Bug ID: JDK-6259344 PIT: DnD testcase resulting in VM crash

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JDK 6
6 b53Fixed

This occurs only with b35 AWT PIT build. 

java -version
java version "1.6.0-awt.pit-int-jcg-win-03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-awt.pit-int-jcg-win-03-java2d_19_apr_2005_08_17)
Java HotSpot(TM) Client VM (build 1.6.0-ea-b32, mixed mode)

Running the attached automated testcase results in VM crash on WinXP system. The testcase runs fine on b32. 

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00000001, pid=576, tid=1744
#
# Java VM: Java HotSpot(TM) Client VM (1.6.0-ea-b32 mixed mode)
# Problematic frame:
# C  0x00000001
#
# An error report file with more information is saved as hs_err_pid576.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#

Attached is the crash log.

###@###.### 2005-04-21 13:20:26 GMT

EVALUATION We should use TRY_NO_HANG macros instead of TRY_NO_VERIFY. TRY_NO_HANG verifies that Toolkit is still active overwise returns us to Java immediately.
05-09-2005
SUGGESTED FIX ------- awt_DnDDT.cpp ------- * /tmp/sccs.mre01d Mon Sep 5 15:01:48 2005 --- awt_DnDDT.cpp Mon Sep 5 14:40:50 2005 *********** * 1322,1328 **** JNIEXPORT void JNICALL Java_sun_awt_windows_WDropTargetContextPeer_dropDone(JNIEnv* env, jobject self, jlong dropTarget, jboolean success, jint actions) { ! TRY_NO_VERIFY; AwtDropTarget* pDropTarget = (AwtDropTarget)dropTarget; --- 1322,1328 ---- JNIEXPORT void JNICALL Java_sun_awt_windows_WDropTargetContextPeer_dropDone(JNIEnv env, jobject self, jlong dropTarget, jboolean success, jint actions) { ! TRY_NO_HANG; AwtDropTarget* pDropTarget = (AwtDropTarget*)dropTarget;
05-09-2005
EVALUATION I have added debug print in DropTaget destructor. Looks like AwtDropTarget had destructed before last invocation was made. The invocation of DropTarget->DropDone() brought us to the exception. Z:\bugs\6259344>J:\bin\java.exe bug_4710511 Test passed! AwtDropTarget was distracted.# # An unexpected error has been detected by HotSpot Virtual Machine: # # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00000001, pid=864, tid=732 # # Java VM: Java HotSpot(TM) Client VM (1.6.0-ea-b43 mixed mode) # Problematic frame: # C 0x00000001 # # An error report file with more information is saved as hs_err_pid864.log # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp #
02-09-2005
EVALUATION The problem is difficult to reproduce. I could reproduce the problem ones or twice. After it I should reboot PC. Looks like the root of the issue is DropDonePtr structure.
01-09-2005
WORK AROUND Inserting some delay between last robot.mouseRelease() and System.exit() eliminates the problem. ###@###.### 2005-06-20 09:27:45 GMT
20-06-2005
EVALUATION The crash always happens while system is shutdowning, i. e. after the test had passed and System.exit(...) has been called. The problem is probably that we are trying to access some of the native objects from WDropTargetContextPeer.dropDone() and in the same time are disposing them from another thread. Some synchronization should be added (AwtToolkit::SyncCall or something like that). ###@###.### 2005-06-17 08:17:55 GMT
17-06-2005
SUGGESTED FIX ###@###.### 2005-06-20 09:27:45 GMT
17-06-2005

Relates :	JDK-6259348 - PIT: ZOrder testcase resulting in VM crash
Relates :	JDK-6796253 - AWT: bug_4710511 fails with crash