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  1. JDK
  2. JDK-8226810

Failed to launch JVM because of NullPointerException occured on System.props

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    • Subcomponent:
    • Resolved In Build:
      b05
    • CPU:
      x86_64
    • OS:
      windows_10

      Backports

        Description

        ADDITIONAL SYSTEM INFORMATION :
        OS: Windows10 1607 (internal version 14393.2430)
        Java: 12.0.1, extracted from the official release package jdk-12.0.1_windows-x64_bin.zip.

        A DESCRIPTION OF THE PROBLEM :
        Try to launch the JVM on windows10, with command line "java -version"; and it failed due to NullPointerException on java.base/java.lang.System.props, with the following stacks:

        Error occurred during initialization of VM
        java.lang.NullPointerException
                at java.lang.System.getProperty(java.base/System.java:848)
                at sun.security.action.GetPropertyAction.privilegedGetProperty(java.base/GetPropertyAction.java:105)
                at java.nio.charset.Charset.defaultCharset(java.base/Charset.java:607)
                at java.lang.StringCoding.decode(java.base/StringCoding.java:316)
                at java.lang.String.<init>(java.base/String.java:601)
                at java.lang.String.<init>(java.base/String.java:623)
                at jdk.internal.util.SystemProps$Raw.vmProperties(java.base/Native Method)
                at jdk.internal.util.SystemProps$Raw.cmdProperties(java.base/SystemProps.java:261)
                at jdk.internal.util.SystemProps.initProperties(java.base/SystemProps.java:55)
                at java.lang.System.initPhase1(java.base/System.java:1997)

        I've checked the source of System.java. It seems that the implementation is not accordant with the following comments:
            /**
             * Initialize the system class. Called after thread initialization.
             */
            private static void initPhase1() {
                // VM might invoke JNU_NewStringPlatform() to set those encoding
                // sensitive properties (user.home, user.name, boot.class.path, etc.)
                // during "props" initialization.
                // The charset is initialized in System.c and does not depend on the Properties.
                Map<String, String> tempProps = SystemProps.initProperties();
                VersionProps.init(tempProps);

                // There are certain system configurations that may be controlled by
                // VM options such as the maximum amount of direct memory and
                // Integer cache size used to support the object identity semantics
                // of autoboxing. Typically, the library will obtain these values
                // from the properties set by the VM. If the properties are for
                // internal implementation use only, these properties should be
                // masked from the system properties.
                //
                // Save a private copy of the system properties object that
                // can only be accessed by the internal implementation.
                VM.saveProperties(tempProps);
                props = createProperties(tempProps);
                ........

        STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
        executing cmd: java -version

        EXPECTED VERSUS ACTUAL BEHAVIOR :
        EXPECTED -
        JVM launched, and show the correct version info.
        ACTUAL -
        NullPointException occured.

        FREQUENCY : always


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                Assignee:
                ewhelan Evan Whelan
                Reporter:
                webbuggrp Webbug Group
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                  Updated:
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