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  1. JDK
  2. JDK-8275328

C2: assert(n->outcnt() != 0 || C->top() == n || n->is_Proj()) failed: No dead instructions after post-alloc

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: 18
    • Fix Version/s: 18
    • Component/s: hotspot
    • Labels:

      Description

      (synopsis is provisional, feel free to change it or close as duplicate of known bug)

      Attached Fuzzer test fails like:

      $ ../build/linux-x86_64-server-fastdebug/images/jdk/bin/java -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM -XX:+StressCCP -Xcomp -XX:CompileOnly=Test -XX:-TieredCompilation -XX:StressSeed=84360828 Test

      # A fatal error has been detected by the Java Runtime Environment:
      #
      # Internal Error (/home/shade/trunks/jdk/src/hotspot/share/opto/chaitin.cpp:1670), pid=3439441, tid=3439454
      # assert(n->outcnt() != 0 || C->top() == n || n->is_Proj()) failed: No dead instructions after post-alloc

      Bisection shows it started with JDK-8273612, but that might only be because the profiling info had changed a bit.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              shade Aleksey Shipilev
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                Updated:
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