From 1d96b5778bcd0e72974921ec99b2149f2003e4c4 Mon Sep 17 00:00:00 2001
From: Yeregorix <yeregorixcraft@gmail.com>
Date: Sat, 14 Jan 2023 21:04:58 +0100
Subject: [PATCH] Don't attempt to relaunch ModLaunch when it failed

---
 .../java/org/spongepowered/mij/SharedModLauncher.java    | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/java/org/spongepowered/mij/SharedModLauncher.java b/src/main/java/org/spongepowered/mij/SharedModLauncher.java
index c5f11cd..516c729 100644
--- a/src/main/java/org/spongepowered/mij/SharedModLauncher.java
+++ b/src/main/java/org/spongepowered/mij/SharedModLauncher.java
@@ -32,6 +32,7 @@
  */
 public class SharedModLauncher {
     private static ClassLoader transformingClassLoader;
+    private static boolean launcherFailed = false;
 
     /**
      * Returns the shared transforming class loader.
@@ -43,6 +44,11 @@ public class SharedModLauncher {
      */
     public static ClassLoader getTransformingClassLoader(String[] launcherArgs) {
         if (SharedModLauncher.transformingClassLoader == null) {
+            if (SharedModLauncher.launcherFailed) {
+                // Don't attempt to relaunch ModLaunch when it failed
+                throw new IllegalStateException("ModLauncher has previously failed to launch");
+            }
+
             final Thread thread = Thread.currentThread();
             final ClassLoader originalClassLoader = thread.getContextClassLoader();
 
@@ -51,6 +57,9 @@ public static ClassLoader getTransformingClassLoader(String[] launcherArgs) {
 
                 // Capture the context class loader set by ModLauncher
                 SharedModLauncher.transformingClassLoader = thread.getContextClassLoader();
+            } catch (RuntimeException e) {
+                SharedModLauncher.launcherFailed = true;
+                throw e;
             } finally {
                 // Restore the original context class loader to avoid potential issues with classic tests
                 thread.setContextClassLoader(originalClassLoader);