Improve error message.

raphw · Mar 4, 2024 · ddc7698 · ddc7698
1 parent 3b4ed21
commit ddc7698
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/byte-buddy-agent/src/main/java/net/bytebuddy/agent/ByteBuddyAgent.java b/byte-buddy-agent/src/main/java/net/bytebuddy/agent/ByteBuddyAgent.java
@@ -703,7 +703,9 @@ private static void installExternal(AttachmentProvider.Accessor.ExternalAttachme
                     agent.getAbsolutePath(),
                     Boolean.toString(isNative),
                     argument == null ? "" : (AGENT_ARGUMENT_SEPARATOR + argument)).start().waitFor() != SUCCESSFUL_ATTACH) {
-                throw new IllegalStateException("Could not self-attach to current VM using external process");
+                throw new IllegalStateException("Could not self-attach to current VM using external process - set a property "
+                        + Attacher.DUMP_PROPERTY
+                        + " to dump the process output to a file at the specified location");
             }
         } finally {
             if (attachmentJar != null) {