JDK-6986270 : guarantee(*bcp != Bytecodes::_monitorenter || exec_mode != Deoptimization::Unpack_exception) fails
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs20
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2010-09-21
  • Updated: 2011-03-08
  • Resolved: 2011-03-08
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JDK 6 JDK 7 Other
6u25Fixed 7Fixed hs20Fixed
Description
A number of jck tests failed in nightly testing the DeoptimizeALot and TieredCompilation with:

#  Internal Error (/tmp/jprt/P1/B/235533.kvn/source/src/share/vm/runtime/vframeArray.cpp:184), pid=9123, tid=2
#  guarantee(*bcp != Bytecodes::_monitorenter || exec_mode != Deoptimization::Unpack_exception) failed: shouldn't get exception during monitorenter
Comments
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/fd5d4527cdf5
09-10-2010
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/fd5d4527cdf5
22-09-2010
EVALUATION This guarantee should hold true for C2 but is not necessarily true for C1. The fix would be to propagate the compiler type of the deopting method to vframeArrayElement::unpack_on_stack() and apply the guarantee only to c2-compiled methods.
21-09-2010