SIGSEGV during reshape

1) start up webrunner at http://town.hall.org/patent/patent.html
2) select the first link on the page - "Search Patent Database"
3) go back to previous page using GoBack button.
4) reshape window.

You should get this message:



SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_ACCERR [addr: 0x14]

stackbase=402890, stackpointer=400BB8

Full thread dump:
    "Thread-12" (0x2cd470): priority=4
oak.lang.Object.wait(Object.oak)
awt.DIWChildUpdater.getNextClient(DisplayItemWindow.oak:468)
awt.DIWChildUpdater.run(DisplayItemWindow.oak:489)
    "Thread-3" (0x2c0d38): priority=4
oak.lang.Object.wait(Object.oak)
awt.DIWChildUpdater.getNextClient(DisplayItemWindow.oak:468)
awt.DIWChildUpdater.run(DisplayItemWindow.oak:489)
    "Thread-1" (0x2beb90): priority=5
webrunner.StatusWindow.run(webrunner.oak:366)
oak.lang.Thread.run(Thread.oak)
    "Background Image Reader" (0x2be6f0): priority=2
oak.lang.Object.wait(Object.oak)
webrunner.ImageReader.waitForRequest(ImageReader.oak:56)
webrunner.ImageReader.run(ImageReader.oak:114)
    "AWT WServer Thread" (0x2bde10): priority=5 *current thread*
awt.TextField.reshape(TextField.oak:47)
awt.FlowLayout.layout(FlowLayout.oak:145)
awt.DisplayItemWindow.handleResize(DisplayItemWindow.oak:53)
awt.Window.reshape(Window.oak:196)
awt.BorderLayout.layout(BorderLayout.oak:141)
awt.Container.layout(Container.oak:157)
awt.Frame.resize(Frame.oak:41)
    "Async Garbage Collector" (0x2bdb38): priority=1
    "Idle thread" (0x2bdae0): priority=0
    "clock handler" (0x2bdad0): priority=11
    "main" (0x2bdac8): priority=5

[Tim: Fri Dec 9 09:53:58 PST 1994]

Trying this just now I don't get a SEGV, but each time get a pair of exceptions:

Exception in thread "AWT WServer Thread" oak.lang.NullPointerException
at awt.TextField.reshape(TextField.oak:57)
at awt.FlowLayout.layout(FlowLayout.oak:155)
at awt.DisplayItemWindow.handleResize(DisplayItemWindow.oak:66)
at awt.Window.reshape(Window.oak:206)
at awt.BorderLayout.layout(BorderLayout.oak:152)
at awt.Container.layout(Container.oak:167)
at awt.Frame.resize(Frame.oak:51)
Exception in thread "AWT WServer Thread" oak.lang.NullPointerException
at awt.TextField.reshape(TextField.oak:57)
at awt.FlowLayout.layout(FlowLayout.oak:155)
at awt.Container.layout(Container.oak:167)
at awt.Window.reshape(Window.oak:207)
at awt.BorderLayout.layout(BorderLayout.oak:152)
at awt.Container.layout(Container.oak:167)
at awt.Frame.resize(Frame.oak:51)

The description field as copied from bug report 1184381 follows:

1) start up webrunner.
2) in "Document URL" text field type "http://cwis.usc.edu/dept/raiders/"
3) now position your cursor to the bottom-right resize handle of the window.
4) type return
5) resize the window; keep doing it until it crashes or the "NullPointerException"
    message is displayed.
6) if it didn't crash goto (1)





oak.lang.NullPointerException
at oak.io.BufferedInputStream.read(BufferedInputStream.oak:64)
at webrunner.AdvertizingWindow.run(AdvertizingWindow.oak:130)
at oak.lang.Thread.run(Thread.oak:194)
Opening stream to: URL[protocol=file, host=~webrunner, file=/demo/AudioItem.class] to get AudioItem
Opening stream to: URL[protocol=file, host=~webrunner, file=/demo/classes/AudioItem.class] to get AudioItem
SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_ACCERR [addr: 0x14]

