Bug 4157

Summary:	debug crashs with infinite null pointer exceptions
Product:	frysk	Reporter:	Andrew Cagney <cagney>
Component:	general	Assignee:	Rick Moseley <rmoseley>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	P2
Version:	unspecified
Target Milestone:	---
Host:		Target:
Build:		Last reconfirmed:
Bug Depends on:
Bug Blocks:	1633

Description Andrew Cagney 2007-03-06 21:47:39 UTC

Select bash from the list of processes, and then select "debug".  Gives:

java.lang.NullPointerException
   at org.eclipse.cdt.internal.core.parser.Parser.LT(FryskGui)
   at org.eclipse.cdt.internal.core.parser.Parser.errorHandling(FryskGui)
   at
org.eclipse.cdt.internal.core.parser.Parser.failParseWithErrorHandling(FryskGui)
   at org.eclipse.cdt.internal.core.parser.Parser.translationUnit(FryskGui)
   at org.eclipse.cdt.internal.core.parser.Parser.parse(FryskGui)
   at frysk.dom.cparser.CDTParser.parse(FryskGui)
   at frysk.dom.DOMImage.addSource(FryskGui)
   at frysk.dom.DOMFactory.createDOM(FryskGui)
   at frysk.gui.srcwin.SourceWindow.generateProcStackTrace(FryskGui)
   at frysk.gui.srcwin.SourceWindow.finishSourceWin(FryskGui)
   at frysk.gui.srcwin.SourceWindow$LockObserver$31.run(FryskGui)
   at org.gnu.glib.CustomEvents.runEvents(libgtkjava-2.8.so)
   at org.gnu.gtk.Gtk.gtk_main(libgtkjava-2.8.so)
   at org.gnu.gtk.Gtk.main(libgtkjava-2.8.so)
   at frysk.gui.Gui.gui(FryskGui)
   at frysk.gui.FryskGui.main(FryskGui)
java.lang.NullPointerException

Comment 1 Rick Moseley 2007-03-07 13:20:01 UTC

I cannot duplicate this problem on my FC5/x86 machine running the latest
software/kernel(2.6.19-1.2288.2.4.fc5) nor can I duplicate it on my FC6/AMD 64
machine running the latest software/kernel(2.6.19-1.2911.6.4.fc6).  *Almost* the
proper thing occurs, the source window remains empty until I click on on a frame
and then the assembly code appears in the window.

This appears to be very similar to but not exactly like bz# 4093
(http://sourceware.org/bugzilla/show_bug.cgi?id=4093) which I fixed last week.  

Make sure the most current cdtparser.jar compiled with the change I committed on
Feb 27 is being used.

Comment 2 Rick Moseley 2007-03-16 19:52:23 UTC

I am now getting this error on my machine. Will look at it.

java.lang.NullPointerException
   at org.eclipse.cdt.internal.core.parser.Parser.LT(Parser.java:215)
   at org.eclipse.cdt.internal.core.parser.Parser.errorHandling(Parser.java:2873)
   at
org.eclipse.cdt.internal.core.parser.Parser.failParseWithErrorHandling(Parser.java:3113)
   at org.eclipse.cdt.internal.core.parser.Parser.translationUnit(Parser.java:3059)
   at org.eclipse.cdt.internal.core.parser.Parser.parse(Parser.java:2970)
   at frysk.dom.cparser.CDTParser.parse(CDTParser.java:195)
   at frysk.dom.DOMImage.addSource(DOMImage.java:158)
   at frysk.rt.Line.getDOMSource(Line.java:128)
   at frysk.gui.srcwin.CurrentStackView.buildTree(CurrentStackView.java:168)
   at frysk.gui.srcwin.CurrentStackView.<init>(CurrentStackView.java:99)
   at frysk.gui.srcwin.SourceWindow.populateStackBrowser(SourceWindow.java:450)
   at frysk.gui.srcwin.SourceWindow.finishSourceWin(SourceWindow.java:390)
   at frysk.gui.srcwin.SourceWindow$LockObserver$31.run(SourceWindow.java:2419)
   at org.gnu.glib.CustomEvents.runEvents(libgtkjava-2.8.so)
   at org.gnu.gtk.Gtk.gtk_main(libgtkjava-2.8.so)
   at org.gnu.gtk.Gtk.main(libgtkjava-2.8.so)
   at frysk.gui.Gui.gui(Gui.java:244)
   at frysk.gui.FryskGui.main(FryskGui.java:59)

Comment 3 Rick Moseley 2007-03-20 18:35:43 UTC

Fixed in HEAD.  Bug was fixed in
org/eclipse/cdt/internal/core/parser/Parser.java(LT).