Address rust-lang/rust#111748

Author: smoelius

driver/src/lib.rs

@@ -1,4 +1,5 @@
 #![feature(rustc_private)]
+#![feature(string_leak)]
 #![deny(clippy::expect_used)]
 #![deny(clippy::unwrap_used)]
 #![deny(clippy::panic)]
@@ -119,14 +120,16 @@ impl Callbacks {
                 let lib = result.unwrap_or_else(|err| {
                     // smoelius: rust-lang/rust#111633 changed the type of `early_error`'s `msg`
                     // argument from `&str` to `impl Into<DiagnosticMessage>`.
+                    // smoelius: And rust-lang/rust#111748 made it that `msg` is borrowed for
+                    // `'static`. Since the program is about to exit, it's probably fine to leak the
+                    // string.
                     rustc_session::early_error(
                         rustc_session::config::ErrorOutputType::default(),
                         format!(
                             "could not load library `{}`: {}",
                             path.to_string_lossy(),
                             err
-                        )
-                        .as_str(),
+                        ).leak(),
                     );
                 });
 

examples/restriction/inconsistent_qualification/src/lib.rs

@@ -58,6 +58,7 @@ dylint_linting::declare_late_lint! {
 impl<'tcx> LateLintPass<'tcx> for InconsistentQualification {
     fn check_path(&mut self, cx: &LateContext<'tcx>, path: &Path<'tcx>, hir_id: HirId) {
         if_chain! {
+            if !path.span.from_expansion();
             // smoelius: On the Dylint source code itself, simply checking
             // `path.span.in_derive_expansion()` isn't sufficient to prevent false positives.
             if !cx
@@ -161,6 +162,7 @@ impl<'cx, 'tcx, 'syms> Visitor<'tcx> for UseVisitor<'cx, 'tcx, 'syms> {
                 UseKind::ListStem => false,
             };
             then {
+                println!("{:#?}\n{:?}", self.path, item.hir_id());
                 let prefix = self
                     .syms_prefix
                     .iter()

utils/linting/src/lib.rs

@@ -168,6 +168,7 @@
 //! [examples]: ../../examples
 
 #![feature(rustc_private)]
+#![feature(string_leak)]
 #![warn(unused_extern_crates)]
 
 #[allow(unused_extern_crates)]
@@ -457,7 +458,7 @@ pub fn init_config(sess: &rustc_session::Session) {
     try_init_config(sess).unwrap_or_else(|err| {
         rustc_session::early_error(
             rustc_session::config::ErrorOutputType::default(),
-            format!("could not read configuration file: {err}").as_str(),
+            format!("could not read configuration file: {err}").leak(),
         );
     });
 }