Bug 252588 - NPE resolving types
Summary: NPE resolving types
Status: VERIFIED WORKSFORME
Alias: None
Product: JDT
Classification: Eclipse Project
Component: Core (show other bugs)
Version: 3.5   Edit
Hardware: PC Windows XP
: P3 normal (vote)
Target Milestone: 3.6 M4   Edit
Assignee: Olivier Thomann CLA
QA Contact:
URL:
Whiteboard:
Keywords: needinfo
Depends on:
Blocks:
 
Reported: 2008-10-29 10:06 EDT by John Arthorne CLA
Modified: 2009-12-10 09:06 EST (History)
2 users (show)

See Also:

Attachments
org.eclipse.core.tools bundle (191.74 KB, application/octet-stream)
2008-11-17 20:56 EST, John Arthorne CLA 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description John Arthorne CLA 2008-10-29 10:06:42 EDT 
The org.eclipse.core.tools plugin has a tool for finding unreferenced methods. This has been working fine for a few years, but lately it has been sometimes throwing this NPE.  I realize I'm calling internal code here, but thought I should report this anyway in case there is a real problem:

java.lang.NullPointerException
at org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding.resolveTypesFor(SourceTypeBinding.java:1292)
at org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding.methods(SourceTypeBinding.java:1087)
at org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding.availableMethods(ReferenceBinding.java:174)
at org.eclipse.jdt.core.dom.TypeBinding.getDeclaredMethods(TypeBinding.java:231)
at org.eclipse.jdt.internal.corext.dom.Bindings.findOverriddenMethodInType(Bindings.java:439)
at org.eclipse.jdt.internal.corext.dom.Bindings.findOverriddenMethodInHierarchy(Bindings.java:456)
at org.eclipse.jdt.internal.corext.dom.Bindings.findOverriddenMethodInHierarchy(Bindings.java:467)
at org.eclipse.jdt.internal.corext.dom.Bindings.findOverriddenMethodInHierarchy(Bindings.java:467)
at org.eclipse.jdt.internal.corext.dom.Bindings.findOverriddenMethod(Bindings.java:490)
at org.eclipse.core.tools.search.FindUnusedMembers.methodOverrides(FindUnusedMembers.java:124)
at org.eclipse.core.tools.search.FindUnusedMembers.doSearchType(FindUnusedMembers.java:139)
at org.eclipse.core.tools.search.FindUnusedMembers.doSearchCU(FindUnusedMembers.java:116)
at org.eclipse.core.tools.search.FindUnusedMembers.process(FindUnusedMembers.java:207)
at org.eclipse.core.tools.search.FindUnusedSearchQuery.run(FindUnusedSearchQuery.java:68)
at org.eclipse.search2.internal.ui.InternalSearchUI$InternalSearchJob.run(InternalSearchUI.java:93)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Comment 1 Jerome Lanneluc CLA 2008-11-17 07:32:03 EST 
Any steps to reproduce?
Comment 2 John Arthorne CLA 2008-11-17 20:56:20 EST 
Created attachment 118112 [details]
org.eclipse.core.tools bundle

I changed the org.eclipse.core.tools code in HEAD to use different API so the problem no longer occurs. Here is the old version of org.eclipse.core.tools which exhibits the problem.
Comment 3 John Arthorne CLA 2008-11-17 20:57:21 EST 
(steps are to install this bundle in a recent build, and select "Find Unused Members" from the context menu on some compilation unit.
Comment 4 Jerome Lanneluc CLA 2008-11-18 06:39:14 EST 
(In reply to comment #3)
> (steps are to install this bundle in a recent build, and select "Find Unused
> Members" from the context menu on some compilation unit.
> 
Unfortunately this doesn't throw a NPE for me.
Comment 5 Olivier Thomann CLA 2009-12-09 10:25:07 EST 
Closing as WORKSFORME.
Please reopen if you can provide steps to reproduce.
Comment 6 Jay Arthanareeswaran CLA 2009-12-10 00:59:39 EST 
Verified for 3.6M4
Comment 7 Olivier Thomann CLA 2009-12-10 09:06:33 EST 
Verified.