Auto merge of #72975 - Dylan-DPC:rollup-6zvco5x, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #72718 (Add regression test for #72554)
 - #72782 (rustc_target: Remove `pre_link_args_crt`)
 - #72923 (Improve E0433, so that it suggests missing imports)
 - #72950 (fix `AdtDef` docs)
 - #72951 (Add Camelid per request)
 - #72964 (Bump libc dependency to latest version (0.2.71))

Failed merges:

r? @ghost

.mailmap

@@ -44,6 +44,7 @@ Brian Anderson <banderson@mozilla.com> <andersrb@gmail.com>
 Brian Anderson <banderson@mozilla.com> <banderson@mozilla.org>
 Brian Dawn <brian.t.dawn@gmail.com>
 Brian Leibig <brian@brianleibig.com> Brian Leibig <brian.leibig@gmail.com>
+Camelid <camelidcamel@gmail.com> <37223377+camelid@users.noreply.github.com>
 Carl-Anton Ingmarsson <mail@carlanton.se> <ca.ingmarsson@gmail.com>
 Carol (Nichols || Goulding) <carol.nichols@gmail.com> <193874+carols10cents@users.noreply.github.com>
 Carol (Nichols || Goulding) <carol.nichols@gmail.com> <carol.nichols@gmail.com>

Cargo.lock

@@ -1853,9 +1853,9 @@ checksum = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
 
 [[package]]
 name = "libc"
-version = "0.2.69"
+version = "0.2.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99e85c08494b21a9054e7fe1374a732aeadaff3980b6990b94bfd3a70f690005"
+checksum = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"
 dependencies = [
  "rustc-std-workspace-core",
 ]

src/librustc_codegen_ssa/back/link.rs

@@ -1253,20 +1253,10 @@ fn add_post_link_objects(
 
 /// Add arbitrary "pre-link" args defined by the target spec or from command line.
 /// FIXME: Determine where exactly these args need to be inserted.
-fn add_pre_link_args(
-    cmd: &mut dyn Linker,
-    sess: &Session,
-    flavor: LinkerFlavor,
-    crate_type: CrateType,
-) {
+fn add_pre_link_args(cmd: &mut dyn Linker, sess: &Session, flavor: LinkerFlavor) {
     if let Some(args) = sess.target.target.options.pre_link_args.get(&flavor) {
         cmd.args(args);
     }
-    if let Some(args) = sess.target.target.options.pre_link_args_crt.get(&flavor) {
-        if sess.crt_static(Some(crate_type)) {
-            cmd.args(args);
-        }
-    }
     cmd.args(&sess.opts.debugging_opts.pre_link_args);
 }
 
@@ -1502,7 +1492,7 @@ fn linker_with_args<'a, B: ArchiveBuilder<'a>>(
     let crt_objects_fallback = crt_objects_fallback(sess, crate_type);
 
     // NO-OPT-OUT, OBJECT-FILES-MAYBE, CUSTOMIZATION-POINT
-    add_pre_link_args(cmd, sess, flavor, crate_type);
+    add_pre_link_args(cmd, sess, flavor);
 
     // NO-OPT-OUT
     add_link_script(cmd, sess, tmpdir, crate_type);

src/librustc_codegen_ssa/back/linker.rs

@@ -315,6 +315,21 @@ impl<'a> Linker for GccLinker<'a> {
                 self.build_dylib(out_filename);
             }
         }
+        // VxWorks compiler driver introduced `--static-crt` flag specifically for rustc,
+        // it switches linking for libc and similar system libraries to static without using
+        // any `#[link]` attributes in the `libc` crate, see #72782 for details.
+        // FIXME: Switch to using `#[link]` attributes in the `libc` crate
+        // similarly to other targets.
+        if self.sess.target.target.target_os == "vxworks"
+            && matches!(
+                output_kind,
+                LinkOutputKind::StaticNoPicExe
+                    | LinkOutputKind::StaticPicExe
+                    | LinkOutputKind::StaticDylib
+            )
+        {
+            self.cmd.arg("--static-crt");
+        }
     }
 
     fn link_dylib(&mut self, lib: Symbol) {

src/librustc_middle/ty/mod.rs

@@ -1846,7 +1846,7 @@ pub struct FieldDef {
 
 /// The definition of a user-defined type, e.g., a `struct`, `enum`, or `union`.
 ///
-/// These are all interned (by `intern_adt_def`) into the `adt_defs` table.
+/// These are all interned (by `alloc_adt_def`) into the global arena.
 ///
 /// The initialism *ADT* stands for an [*algebraic data type (ADT)*][adt].
 /// This is slightly wrong because `union`s are not ADTs.

src/librustc_resolve/diagnostics.rs

@@ -1475,7 +1475,7 @@ crate fn show_candidates(
     // This is `None` if all placement locations are inside expansions
     use_placement_span: Option<Span>,
     candidates: &[ImportSuggestion],
-    better: bool,
+    instead: bool,
     found_use: bool,
 ) {
     if candidates.is_empty() {
@@ -1486,6 +1486,7 @@ crate fn show_candidates(
     // by iterating through a hash map, so make sure they are ordered:
     let mut path_strings: Vec<_> =
         candidates.iter().map(|c| path_names_to_string(&c.path)).collect();
+
     path_strings.sort();
     path_strings.dedup();
 
@@ -1494,8 +1495,9 @@ crate fn show_candidates(
     } else {
         ("one of these", "items")
     };
-    let instead = if better { " instead" } else { "" };
-    let msg = format!("consider importing {} {}{}", determiner, kind, instead);
+
+    let instead = if instead { " instead" } else { "" };
+    let mut msg = format!("consider importing {} {}{}", determiner, kind, instead);
 
     if let Some(span) = use_placement_span {
         for candidate in &mut path_strings {
@@ -1507,12 +1509,13 @@ crate fn show_candidates(
 
         err.span_suggestions(span, &msg, path_strings.into_iter(), Applicability::Unspecified);
     } else {
-        let mut msg = msg;
         msg.push(':');
+
         for candidate in path_strings {
             msg.push('\n');
             msg.push_str(&candidate);
         }
+
         err.note(&msg);
     }
 }