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Date: Sat, 16 Apr 2005 23:02:00 -0000
From: "bothner at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: java-prs@gcc.gnu.org
Message-ID: <20050416230239.21064.bothner@gcc.gnu.org>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug SWING/21064] New: StyleContext.addStyle causes NullPointerException
X-Bugzilla-Reason: CC
X-SW-Source: 2005-q2/txt/msg00153.txt.bz2
List-Id: <java-prs.sourceware.org>

The (to-be-shortly) attached testcase (which works with JDK 1.4.x)
causes a NullPointerException:

$ gcj -o SwStyle SwStyle.java --main=SwStyle -g
$ ./SwStyle
Exception in thread "main" java.lang.ExceptionInInitializerError
   at java.lang.Class.initializeClass()
(/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
   at SwStyle.main(java.lang.String[]) (/tmp/SwStyle.java:12)
   at gnu.java.lang.MainThread.call_main()
(/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
   at gnu.java.lang.MainThread.run()
(/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
Caused by: java.lang.NullPointerException
   at java.util.Hashtable.put(java.lang.Object, java.lang.Object)
(/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
   at javax.swing.text.SimpleAttributeSet.addAttribute(java.lang.Object,
java.lang.Object) (/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
   at javax.swing.text.StyleContext.addAttribute(javax.swing.text.AttributeSet,
java.lang.Object, java.lang.Object)
(/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
   at
javax.swing.text.StyleContext$NamedStyle.setResolveParent(javax.swing.text.AttributeSet)
(/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
   at
javax.swing.text.StyleContext$NamedStyle.StyleContext$NamedStyle(javax.swing.text.StyleContext,
java.lang.String, javax.swing.text.Style)
(/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
   at javax.swing.text.StyleContext.addStyle(java.lang.String,
javax.swing.text.Style) (/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
   at SwStyle.<clinit>() (/tmp/SwStyle.java:8)
   at java.lang.Class.initializeClass()
(/home/bothner/GNU/install-gcc-4.0/lib/libgcj.so.6.0.0)
   ...3 more

This is using the gcc-4.0 branch; I haven't tested head.

(This testcase is simplified from JEmacs.)

-- 
           Summary: StyleContext.addStyle causes NullPointerException
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: SWING
        AssignedTo: graydon at redhat dot com
        ReportedBy: bothner at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
                    dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21064