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  1. JDK
  2. JDK-8258243

C2: assert failed ("Bad derived pointer") with -XX:+VerifyRegisterAllocator

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    • Subcomponent:
    • Resolved In Build:
      b05
    • CPU:
      generic
    • OS:
      generic

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        Description

        When using -XX:+VerifyRegisterAllocator, C2 crashes with:

        assert(!is_derived || check->bottom_type()->is_ptr()->ptr() == TypePtr::Null) failed: Bad derived pointer

        for the following tests, executed with the additional VM options "-Xcomp -XX:-TieredCompilation" and one of "-XX:-DoEscapeAnalysis" or "-XX:+DeoptimizeALot":

        gc/stress/jfr/TestStressAllocationGCEventsWithDefNew.java
        gc/stress/jfr/TestStressAllocationGCEventsWithG1.java
        gc/stress/jfr/TestStressAllocationGCEventsWithParallel.java
        gc/stress/jfr/TestStressBigAllocationGCEventsWithDefNew.java
        gc/stress/jfr/TestStressBigAllocationGCEventsWithParallel.java
        runtime/cds/appcds/CDSandJFR.java
        runtime/cds/appcds/customLoader/HelloCustom_JFR.java
        runtime/cds/appcds/jigsaw/modulepath/ModulePathAndCP_JFR.java
        runtime/cds/appcds/sharedStrings/FlagCombo.java#id0

        For example, to reproduce the problem on runtime/cds/appcds/customLoader/HelloCustom_JFR.java, run:

        make run-test TEST="runtime/cds/appcds/customLoader/HelloCustom_JFR.java" TEST_VM_OPTS="-XX:+VerifyRegisterAllocator -Xcomp -XX:-TieredCompilation -XX:-DoEscapeAnalysis"

        The problem is observed on linux-x64, macosx-x64, and windows-x64 (fastdebug configuration).

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                Assignee:
                chagedorn Christian Hagedorn
                Reporter:
                rcastanedalo Roberto Castaneda Lozano
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                  Updated:
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