Name: jl125535 Date: 12/10/2001


java version "1.3.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_01)
Java HotSpot(TM) Client VM (build 1.3.1_01, mixed mode)

(This report also applies to Solaris 8 with both 1.3.1 and 1.4 beta 3.)

Just run the following code
#######################

import java.awt.*;
import java.awt.image.*;
import java.awt.geom.*;

public class TestNaN
{

  public TestNaN()
    {
    GeneralPath path = new GeneralPath();
    path.append(new Line2D.Double(0, 0, 20, 20), true);
    path.append(new Line2D.Double(20, 20, 20, Double.NaN), true);

    try
      {
      BufferedImage image = new BufferedImage(300,300,BufferedImage.TYPE_INT_RGB
);
      Graphics2D g2 = image.createGraphics();

      g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
      System.err.println("draw path");
      g2.draw(path);

      System.err.println("After draw");
      }
    catch (Exception e)
      {
      System.err.println("exception in test NaN");
      }
    }


  public static void main(String[] args)
    {
    TestNaN testNaN1 = new TestNaN();
    }
}

Output

draw path

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 11 occurred at PC=0xeb11b8b8
Function name=Java_sun_dc_pr_PathStroker_finalize
Library=/usr/local/jdk1.3.1_01/jre/lib/sparc/libdcpr.so

Current Java thread:
        at sun.dc.pr.PathFiller.setOutputArea(Native Method)
        at sun.dc.pr.Rasterizer.setOutputArea(Rasterizer.java:635)
        at
sun.java2d.pipe.DuctusShapeRenderer.renderPath(DuctusShapeRenderer.java:77)
        at sun.java2d.pipe.DuctusShapeRenderer.draw(DuctusShapeRenderer.java:48)
        at sun.java2d.pipe.ValidatePipe.draw(ValidatePipe.java:110)
        at sun.java2d.SunGraphics2D.draw(SunGraphics2D.java:1599)
        at TestNaN.<init>(TestNaN.java:21)
        at TestNaN.main(TestNaN.java:34)

Dynamic libraries:
0x10000 /usr/local/jdk1.3/bin/../bin/sparc/native_threads/java
0xef760000 /usr/lib/libthread.so.1
0xef7a0000 /usr/lib/libdl.so.1
0xef680000 /usr/lib/libc.so.1
0xef740000 /usr/platform/SUNW,Ultra-5_10/lib/libc_psr.so.1
0xee880000 /usr/local/jdk1.3.1_01/jre/lib/sparc/client/libjvm.so
0xef620000 /usr/lib/libCrun.so.1
0xef600000 /usr/lib/libsocket.so.1
0xef500000 /usr/lib/libnsl.so.1
0xef5c0000 /usr/lib/libm.so.1
0xef650000 /usr/lib/libw.so.1
0xef4e0000 /usr/lib/libmp.so.2
0xef4b0000 /usr/local/jdk1.3.1_01/jre/lib/sparc/native_threads/libhpi.so
0xef480000 /usr/local/jdk1.3.1_01/jre/lib/sparc/libverify.so
0xef440000 /usr/local/jdk1.3.1_01/jre/lib/sparc/libjava.so
0xeebd0000 /usr/local/jdk1.3.1_01/jre/lib/sparc/libzip.so
0xed7a0000 /usr/local/jdk1.3.1_01/jre/lib/sparc/libawt.so
0xeb180000 /usr/local/jdk1.3.1_01/jre/lib/sparc/motif12/libmawt.so
0xed6b0000 /usr/local/jdk1.3/bin/../jre/lib/sparc/libmlib_image.so
0xe4e00000 /usr/lib/libXm.so.3
0xed590000 /usr/lib/libXt.so.4
0xed4d0000 /usr/lib/libXext.so.0
0xed690000 /usr/openwin/lib/libXtst.so.1
0xeb080000 /usr/lib/libX11.so.4
0xed4b0000 /usr/lib/libSM.so.6
0xed480000 /usr/lib/libICE.so.6
0xe3f00000 /usr/local/jdk1.3.1_01/jre/lib/sparc/libfontmanager.so
0xeb020000 /usr/openwin/lib/libdps.so.5
0xeb110000 /usr/local/jdk1.3.1_01/jre/lib/sparc/libdcpr.so

Local Time = Thu Dec 6 16:05:06 2001
Elapsed Time = 3
#
# The exception above was detected in native code outside the VM
#
# Java VM: Java HotSpot(TM) Client VM (1.3.1_01 mixed mode)
#
Segmentation Fault (core dumped)

This happens only with antialiasing on.

Now, I understand well enough that Double.NaN is a bad number. However, it's a
valid Java primitive - meaning that it is recognized by the system as a valid
double precision number and only additional efforts, i.e. Double.isNaN() can
expose its invalidity. Accordingly Java2D API methods supposed to accept double
arguments should have some reasonable way of dealing with it. The least they
can do is to throw an Exception, even RuntimeException, even Error - something
that alerts to a problem, but keeps the system alive. This is especially
important for app servers - crashing the whole server because of some minor
graphing problem seems to me a disaster. I would like to also point out that
Windows JVM implementaion does not have this problem. There the system just
ignores NaN - and assumes that the coordinate is 0. Not ideal, but much better.
(Review ID: 137080)
======================================================================

Name: rmT116609 Date: 01/04/2002


 DESCRIPTION OF THE PROBLEM :
I found a test case where our program caused the jvm to crash. Testing on solaris with jdk 1.3 and 1.4 as well as windows 2000 jdk 1.3.0 1.3.1_02, jdk 1.4.0-beta3 demonstrated similar badness. Managed to narrow down the data to a few coordinates which will cause the crash.

