duplicate buffer before changing its position.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/com/jogamp/opencl/CLCommandQueue.java b/src/com/jogamp/opencl/CLCommandQueue.java
index dc954a4a..67b07171 100644
--- a/src/com/jogamp/opencl/CLCommandQueue.java
+++ b/src/com/jogamp/opencl/CLCommandQueue.java
@@ -1350,7 +1350,7 @@ public class CLCommandQueue extends CLObject implements CLResource {
      */
     public CLCommandQueue putWaitForEvent(CLEventList list, int index, boolean blockingWait) {
 
-        PointerBuffer ids = PointerBuffer.wrap(list.IDs.getBuffer()).position(index);
+        PointerBuffer ids = PointerBuffer.wrap(list.IDs.getBuffer().duplicate()).position(index);
         
         int ret = blockingWait ? cl.clWaitForEvents(1, ids)
                                : cl.clEnqueueWaitForEvents(ID, 1, ids);