From 6be35251d14b1a12b259f24bb4e6abe2cbba4208 Mon Sep 17 00:00:00 2001
From: Stefan Oehme <st.oehme@gmail.com>
Date: Fri, 15 Aug 2025 19:45:49 +0200
Subject: [PATCH] [#11048] Fix race condition in MessageUtils

Wait for the AnsiConsole#systemInstall call in the FastTerminal background thread before
uninstalling. Otherwise a quickly finishing build might leave the terminal and system streams
in a broken state.
---
 .../src/main/java/org/apache/maven/jline/MessageUtils.java    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/impl/maven-jline/src/main/java/org/apache/maven/jline/MessageUtils.java b/impl/maven-jline/src/main/java/org/apache/maven/jline/MessageUtils.java
index 35a5416850b9..faf84c95a9a8 100644
--- a/impl/maven-jline/src/main/java/org/apache/maven/jline/MessageUtils.java
+++ b/impl/maven-jline/src/main/java/org/apache/maven/jline/MessageUtils.java
@@ -94,6 +94,10 @@ public static void systemUninstall() {
 
     private static void doSystemUninstall() {
         try {
+            if (terminal instanceof FastTerminal) {
+                // wait for the asynchronous systemInstall call before we uninstall to ensure a consistent state
+                ((FastTerminal) terminal).getTerminal();
+            }
             AnsiConsole.systemUninstall();
         } finally {
             terminal = null;