Andrea Vacondio created PDFBOX-3660:
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             Summary: Handling of invalid annotation border
                 Key: PDFBOX-3660
                 URL: https://issues.apache.org/jira/browse/PDFBOX-3660
             Project: PDFBox
          Issue Type: Improvement
          Components: Rendering
    Affects Versions: 2.0.4
         Environment: Latest in branch 2.0
            Reporter: Andrea Vacondio
            Priority: Minor


We came across a doc where a link annotation border was set to an array of one 
element [0], maybe PDAnnotation::getBorder should check the array instance has 
a valid size too. 
{code}
java.lang.RuntimeException: java.util.concurrent.ExecutionException: 
java.lang.IndexOutOfBoundsException: Index: 2, Size: 1
    
org.apache.pdfbox.debugger.pagepane.PagePane$RenderWorker.done(PagePane.java:258)
    sun.swing.AccumulativeRunnable.run(AccumulativeRunnable.java:112)
    java.security.AccessController.doPrivileged(Native Method)
    
java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
Caused by: java.util.concurrent.ExecutionException: 
java.lang.IndexOutOfBoundsException: Index: 2, Size: 1
    
org.apache.pdfbox.debugger.pagepane.PagePane$RenderWorker.done(PagePane.java:247)
    sun.swing.AccumulativeRunnable.run(AccumulativeRunnable.java:112)
    java.security.AccessController.doPrivileged(Native Method)
    
java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 1
    java.util.ArrayList.rangeCheck(ArrayList.java:653)
    java.util.ArrayList.get(ArrayList.java:429)
    org.apache.pdfbox.cos.COSArray.get(COSArray.java:210)
    
org.apache.pdfbox.rendering.PageDrawer.getAnnotationBorder(PageDrawer.java:1110)
    
org.apache.pdfbox.rendering.PageDrawer.drawAnnotationLinkBorder(PageDrawer.java:1162)
    org.apache.pdfbox.rendering.PageDrawer.showAnnotation(PageDrawer.java:1083)
    org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:198)
    org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:145)
    org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:68)
    
org.apache.pdfbox.debugger.pagepane.PagePane$RenderWorker.doInBackground(PagePane.java:236)
    
org.apache.pdfbox.debugger.pagepane.PagePane$RenderWorker.doInBackground(PagePane.java:1)
    java.lang.Thread.run(Thread.java:745)
{code}



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