4 files changed, 11 insertions, 5 deletions
diff --git a/compiler/rustc_errors/src/diagnostic.rs b/compiler/rustc_errors/src/diagnostic.rs
index 5d345e788e9..a17e0da47a5 100644
--- a/compiler/rustc_errors/src/diagnostic.rs
+++ b/compiler/rustc_errors/src/diagnostic.rs
@@ -730,7 +730,7 @@ impl<'a, G: EmissionGuarantee> Diag<'a, G> {
     } }
 
     #[rustc_lint_diagnostics]
-    fn highlighted_note(&mut self, msg: Vec<StringPart>) -> &mut Self {
+    pub fn highlighted_note(&mut self, msg: Vec<StringPart>) -> &mut Self {
         self.sub_with_highlights(Level::Note, msg, MultiSpan::new());
         self
     }
diff --git a/compiler/rustc_errors/src/diagnostic_impls.rs b/compiler/rustc_errors/src/diagnostic_impls.rs
index f90190797ae..6c0551848d6 100644
--- a/compiler/rustc_errors/src/diagnostic_impls.rs
+++ b/compiler/rustc_errors/src/diagnostic_impls.rs
@@ -46,6 +46,7 @@ impl<'a, T: Clone + IntoDiagArg> IntoDiagArg for &'a T {
     }
 }
 
+#[macro_export]
 macro_rules! into_diag_arg_using_display {
     ($( $ty:ty ),+ $(,)?) => {
         $(
diff --git a/compiler/rustc_errors/src/emitter.rs b/compiler/rustc_errors/src/emitter.rs
index bd8e78bda26..6ce3fa3535d 100644
--- a/compiler/rustc_errors/src/emitter.rs
+++ b/compiler/rustc_errors/src/emitter.rs
@@ -1513,7 +1513,9 @@ impl HumanEmitter {
                 for line_idx in 0..annotated_file.lines.len() {
                     let file = annotated_file.file.clone();
                     let line = &annotated_file.lines[line_idx];
-                    if let Some(source_string) = file.get_line(line.line_index - 1) {
+                    if let Some(source_string) =
+                        line.line_index.checked_sub(1).and_then(|l| file.get_line(l))
+                    {
                         let leading_whitespace = source_string
                             .chars()
                             .take_while(|c| c.is_whitespace())
@@ -1553,7 +1555,10 @@ impl HumanEmitter {
                 for line in &annotated_file.lines {
                     max_line_len = max(
                         max_line_len,
-                        annotated_file.file.get_line(line.line_index - 1).map_or(0, |s| s.len()),
+                        line.line_index
+                            .checked_sub(1)
+                            .and_then(|l| annotated_file.file.get_line(l))
+                            .map_or(0, |s| s.len()),
                     );
                     for ann in &line.annotations {
                         span_right_margin = max(span_right_margin, ann.start_col.display);
diff --git a/compiler/rustc_errors/src/lib.rs b/compiler/rustc_errors/src/lib.rs
index b4107bd4a2b..8d6b22a9fa9 100644
--- a/compiler/rustc_errors/src/lib.rs
+++ b/compiler/rustc_errors/src/lib.rs
@@ -102,9 +102,9 @@ pub type PResult<'a, T> = Result<T, PErr<'a>>;
 rustc_fluent_macro::fluent_messages! { "../messages.ftl" }
 
 // `PResult` is used a lot. Make sure it doesn't unintentionally get bigger.
-#[cfg(all(any(target_arch = "x86_64", target_arch = "aarch64"), target_pointer_width = "64"))]
+#[cfg(target_pointer_width = "64")]
 rustc_data_structures::static_assert_size!(PResult<'_, ()>, 16);
-#[cfg(all(any(target_arch = "x86_64", target_arch = "aarch64"), target_pointer_width = "64"))]
+#[cfg(target_pointer_width = "64")]
 rustc_data_structures::static_assert_size!(PResult<'_, bool>, 16);
 
 #[derive(Debug, PartialEq, Eq, Clone, Copy, Hash, Encodable, Decodable)]