKS, hir_id, span, "unescaped backtick", |lint| {
                     let mut help_emitted = false;
 
                     match element.prev_code_guess {
diff --git a/src/librustdoc/visit_ast.rs b/src/librustdoc/visit_ast.rs
index eb813af779e..6b7ad4cf21a 100644
--- a/src/librustdoc/visit_ast.rs
+++ b/src/librustdoc/visit_ast.rs
@@ -280,9 +280,8 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
             return false;
         };
 
-        let is_private =
-            !self.cx.cache.effective_visibilities.is_directly_public(self.cx.tcx, ori_res_did);
-        let is_hidden = inherits_doc_hidden(self.cx.tcx, res_did, None);
+        let is_private = !self.cx.cache.effective_visibilities.is_directly_public(tcx, ori_res_did);
+        let is_hidden = inherits_doc_hidden(tcx, res_did, None);
 
         // Only inline if requested or if the item would otherwise be stripped.
         if (!please_inline && !is_private && !is_hidden) || is_no_inline {
@@ -290,7 +289,7 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
         }
 
         if !please_inline &&
-            let Some(item_def_id) = reexport_chain(self.cx.tcx, def_id, res_did).iter()
+            let Some(item_def_id) = reexport_chain(tcx, def_id, res_did).iter()
                 .flat_map(|reexport| reexport.id()).map(|id| id.expect_local())
                 .chain(iter::once(res_did)).nth(1) &&
             item_def_id != def_id &&
@@ -298,8 +297,8 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
                 .cx
                 .cache
                 .effective_visibilities
-                .is_directly_public(self.cx.tcx, item_def_id.to_def_id()) &&
-            !inherits_doc_hidden(self.cx.tcx, item_def_id, None)
+                .is_directly_public(tcx, item_def_id.to_def_id()) &&
+            !inherits_doc_hidden(tcx, item_def_id, None)
         {
             // The imported item is public and not `doc(hidden)` so no need to inline it.
             return false;
@@ -329,7 +328,7 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
             Node::Item(&hir::Item { kind: hir::ItemKind::Mod(ref m), .. }) if glob => {
                 let prev = mem::replace(&mut self.inlining, true);
                 for &i in m.item_ids {
-                    let i = self.cx.tcx.hir().item(i);
+                    let i = tcx.hir().item(i);
                     self.visit_item_inner(i, None, Some(def_id));
                 }
                 self.inlining = prev;
diff --git a/tests/ui/parser/issues/issue-111148.rs b/tests/ui/parser/issues/issue-111148.rs
new file mode 100644
index 00000000000..2502beab443
--- /dev/null
+++ b/tests/ui/parser/issues/issue-111148.rs
@@ -0,0 +1,2 @@
+fn a<<i<Y<w<>#
+//~^ ERROR expected one of `#`, `>`, `const`, identifier, or lifetime, found `<`
diff --git a/tests/ui/parser/issues/issue-111148.stderr b/tests/ui/parser/issues/issue-111148.stderr
new file mode 100644
index 00000000000..e6595a5cbcc
--- /dev/null
+++ b/tests/ui/parser/issues/issue-111148.stderr
@@ -0,0 +1,8 @@
+error: expected one of `#`, `>`, `const`, identifier, or lifetime, found `<`
+  --> $DIR/issue-111148.rs:1:6
+   |
+LL | fn a<<i<Y<w<>#
+   |      ^ expected one of `#`, `>`, `const`, identifier, or lifetime
+
+error: aborting due to previous error
+
generated by cgit-pink 1.4.1-3-g733a5 (git 2.37.1) at 2026-05-04 23:50:58 +0000