From 02423a5747f4b23cf1e4f51e5ec969887bf8be72 Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Thu, 22 Feb 2024 12:36:01 +1100
Subject: [PATCH] Make some `IntoDiagnostic` impls generic.

PR #119097 made the decision to make all `IntoDiagnostic` impls generic,
because this allowed a bunch of nice cleanups. But four hand-written
impls were unintentionally overlooked. This commit makes them generic.
---
 compiler/rustc_mir_build/src/errors.rs | 6 ++++--
 compiler/rustc_parse/src/errors.rs     | 8 ++++----
 compiler/rustc_session/src/errors.rs   | 8 ++++----
 3 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/compiler/rustc_mir_build/src/errors.rs b/compiler/rustc_mir_build/src/errors.rs
index 2a42dae289b..48b93ce0ac5 100644
--- a/compiler/rustc_mir_build/src/errors.rs
+++ b/compiler/rustc_mir_build/src/errors.rs
@@ -461,8 +461,10 @@ pub(crate) struct NonExhaustivePatternsTypeNotEmpty<'p, 'tcx, 'm> {
     pub ty: Ty<'tcx>,
 }
 
-impl<'a> IntoDiagnostic<'a> for NonExhaustivePatternsTypeNotEmpty<'_, '_, '_> {
-    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'_> {
+impl<'a, G: EmissionGuarantee> IntoDiagnostic<'a, G>
+    for NonExhaustivePatternsTypeNotEmpty<'_, '_, '_>
+{
+    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'_, G> {
         let mut diag = DiagnosticBuilder::new(
             dcx,
             level,
diff --git a/compiler/rustc_parse/src/errors.rs b/compiler/rustc_parse/src/errors.rs
index 2d4447a42c2..2c76e55a46d 100644
--- a/compiler/rustc_parse/src/errors.rs
+++ b/compiler/rustc_parse/src/errors.rs
@@ -1073,9 +1073,9 @@ pub(crate) struct ExpectedIdentifier {
     pub help_cannot_start_number: Option<HelpIdentifierStartsWithNumber>,
 }
 
-impl<'a> IntoDiagnostic<'a> for ExpectedIdentifier {
+impl<'a, G: EmissionGuarantee> IntoDiagnostic<'a, G> for ExpectedIdentifier {
     #[track_caller]
-    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'a> {
+    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'a, G> {
         let token_descr = TokenDescription::from_token(&self.token);
 
         let mut diag = DiagnosticBuilder::new(
@@ -1133,9 +1133,9 @@ pub(crate) struct ExpectedSemi {
     pub sugg: ExpectedSemiSugg,
 }
 
-impl<'a> IntoDiagnostic<'a> for ExpectedSemi {
+impl<'a, G: EmissionGuarantee> IntoDiagnostic<'a, G> for ExpectedSemi {
     #[track_caller]
-    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'a> {
+    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'a, G> {
         let token_descr = TokenDescription::from_token(&self.token);
 
         let mut diag = DiagnosticBuilder::new(
diff --git a/compiler/rustc_session/src/errors.rs b/compiler/rustc_session/src/errors.rs
index de7e04ba00f..73373e9ba58 100644
--- a/compiler/rustc_session/src/errors.rs
+++ b/compiler/rustc_session/src/errors.rs
@@ -3,8 +3,8 @@ use std::num::NonZero;
 use rustc_ast::token;
 use rustc_ast::util::literal::LitError;
 use rustc_errors::{
-    codes::*, DiagCtxt, DiagnosticBuilder, DiagnosticMessage, ErrorGuaranteed, IntoDiagnostic,
-    Level, MultiSpan,
+    codes::*, DiagCtxt, DiagnosticBuilder, DiagnosticMessage, EmissionGuarantee, ErrorGuaranteed,
+    IntoDiagnostic, Level, MultiSpan,
 };
 use rustc_macros::Diagnostic;
 use rustc_span::{Span, Symbol};
@@ -17,9 +17,9 @@ pub struct FeatureGateError {
     pub explain: DiagnosticMessage,
 }
 
-impl<'a> IntoDiagnostic<'a> for FeatureGateError {
+impl<'a, G: EmissionGuarantee> IntoDiagnostic<'a, G> for FeatureGateError {
     #[track_caller]
-    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'a> {
+    fn into_diagnostic(self, dcx: &'a DiagCtxt, level: Level) -> DiagnosticBuilder<'a, G> {
         DiagnosticBuilder::new(dcx, level, self.explain).with_span(self.span).with_code(E0658)
     }
 }