J2SE Version (please include all output from java -version flag):
  1.5.0_06-b04

Does this problem occur on J2SE 1.4.x or 5.0.x ?
  Yes

Operating System Configuration Information (be specific):
  64-bit Windows 2003 Ent.

Hardware Configuration Information (be specific):
  Board: Tyan 2882-D
  Memory: 8X 1G
  Proc: 2X Opteron 880

Bug Description:
  -XX:+UseBiasedLocking causes the 64bit VM (1.5.0 update 6) to spew out
  the following error.

Error:
#
# C:\jbb2005>c:\java\SUN64\bin\java –fullversion
# Java full version "1.5.0_06-b04"
# Using CLASSPATH entries:
# .\jbb.jar
# .\check.jar
#
# C:\jbb2005>c:\java\SUN64\bin\java -server -Xmn2457m -Xms3686m -Xmx3686m -Xss256k -XX:+UseParallelGC -XX:+UseParallelOldGC -XX:+UseBiasedLocking -XX:+AggressiveOpts spec.jbb.JBBmain -propfile SPECjbb.props

# Exception in thread "main" java.lang.NullPointerException
# at java.util.HashMap.addEntry(HashMap.java:743)
# at java.util.HashMap.put(HashMap.java:395)
# at sun.security.util.ManifestDigester.<init>(ManifestDigester.java:152)
# at java.util.jar.JarVerifier.processEntry(JarVerifier.java:249)
# at java.util.jar.JarVerifier.update(JarVerifier.java:188)
# at java.util.jar.JarFile.initializeVerifier(JarFile.java:320)
# at java.util.jar.JarFile.getInputStream(JarFile.java:385)
# at sun.misc.URLClassPath$JarLoader$1.getInputStream(URLClassPath.java:620)
# at sun.misc.Resource.cachedInputStream(Resource.java:58)
# at sun.misc.Resource.getByteBuffer(Resource.java:113)
# at java.net.URLClassLoader.defineClass(URLClassLoader.java:249)
# at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
# at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
# at java.security.AccessController.doPrivileged(Native Method)
# at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
# at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
# at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
# at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
# at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)


Steps to Reproduce (be specific):
  try the command line - use the -XX:+UseBiasedLocking option on a 64bitOS using Opteron.
 e.g - java -server -Xmn2457m -Xms3686m -Xmx3686m -Xss256k -XX:+UseParallelGC -XX:+UseParallelOldGC -XX:+UseBiasedLocking -XX:+AggressiveOpts spec.jbb.JBBmain -propfile SPECjbb.props