hotspot terminates at assert during GC in java_g

A customer reproted Hotspot crash at assert function in java_g command during GC.

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# Internal Error (C:/BUILD_AREA/jdk1.5.0_03/hotspot\src\share\vm\memory\genOopClosures.inline.hpp, 69), pid=2908, tid=2280
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_03-b07-debug mixed mode)
#
# Error: assert(!_g->to()->contains(obj),"Scanning field twice?")

CONFIGURATION :
 JRE : 1.4.2_08/5.0u3
 OS : Windows 2003 server


REPRODUCE :
 Launch the command line.
   java_g -cp .;csmjaxp.jar TEST1 TEST1.xml TEST1.xsd

NOTE:
 Several hours is needed to reproduce.