Address rust-lang/rust#112692

Author: smoelius

cargo-dylint/tests/boundary_toolchains.rs

@@ -8,6 +8,9 @@ use tempfile::tempdir;
 // smoelius: Put recent boundaries first, since they're more likely to cause problems.
 // smoelius: The relevant PRs and merge commits appear before each boundary.
 const BOUNDARIES: &[(&str, &str)] = &[
+    // https://github.com/rust-lang/rust/pull/112692
+    // https://github.com/rust-lang/rust/commit/b6144cd843d6eb6acc086797ea37e0c69c892b90
+    ("2023-06-28", "2023-06-29"),
     // https://github.com/rust-lang/rust/pull/111748
     // https://github.com/rust-lang/rust/commit/70e04bd88d85cab8ed110ace5a278fab106d0ef5
     ("2023-05-29", "2023-05-30"),

driver/src/lib.rs

@@ -127,10 +127,7 @@ impl Callbacks {
                         path.to_string_lossy(),
                         err
                     );
-                    rustc_session::early_error(
-                        rustc_session::config::ErrorOutputType::default(),
-                        Box::leak(msg.into_boxed_str()) as &str,
-                    );
+                    early_error(msg);
                 });
 
                 loaded_libs.push(LoadedLibrary { path, lib });
@@ -140,6 +137,24 @@ impl Callbacks {
     }
 }
 
+#[rustversion::before(2023-06-28)]
+fn early_error(msg: String) -> ! {
+    rustc_session::early_error(
+        rustc_session::config::ErrorOutputType::default(),
+        Box::leak(msg.into_boxed_str()) as &str,
+    )
+}
+
+#[rustversion::since(2023-06-28)]
+extern crate rustc_errors;
+
+#[rustversion::since(2023-06-28)]
+fn early_error(msg: impl Into<rustc_errors::DiagnosticMessage>) -> ! {
+    let handler =
+        rustc_session::EarlyErrorHandler::new(rustc_session::config::ErrorOutputType::default());
+    handler.early_error(msg)
+}
+
 #[rustversion::before(2022-07-14)]
 fn zero_mir_opt_level(config: &mut rustc_interface::Config) {
     trait Zeroable {

utils/linting/src/lib.rs

@@ -456,10 +456,7 @@ pub fn config_toml(name: &str) -> ConfigResult<Option<toml::Value>> {
 pub fn init_config(sess: &rustc_session::Session) {
     try_init_config(sess).unwrap_or_else(|err| {
         let msg = format!("could not read configuration file: {err}");
-        rustc_session::early_error(
-            rustc_session::config::ErrorOutputType::default(),
-            Box::leak(msg.into_boxed_str()) as &str,
-        );
+        early_error(msg);
     });
 }
 
@@ -565,3 +562,21 @@ fn local_crate_source_file(sess: &rustc_session::Session) -> Option<PathBuf> {
 fn local_crate_source_file(sess: &rustc_session::Session) -> Option<PathBuf> {
     sess.local_crate_source_file()
 }
+
+#[rustversion::before(2023-06-28)]
+fn early_error(msg: String) -> ! {
+    rustc_session::early_error(
+        rustc_session::config::ErrorOutputType::default(),
+        Box::leak(msg.into_boxed_str()) as &str,
+    )
+}
+
+#[rustversion::since(2023-06-28)]
+extern crate rustc_errors;
+
+#[rustversion::since(2023-06-28)]
+fn early_error(msg: impl Into<rustc_errors::DiagnosticMessage>) -> ! {
+    let handler =
+        rustc_session::EarlyErrorHandler::new(rustc_session::config::ErrorOutputType::default());
+    handler.early_error(msg)
+}