 This crash only occurs when rendering to an offscreen (BufferedImage) image, and only when antialiasing is on. I have not been able to find other cases which cause this problem, but hopefully the 22 line application included here will help with the debugging effort.

REGRESSION. Last worked in version 1.2.2

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Compile and run the attached program.

EXPECTED VERSUS ACTUAL BEHAVIOR :
Expect it to exit cleanly.
What it does is crap out and dump an error file (see error
messages below).

This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.awt.geom.GeneralPath;

public class Crash {
    public static void main(String args[]) {
        BufferedImage im = new BufferedImage(640, 480, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2d = im.createGraphics();
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        GeneralPath path = new GeneralPath();

        path.moveTo(0.0f, 0.0f);
        path.lineTo(634.2308015993331f, 454.0807311500539f);
        path.lineTo(640.0f, 446.49493394504367f);

        path.closePath();

        g2d.draw(path);
    }
}

Error Message(with JDK1.4.0-beta3):

C:\>java Crash

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x6D135C4C
Function=[Unknown.]
Library=C:\j2sdk1.4.0-beta3\jre\bin\dcpr.dll

NOTE: We are unable to locate the function name symbol for the error
      just occurred. Please refer to release documentation for possible
      reason and solutions.


Current Java thread:
        at sun.dc.pr.PathFiller.setOutputArea(Native Method)
        at sun.dc.pr.Rasterizer.setOutputArea(Rasterizer.java:635)
        at sun.java2d.pipe.DuctusShapeRenderer.renderPath(DuctusShapeRenderer.ja
va:79)
        at sun.java2d.pipe.DuctusShapeRenderer.draw(DuctusShapeRenderer.java:48)

        at sun.java2d.pipe.ValidatePipe.draw(ValidatePipe.java:117)
        at sun.java2d.SunGraphics2D.draw(SunGraphics2D.java:2165)
        at Crash.main(Crash.java:20)

Dynamic libraries:
0x00400000 - 0x00406000 c:\j2sdk1.4.0-beta3\bin\java.exe
0x77F80000 - 0x77FFB000 C:\WINNT\System32\ntdll.dll
0x77DB0000 - 0x77E0B000 C:\WINNT\system32\ADVAPI32.dll
0x77E80000 - 0x77F35000 C:\WINNT\system32\KERNEL32.DLL
0x77D40000 - 0x77DB0000 C:\WINNT\system32\RPCRT4.DLL
0x78000000 - 0x78046000 C:\WINNT\system32\MSVCRT.dll
0x6D330000 - 0x6D441000 c:\j2sdk1.4.0-beta3\jre\bin\client\jvm.dll
0x77E10000 - 0x77E74000 C:\WINNT\system32\USER32.dll
0x77F40000 - 0x77F7C000 C:\WINNT\system32\GDI32.DLL
0x77570000 - 0x775A0000 C:\WINNT\System32\WINMM.dll
0x6D1D0000 - 0x6D1D7000 c:\j2sdk1.4.0-beta3\jre\bin\hpi.dll
0x6D300000 - 0x6D30D000 c:\j2sdk1.4.0-beta3\jre\bin\verify.dll
0x6D210000 - 0x6D227000 c:\j2sdk1.4.0-beta3\jre\bin\java.dll
0x6D320000 - 0x6D32D000 c:\j2sdk1.4.0-beta3\jre\bin\zip.dll
0x6D000000 - 0x6D0F6000 C:\j2sdk1.4.0-beta3\jre\bin\awt.dll
0x77800000 - 0x7781D000 C:\WINNT\System32\WINSPOOL.DRV
0x75E60000 - 0x75E7A000 C:\WINNT\System32\IMM32.dll
0x77A50000 - 0x77B46000 C:\WINNT\system32\ole32.dll
0x6D180000 - 0x6D1D0000 C:\j2sdk1.4.0-beta3\jre\bin\fontmanager.dll
0x6D130000 - 0x6D152000 C:\j2sdk1.4.0-beta3\jre\bin\dcpr.dll
0x77920000 - 0x77943000 C:\WINNT\system32\imagehlp.dll
0x72A00000 - 0x72A2D000 C:\WINNT\system32\DBGHELP.dll
0x690A0000 - 0x690AB000 C:\WINNT\System32\PSAPI.DLL

Local Time = Wed Jan 02 15:19:08 2002
Elapsed Time = 0
#
# The exception above was detected in native code outside the VM
#
# Java VM: Java HotSpot(TM) Client VM (1.4.0-beta3-b84 mixed mode)
#
# An error report file has been saved as hs_err_pid1316.log.
# Please refer to the file for further information.
#

---------- END SOURCE ----------

CUSTOMER WORKAROUND :
Turn off antialiasing...

FULL OPERATING SYSTEM VERSION :
Microsoft Windows 2000 [Version 5.00.2195]

ADDITIONAL OPERATING SYSTEMS :
Solaris:
  uname -a gives:
  SunOS lsucal_05 5.8 Generic_108528-09 sun4u sparc
SUNW,Sun-Fire-280R

Possibly others...
(Review ID: 137949)
======================================================================