JDK-6994630 : java/lang/instrument/IsModifiableClassAgent.java fails with -XX:+EnableInvokeDynamic
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs20
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2010-10-25
  • Updated: 2012-02-01
  • Resolved: 2011-03-08
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JDK 6 JDK 7 Other
6u25Fixed 7Fixed hs20Fixed
Description
Please see comments.
Comments
EVALUATION http://hg.openjdk.java.net/jdk7/build/hotspot/rev/d2e35ffae982
04-12-2010
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/d2e35ffae982
28-10-2010
SUGGESTED FIX The fix is to also check for the field with the already changed signature. *** (#1 of 1): [ UNSAVED ] ###@###.###
27-10-2010
EVALUATION There is a problem with the logic of ClassFileParser::java_dyn_MethodHandle_fix_pre. The method searches for a field called "vmentry" with the signature "byte". The signature of the field is then changed to vmSymbols::machine_word_signature() to hold an unmanged pointer. When the method is called again the field's signature is already changed and it throws a VirtualMachineError resulting in a VerifyError.
27-10-2010