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  1. JDK
  2. JDK-8237894

CTW: C1 compilation fails with assert(x->type()->tag() == f->type()->tag()) failed: should have same type

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    • Subcomponent:
    • Resolved In Build:
      b16

      Description

      # Internal Error (/home/shade/trunks/jdk-jdk/src/hotspot/share/c1/c1_ValueMap.cpp:128), pid=21330, tid=21350
      # assert(x->type()->tag() == f->type()->tag()) failed: should have same type
      #
      # JRE version: OpenJDK Runtime Environment (15.0) (fastdebug build 15-internal+0-adhoc.shade.jdk-jdk)
      # Java VM: OpenJDK 64-Bit Server VM (fastdebug 15-internal+0-adhoc.shade.jdk-jdk, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-amd64)
      # Problematic frame:
      # V [libjvm.so+0x6e2fd8] ValueMap::find_insert(Instruction*)+0x188

      Steps to reproduce:

      $ cd test/hotspot/jtreg/testlibrary/ctw
      $ make
      $ cd dist
      <download attached JAR>
      $ ./ctw.sh test.jar

      test.jar contains the example class.

      This is the debug log before the crash: GVN thinks LoadIndexed(int) equals to LoadIndexed(long).

      $ JAVA_OPTIONS="-XX:+PrintValueNumbering -XX:CICompilerCount=2" ./ctw.sh ~/Desktop/test.jar
      Value Numbering: LoadIndexed i43 equal to l20 (size 11, entries 6, nesting-diff 2)

      Larger CTW runs identify similar crash in these methods:
        com.android.ide.common.resources.LocaleManager::getLanguageCodes
        com.google.common.primitives.UnsignedLongs::overflowInParse
        com.google.protobuf.MessageReflection::mergeFieldFrom
        edu.stanford.nlp.process.PTBEscapingProcessor::unprocess
        org.netbeans.modules.schema2beans.AttrProp::toString
        org.apache.xerces.jaxp.datatype.XMLGregorianCalendarImpl::checkFieldValueConstraint
        org.aspectj.weaver.bcel.LazyMethodGen$BodyPrinter::printInstruction
        org.sonar.sslr.internal.matchers.TextUtils::escape
        org.streaminer.stream.membership.BloomCalculations::computeBucketsAndK

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            • Assignee:
              jcm Jamsheed C M
              Reporter:
              shade Aleksey Shipilev
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              • Created:
                Updated:
                Resolved: