From 49659138ff1fb19a9a4df88c4d62439cb2fce15b Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 28 Jan 2026 08:06:13 +0000
Subject: [PATCH 1/2] Initial plan


From 7b6d08e600385ba31bde75a8a6746803ea041d30 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 28 Jan 2026 08:28:22 +0000
Subject: [PATCH 2/2] Fix Java 17 ClassCircularityError in RuntimeAttach smoke
 tests

Pre-load java.lang.invoke.MethodHandle before runtime attach to avoid
ClassCircularityError that occurs with OpenTelemetry 2.22.0-alpha on
Java 17 HotSpot JVM.

See https://github.com/open-telemetry/opentelemetry-java-instrumentation/issues/3396

Co-authored-by: xiang17 <9310587+xiang17@users.noreply.github.com>
---
 .../applicationinsights/smoketestapp/SpringBootApp.java    | 7 +++++++
 .../applicationinsights/smoketestapp/SpringBootApp.java    | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/smoke-tests/apps/RuntimeAttach/src/main/java/com/microsoft/applicationinsights/smoketestapp/SpringBootApp.java b/smoke-tests/apps/RuntimeAttach/src/main/java/com/microsoft/applicationinsights/smoketestapp/SpringBootApp.java
index 4e55aefe9be..6bd7b4cfe7d 100644
--- a/smoke-tests/apps/RuntimeAttach/src/main/java/com/microsoft/applicationinsights/smoketestapp/SpringBootApp.java
+++ b/smoke-tests/apps/RuntimeAttach/src/main/java/com/microsoft/applicationinsights/smoketestapp/SpringBootApp.java
@@ -13,6 +13,13 @@
 public class SpringBootApp extends SpringBootServletInitializer {
 
   public static void main(String[] args) {
+    // Pre-load MethodHandle to avoid ClassCircularityError on Java 17 with runtime attach
+    // See https://github.com/open-telemetry/opentelemetry-java-instrumentation/issues/3396
+    try {
+      Class.forName("java.lang.invoke.MethodHandle");
+    } catch (ClassNotFoundException e) {
+      // ignore
+    }
     ApplicationInsights.attach();
     SpringApplication.run(SpringBootApp.class, args);
   }
diff --git a/smoke-tests/apps/RuntimeAttachWithDelayedConnectionString/src/main/java/com/microsoft/applicationinsights/smoketestapp/SpringBootApp.java b/smoke-tests/apps/RuntimeAttachWithDelayedConnectionString/src/main/java/com/microsoft/applicationinsights/smoketestapp/SpringBootApp.java
index 4d1172cfc62..1aa3a17bb6b 100644
--- a/smoke-tests/apps/RuntimeAttachWithDelayedConnectionString/src/main/java/com/microsoft/applicationinsights/smoketestapp/SpringBootApp.java
+++ b/smoke-tests/apps/RuntimeAttachWithDelayedConnectionString/src/main/java/com/microsoft/applicationinsights/smoketestapp/SpringBootApp.java
@@ -16,6 +16,13 @@ public class SpringBootApp extends SpringBootServletInitializer {
   private static final String FAKE_INGESTION_ENDPOINT = "http://host.testcontainers.internal:6060/";
 
   public static void main(String[] args) {
+    // Pre-load MethodHandle to avoid ClassCircularityError on Java 17 with runtime attach
+    // See https://github.com/open-telemetry/opentelemetry-java-instrumentation/issues/3396
+    try {
+      Class.forName("java.lang.invoke.MethodHandle");
+    } catch (ClassNotFoundException e) {
+      // ignore
+    }
     ApplicationInsights.attach();
     ConnectionString.configure(
         "InstrumentationKey=00000000-0000-0000-0000-0FEEDDADBEEF;IngestionEndpoint="