Name: akC57697 Date: 07/10/98


                          
 The FontMetrics.getWidths() crashes JVM for some fonts under
 Solaris 2.6
 
 java: JDK1.2-Beta4K

The example:
------------------------------8-<--------------------------------------------
import com.sun.java.swing.*;
import java.awt.*;

class Test {
  public static void main(String[] argv) {
      FontMetrics fm = null;
      String strings [] ={""," "," ","a","test string"};
      Toolkit t = Toolkit.getDefaultToolkit();

      Font fonts [] = GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts();

     for (int ff=0;ff<fonts.length;ff++) { // Try all fonts
      fm = t.getFontMetrics(fonts[ff]);

      System.out.println("The "+ff+"-th FontMetrics:"+fm);
      System.out.print("The widths:");
      System.out.println(fm.getWidths()); // Call getWidths()
                                           // Call SwingUtilities.computeStringWidth
                                           // for swing testing purposes
      for (int i=0;i<strings.length;i++) {
       System.out.println("StringWidth:"+
                         SwingUtilities.computeStringWidth(fm,strings[i]));
      }
     }
   System.out.println("OKAY");
    
   }
}
---------------------------->-8----------------------------------------------
Solaris 2.6:

...........
The 150-th FontMetrics:sun.awt.font.FontDesignMetrics[font=java.awt.Font[family=LucidaBrightLat2,name=Lucida Bright Lat2 Demi Italic,style=plain,size=1]ascent=1, descent=1, height=3]
The widths:SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_MAPERR [addr: 0x0]

stackpointer=EFFFD5D4

Full thread dump:
    "AWT-Motif" (TID:0xebca7248, sys_thread_t:0x236cf0, state:CW) prio=5
at java.lang.Object.wait(Native Method)
at sun.awt.motif.MToolkit.run(Native Method)
at java.lang.Thread.run(Compiled Code)
    "AWT-Input" (TID:0xebca71b0, sys_thread_t:0x230d30, state:R) prio=5
at java.lang.Object.wait(Native Method)
at sun.awt.motif.InputThread.run(Native Method)
    "AWT-EventQueue-0" (TID:0xebca8150, sys_thread_t:0x2175f0, state:CW) prio=6
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Compiled Code)
at java.awt.EventQueue.getNextEvent(Compiled Code)
at java.awt.EventDispatchThread.run(Compiled Code)
    "Finalizer" (TID:0xebc983a0, sys_thread_t:0x64c10, state:CW) prio=8
at java.lang.Object.wait(Native Method)
at java.lang.ref.ReferenceQueue.remove(Compiled Code)
at java.lang.ref.ReferenceQueue.remove(Compiled Code)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:128)
    "Reference Handler" (TID:0xebc98430, sys_thread_t:0x369d8, state:CW) prio=10
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Compiled Code)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:209)
    "Signal dispatcher" (TID:0xebc982e8, sys_thread_t:0x36d40, state:CW) prio=10
    "main" (TID:0xebc98260, sys_thread_t:0x292f0, state:R) prio=5 *current thread*
at sun.awt.font.NativeFontWrapper.getAdvance(Native Method)
at sun.awt.font.FontDesignMetrics.charWidth(Compiled Code)
at java.awt.FontMetrics.getWidths(Compiled Code)
at Test.main(Compiled Code)
Monitor Cache Dump:
    java.lang.Class@EBCB8158/EBD60E40: owner "main" (0x292f0, 1 entry)
    sun.awt.motif.MToolkit@EBCA8A18/EBD65A80: owner "AWT-Input" (0x230d30, 1 entry)
Waiting to be notified:
"AWT-Motif" (0x236cf0)
Registered Monitor Dump:
    PCMap lock: <unowned>
    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>
    Dynamic loading lock: <unowned>
    Monitor IO lock: <unowned>
    User signal monitor: <unowned>
Waiting to be notified:
"Signal dispatcher" (0x36d40)
    Child death monitor: <unowned>
    I/O monitor: <unowned>
    Alarm monitor: <unowned>
Waiting to be notified:
Internal clock thread (ef7a0c38)
    Thread queue lock: <unowned>
    Monitor registry: owner "main" (0x292f0, 1 entry)
Segmentation Fault (core dumped)

(###@###.###): java -fullversion
java full version "JDK-1.2beta4-K"


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