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  1. JDK
  2. JDK-6898462

The escape analysis with G1 cause crash assertion src/share/vm/runtime/vframeArray.cpp:94

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    • b44
    • x86
    • generic

        See example in attachment. I tested it on my solaris-i586 for JDK7b74.

        Here is run string:
        /net/vmsqe.russia/export/jdk/re/7/promoted/ea/b74/binaries/solaris-i586/fastdebug/bin/java -server -Xmixed -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -Xmx8M -XX:+DoEscapeAnalysis -cp /export/home/lm153972/NetBeansProjects/Tests/build/classes tests.Main

        Here is the result for product:
        should not reach here
        final
        Exception in thread "main" java.lang.NullPointerException
        at tests.Main.eatMemory(Main.java:40)
        at tests.Main.main(Main.java:71)


        Here is the result (for fastdebug):
        # To suppress the following error report, specify this argument
        # after -XX: or in .hotspotrc: SuppressErrorAt=/vframeArray.cpp:94
        #
        # A fatal error has been detected by the Java Runtime Environment:
        #
        # Internal Error (/BUILD_AREA/jdk7/hotspot/src/share/vm/runtime/vframeArray.cpp:94), pid=2482, tid=2
        # Error: assert(!value->obj_is_scalar_replaced(),"object should be reallocated already")
        #
        # JRE version: 7.0-b74
        # Java VM: Java HotSpot(TM) Server VM (17.0-b03-fastdebug mixed mode solaris-x86 )
        # An error report file with more information is saved as:
        # /export/home/lm153972/NetBeansProjects/testbase/vm/ant-build/hs_err_pid2482.log
        #
        # If you would like to submit a bug report, please visit:
        # http://java.sun.com/webapps/bugreport/crash.jsp
        #
        Current thread is 2
        Dumping core ...
        Abort (core dumped)

        These tests fails due this issue (they are not excluded from tun):

        nsk/monitoring/stress/classload/unload001
        nsk/monitoring/stress/classload/unload002
        nsk/monitoring/stress/classload/unload003
        nsk/monitoring/stress/classload/unload004
        nsk/monitoring/stress/classload/unload005
        nsk/monitoring/stress/classload/unload006
        nsk/monitoring/stress/classload/unload007
        nsk/monitoring/stress/classload/unload008
        nsk/monitoring/stress/classload/unload009
        nsk/monitoring/stress/classload/unload010
        nsk/monitoring/stress/classload/unload011
        nsk/monitoring/stress/classload/unload012
        Also these:-

        gc/gctests/LargeObjects/large001/large001
        gc/gctests/LargeObjects/large003
        gc/gctests/LargeObjects/large004
        gc/gctests/LargeObjects/large005
        Also fails

        gc/gctests/Steal/steal001

              roland Roland Westrelin
              lmesnik Leonid Mesnik
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