From 65daf3b01a0450e6772abfed88b207654681038d Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Sun, 2 Feb 2025 16:06:16 +0000
Subject: [PATCH] Replace ParseSess::set_dcx with DiagCtxt::set_emitter

Replacing the error emitter doesn't accidentally clear the error count.
---
 examples/rustc-interface-getting-diagnostics.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/examples/rustc-interface-getting-diagnostics.rs b/examples/rustc-interface-getting-diagnostics.rs
index be37dd86..2355cb85 100644
--- a/examples/rustc-interface-getting-diagnostics.rs
+++ b/examples/rustc-interface-getting-diagnostics.rs
@@ -10,6 +10,8 @@ extern crate rustc_interface;
 extern crate rustc_session;
 extern crate rustc_span;
 
+use std::sync::{Arc, Mutex};
+
 use rustc_errors::emitter::Emitter;
 use rustc_errors::registry::{self, Registry};
 use rustc_errors::translation::Translate;
@@ -17,8 +19,6 @@ use rustc_errors::{DiagCtxt, DiagInner, FluentBundle};
 use rustc_session::config;
 use rustc_span::source_map::SourceMap;
 
-use std::sync::{Arc, Mutex};
-
 struct DebugEmitter {
     source_map: Arc<SourceMap>,
     diagnostics: Arc<Mutex<Vec<DiagInner>>>,
@@ -67,10 +67,10 @@ fn main() {
         locale_resources: rustc_driver::DEFAULT_LOCALE_RESOURCES.to_owned(),
         lint_caps: rustc_hash::FxHashMap::default(),
         psess_created: Some(Box::new(|parse_sess| {
-            parse_sess.set_dcx(DiagCtxt::new(Box::new(DebugEmitter {
+            parse_sess.dcx().set_emitter(Box::new(DebugEmitter {
                 source_map: parse_sess.clone_source_map(),
                 diagnostics,
-            })));
+            }));
         })),
         register_lints: None,
         override_queries: None,