This bug was originally marked as duplicate of bug 217888, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.

Build: NetBeans IDE Dev (Build 201308152300)
VM: Java HotSpot(TM) 64-Bit Server VM, 24.0-b55, Java(TM) SE Runtime Environment, 1.7.0_40-ea-b38
OS: Linux

User Comments:
GUEST: Created a project with existing sources and imported extracted JDK 7 source code. Purpose of doing this was to enable "Find Usages" to show me call sites in java standard libraries.

GUEST: looking up the usages of a function

everflux: Invoked find usages, typing a little fast and inserting a linebreak inside the very method I wanted to find the usages for, invalidating the code.

infonaut: use refresh usage after renaming the usage

GUEST: invoked find usages

GUEST: Searching for method usage

GUEST: Searching in projects

GUEST: find usage on a class method.

jiriprox: NPE when searching for method usages, quickly after IDE starts

GUEST: find usages

rburkhead: Refreshed a search for a method that I had since removed.




Stacktrace: 
java.lang.NullPointerException: #145291: Cannot resolve handle: TreePathHandle[delegate:TreeDelegate[kind:METHOD, enclosingElement:ElementHandle[kind=METHOD; sigs=nl.brandtech.pricetool.app.common.RoundingPropertyVisitor roundValue (Lnl/brandtech/pricetool/app/annotations/ApiValue$Type;Ljava/math/BigDecimal;)Ljava/math/BigDecimal; ], file:/home/tkruse/arbeit/reucon/brandbase/pricetool/pricetool-app/src/main/java/nl/brandtech/pricetool/app/common/RoundingPropertyVisitor.java@99ac2f03:2195c37]]
ClasspathInfo [boot: /usr/lib/jvm/jdk1.7.0_40_ea/jre/lib/resources.jar:/usr/lib/jvm/jdk1.7.0_40_ea/jre/lib/rt.jar:/usr/lib/jvm/jdk1.7.0_40_ea/jre/lib/sunrsasign.jar:/usr/lib/jvm/jdk1.7.0_40_ea/jre/lib/jsse.jar:/usr/lib/jvm/jdk1.7.0_40_ea/jre/lib/jce.jar:/usr/lib/jvm/jdk1.7.0_40_ea/jre/lib/charsets.jar:/usr/lib/jvm/jdk1.7.0_40_ea/jre/lib/jfr.jar:/usr/lib/jvm/jdk1.7.0_40_ea/jre/classes:/usr/lib/jvm/jdk1.7.0_40_ea/jre/lib/ext/localedata.jar:/usr/lib/jvm/jdk1.7.0_40_ea/jre/lib/ext/dnsns.jar:/usr/lib/jvm/jdk1.7.0_40_ea/jre/li
   at org.netbeans.modules.refactoring.java.plugins.JavaWhereUsedQueryPlugin$1.run(JavaWhereUsedQueryPlugin.java:256)
   at org.netbeans.modules.refactoring.java.plugins.JavaWhereUsedQueryPlugin$1.run(JavaWhereUsedQueryPlugin.java:246)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:493)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:593)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:155)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:139)