stackbase=404208, stackpointer=402558

Full thread dump:
    "Thread-41" (0x2d7858): priority=3
net.SocketInputStream.read(SocketInputStream.oak:35)
oak.io.BufferedInputStream.read(BufferedInputStream.oak:64)
oak.io.DataInputStream.readLine(DataInputStream.oak)
net.www.http.HttpClient.processRequest(HttpClient.oak:148)
net.www.http.HttpClient.get(HttpClient.oak:142)
net.www.http.HttpClient.<init>(HttpClient.oak:204)
net.www.html.httpHandler.openStream(httpHandler.oak:28)
net.www.html.URL.openStream(URL.oak:309)
webrunner.DocumentInfo.fetch(DocumentInfo.oak:77)
webrunner.FetcherThread.run(DocumentManager.oak:136)
    "Thread-40" (0x2d4d68): priority=4
oak.lang.Object.wait(Object.oak:124)
awt.DIWChildUpdater.getNextClient(DisplayItemWindow.oak:468)
awt.DIWChildUpdater.run(DisplayItemWindow.oak:489)
    "Thread-12" (0x2cadf8): priority=10
oak.lang.Object.wait(Object.oak:124)
webrunner.audio.AudioPlayer.waitForData(AudioPlayer.oak:278)
webrunner.audio.AudioPlayer.run(AudioPlayer.oak:312)
    "Thread-3" (0x2c0d28): priority=4
oak.lang.Object.wait(Object.oak:124)
awt.DIWChildUpdater.getNextClient(DisplayItemWindow.oak:468)
awt.DIWChildUpdater.run(DisplayItemWindow.oak:489)
    "Thread-1" (0x2beb80): priority=5
webrunner.StatusWindow.run(webrunner.oak:366)
oak.lang.Thread.run(Thread.oak:194)
    "Background Image Reader" (0x2be6e0): priority=2
oak.lang.Object.wait(Object.oak:124)
webrunner.ImageReader.waitForRequest(ImageReader.oak:56)
webrunner.ImageReader.run(ImageReader.oak:114)
    "AWT WServer Thread" (0x2bde00): priority=5 *current thread*
awt.TextField.reshape(TextField.oak:47)
awt.FlowLayout.layout(FlowLayout.oak:145)
awt.DisplayItemWindow.handleResize(DisplayItemWindow.oak:53)
awt.Window.reshape(Window.oak:196)
awt.BorderLayout.layout(BorderLayout.oak:121)
awt.Container.layout(Container.oak:157)
awt.Frame.resize(Frame.oak:41)
    "Async Garbage Collector" (0x2bdb38): priority=1
    "Idle thread" (0x2bdae0): priority=0
    "clock handler" (0x2bdad0): priority=11
    "main" (0x2bdac8): priority=5
Monitor Cache Dump
    unknown key (key=0x383148): monitor owner: "Async Garbage Collector" (0x383148)
    oak.io.BufferedInputStream@2D7988/FEC90 (key=0x2d7988): monitor owner: "Thread-41" (0x7358b0)
    awt.DIWChildUpdater@2D4D68/F6F68 (key=0x2d4d68): unowned
Waiting to be notified:
"Thread-40" (0x2d4d68): priority=4
    awt.DIWChildUpdater@2C0D28/83BB0 (key=0x2c0d28): unowned
Waiting to be notified:
"Thread-3" (0x2c0d28): priority=4
    awt.WServer@2BDE00/580E8 (key=0x2bde00): monitor owner: "AWT WServer Thread" (0x403ff0)
    unknown key (key=0x50a6f0): unowned
Waiting to be notified:
"Thread-1" (0x2beb80): priority=5
    webrunner.audio.AudioPlayer@2CADF8/B0648 (key=0x2cadf8): unowned
Waiting to be notified:
"Thread-12" (0x2cadf8): priority=10
    webrunner.ImageReader@2BE6E0/5B018 (key=0x2be6e0): unowned
Waiting to be notified:
"Background Image Reader" (0x2be6e0): priority=2
    unknown key (key=0xef3a22a0): monitor owner: "main" (0x371c18)
registered monitor dump:
    Thread queue lock: unowned
Waiting to be notified:
"main" (0x2bdac8): priority=5
    Class resolution lock: unowned
    Code rewrite lock: unowned
    Heap lock: unowned
    Monitor registry: monitor owner: "AWT WServer Thread" (0x403ff0)
    Monitor cache lock: unowned
    Event monitor: unowned
    I/O monitor: unowned
Waiting to be notified:
"Thread-41" (0x2d7858): priority=3
    Alarm monitor: unowned
Waiting to be notified:
"clock handler" (0x2bdad0): priority=11
Thread Alarm Q:
    sys_thread_t 0x50a6f0 [Timeout in 134 ms]
Abort (core dumped)