[DrJava] [ drjava-Bugs-2877242 ] Error appears when repeatedly pressing Ctrl-Z

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Bugs item #2877242, was opened at 2009-10-12 19:37
Message generated for change (Tracker Item Submitted) made by nobody
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https://sourceforge.net/tracker/?func=detail&atid=438935&aid=2877242&group_id=44253

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Category: Other
Group: 3: Ugly
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: Error appears when repeatedly pressing Ctrl-Z

Initial Comment:
This has happened several times.  When undoing many code edits repeatedly, this error pops up.  Nothing else bad seems to happen, though, so it's just very annoying.

To reproduce:  

Open or create a file and make about 20 or so edits.  
Press Ctrl-Z repeatedly and rapidly (more than 3x per second should do it).

edu.rice.cs.util.UnexpectedException: java.lang.RuntimeException: Illegal location 117
	at edu.rice.cs.drjava.model.AbstractDJDocument.setCurrentLocation(AbstractDJDocument.java:474)
	at edu.rice.cs.drjava.model.AbstractDJDocument$UnremoveCommand$1.run(AbstractDJDocument.java:1863)
	at java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.RuntimeException: Illegal location 117
	at edu.rice.cs.util.UnexpectedException.<init>(UnexpectedException.java:71)
	... 10 more

Caused by:
java.lang.RuntimeException: Illegal location 117
	at edu.rice.cs.util.UnexpectedException.<init>(UnexpectedException.java:71)
	at edu.rice.cs.drjava.model.AbstractDJDocument.setCurrentLocation(AbstractDJDocument.java:474)
	at edu.rice.cs.drjava.model.AbstractDJDocument$UnremoveCommand$1.run(AbstractDJDocument.java:1863)
	at java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)

System Properties:
DrJava Version drjava-20090821-r5004
DrJava Build Time 20090821-1520

drjava.debug.port = 58466
java.runtime.name = Java(TM) SE Runtime Environment
sun.boot.library.path = C:\Program Files\Java\jre6\bin
java.vm.version = 14.2-b01
java.vm.vendor = Sun Microsystems Inc.
java.vendor.url = http://java.sun.com/
path.separator = ;
java.vm.name = Java HotSpot(TM) Client VM
file.encoding.pkg = sun.io
sun.java.launcher = SUN_STANDARD
user.country = US
sun.os.patch.level = 
java.vm.specification.name = Java Virtual Machine Specification
user.dir = <anonymized user.dir>
java.runtime.version = 1.6.0_16-b01
java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs = C:\Program Files\Java\jre6\lib\endorsed
os.arch = x86
java.io.tmpdir = <anonymized user.home>\AppData\Local\Temp\
line.separator = "\u000d\u000a"
java.vm.specification.vendor = Sun Microsystems Inc.
user.variant = 
os.name = Windows 7
sun.jnu.encoding = Cp1252
java.library.path = C:\Program Files\Java\jre6\bin;.;C:\Windows\Sun\Java\bin;<anonymized user.dir>;C:\Windows;C:\Program Files\Common Files\Microsoft Shared\Windows Live;<anonymized user.dir>;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Panda3D-1.6.2\python;C:\Panda3D-1.6.2\bin;C:\Windows\DPDrv;C:\Program Files\Common Files\Roxio Shared\9.0\DLLShared\;C:\Program Files\TortoiseSVN\bin;C:\Program Files\doxygen\bin;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Java\jdk1.6.0_16\bin;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files\Java\jre6\bin
java.specification.name = Java Platform API Specification
java.class.version = 50.0
sun.management.compiler = HotSpot Client Compiler
os.version = 6.1
user.home = <anonymized user.home>
user.timezone = America/New_York
java.awt.printerjob = sun.awt.windows.WPrinterJob
file.encoding = Cp1252
java.specification.version = 1.6
java.class.path = <anonymized user.home>\Downloads\Dr. Java.exe
user.name = <anonymized user.name>
java.vm.specification.version = 1.0
java.home = C:\Program Files\Java\jre6
sun.arch.data.model = 32
user.language = en
java.specification.vendor = Sun Microsystems Inc.
awt.toolkit = sun.awt.windows.WToolkit
java.vm.info = mixed mode, sharing
java.version = 1.6.0_16
java.ext.dirs = C:\Program Files\Java\jre6\lib\ext;C:\Windows\Sun\Java\lib\ext
sun.boot.class.path = C:\Program Files\Java\jre6\lib\resources.jar;C:\Program Files\Java\jre6\lib\rt.jar;C:\Program Files\Java\jre6\lib\sunrsasign.jar;C:\Program Files\Java\jre6\lib\jsse.jar;C:\Program Files\Java\jre6\lib\jce.jar;C:\Program Files\Java\jre6\lib\charsets.jar;C:\Program Files\Java\jre6\classes
java.vendor = Sun Microsystems Inc.
file.separator = \
java.vendor.url.bug = http://java.sun.com/cgi-bin/bugreport.cgi
sun.io.unicode.encoding = UnicodeLittle
sun.cpu.endian = little
java.rmi.server.hostname = 127.0.0.1
sun.desktop = windows
sun.cpu.isalist = pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86

#DrJava configuration file
#Mon Oct 12 15:32:10 EDT 2009
key.delete.next = [shift DELETE]
key.delete.previous = [shift BACK_SPACE]
save.before.compile = true
window.height = 744
window.width = 1296
window.x = -8
window.y = -8
window.state = 6
last.dir = C:\\Users\\<anonymized user.name>\\Documents\\Java\\ForTestingCodeOnly.java
last.interactions.dir = C:\\Users\\<anonymized user.name>\\Documents\\Java
tabbedpanes.state = 640 384 700 400
file.ext.registration = always

Used memory: about 24.40 megabytes
Free memory: about 8.38 megabytes
Total memory: about 32.77 megabytes
Total memory can expand to: about 63.56 megabytes

Number of processors/cores: 2

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[DrJava] [ drjava-Bugs-2877242 ] Error appears when repeatedly pressing Ctrl-Z

A lightweight programming environment for Java

[DrJava] [ drjava-Bugs-2877242 ] Error appears when repeatedly pressing Ctrl-Z