From a3540be502ef2f93c0fdc3fb2496c29ae7c8b041 Mon Sep 17 00:00:00 2001
From: Alex Menkov <amenkov@openjdk.org>
Date: Tue, 18 Mar 2025 17:59:01 +0000
Subject: [PATCH] 8352163: [AIX] SIGILL in
 AttachOperation::ReplyWriter::write_fully after 8319055

Reviewed-by: dholmes, mdoerr
---
 src/hotspot/share/services/attachListener.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/hotspot/share/services/attachListener.cpp b/src/hotspot/share/services/attachListener.cpp
index e3a6a034935..b57e357e897 100644
--- a/src/hotspot/share/services/attachListener.cpp
+++ b/src/hotspot/share/services/attachListener.cpp
@@ -127,9 +127,11 @@ public:
   // Called after the operation is completed.
   // If reply_writer is provided, writes the results.
   void complete() {
-    JavaThread* thread = JavaThread::current();
-    ThreadBlockInVM tbivm(thread);
-    flush_reply();
+    if (_reply_writer != nullptr) {
+      JavaThread* thread = JavaThread::current();
+      ThreadBlockInVM tbivm(thread);
+      flush_reply();
+    }
   }
 
   virtual void write(const char* str, size_t len) override {