Name: kaC94536 Date: 08/08/2000



java version "1.3.0rc1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc1-b13)
Java HotSpot(TM) Client VM (build 1.3.0rc1-b11, mixed mode)

The following HW was used:
Intel Pentium III Xeon 550MHz(512 Kb) (4) / 256 Mb /
HDD IBM DNES-309170SCA 9.1 Gb UWSCSI /
CD-ROM drive SONY CDU4821 48X IDE

The following OS was used:
Caldera OpenLinux

The crash takes place not every time (3 of 10).
The following test shows the crash:

//--------------------------- test.java ------------------------------//

import java.awt.font.LineBreakMeasurer;
import java.text.AttributedString;
import java.awt.font.FontRenderContext;
import java.awt.geom.AffineTransform;
import java.text.AttributedCharacterIterator;
import java.text.BreakIterator;

public class test {
    
  public static void main(String args[]) {

    AttributedCharacterIterator text = (new AttributedString("")).getIterator();
    BreakIterator breakIter = BreakIterator.getLineInstance();
    FontRenderContext frc = new FontRenderContext(new AffineTransform(), true, true);

    try {
        new LineBreakMeasurer(text, breakIter, frc);
    } catch(IllegalArgumentException exc) {}
  }
}

------------------------------------- output for classic VM --------------------------------------

linux-6$ java -classic test
SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Success
    si_code [0]: SI_USER [pid: 0, uid: 0]
        stackpointer=0x7fffcf6c

Full thread dump Classic VM (1.3.0rc1-b13, green threads):
    "Finalizer" (TID:0x2ba19528, sys_thread_t:0x80c7cf8, state:CW) prio=8
        at java.lang.Object.wait(Native Method)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:108)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:123)
        at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:162)
    "Reference Handler" (TID:0x2ba19300, sys_thread_t:0x80c2e08, state:CW) prio=10
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:420)
        at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:110)
    "Signal dispatcher" (TID:0x2ba19330, sys_thread_t:0x80bfbc8, state:CW) prio=5
    "main" (TID:0x2ba191a0, sys_thread_t:0x804d950, state:R) prio=5
        at sun.awt.font.NativeFontWrapper.canDisplay(Native Method)
        at java.awt.Font.canDisplay(Font.java:1105)
        at sun.java2d.SunGraphicsEnvironment.getBestFontFor(SunGraphicsEnvironment.java:566)
        at java.awt.font.TextLine$ACIFontSource.getBestFontAt(TextLine.java:765) at java.awt.font.TextLine.getComponents(TextLine.java:891)
        at java.awt.font.TextMeasurer.generateComponents(TextMeasurer.java:154)
        at java.awt.font.TextMeasurer.initAll(TextMeasurer.java:129)
        at java.awt.font.TextMeasurer.<init>(TextMeasurer.java:92)
        at java.awt.font.LineBreakMeasurer.<init>(LineBreakMeasurer.java:285)
        at test.main(test.java:17)
Monitor Cache Dump:
    java.lang.ref.ReferenceQueue$Lock@2BA19540/2BA4F3F0: <unowned>
        Waiting to be notified:
            "Finalizer" (0x80c7cf8)
    java.lang.ref.Reference$Lock@2BA19310/2BA4EF10: <unowned>
        Waiting to be notified:
            "Reference Handler" (0x80c2e08)
    java.lang.Class@2BA26818/2BA8A678: owner "main" (0x804d950) 1 entry
Registered Monitor Dump:
    utf8 hash table: <unowned>
    JNI pinning lock: <unowned>
    JNI global reference lock: <unowned>
    BinClass lock: <unowned>
    Class linking lock: <unowned>
    System class loader lock: <unowned>
    Code rewrite lock: <unowned>
    Heap lock: <unowned>
    Monitor cache lock: owner "main" (0x804d950) 1 entry
    Dynamic loading lock: <unowned>
    Monitor IO lock: <unowned>
    User signal monitor: <unowned>
        Waiting to be notified:
            "Signal dispatcher" (0x80bfbc8)
    Child death monitor: <unowned>
    I/O monitor: <unowned>
    Alarm monitor: <unowned>
        Waiting to be notified:
            <unknown thread> (0x8058db8)
    Thread queue lock: owner "main" (0x804d950) 1 entry
    Monitor registry: owner "main" (0x804d950) 1 entry

------------------------------------- output for client HS VM --------------------------------------

linux-6$ java test
# # An unexpected exception has been detected in native code outside the VM.# Program counter=0x337dba1b
#
# Problematic Thread: prio=1 tid=0x804e5b8 nid=0x4d60 runnable
#
Aborted

The following JCK tet fails due to this bug:
api/java_awt/java2d/font/LineBreakMeasurer/index.html

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