[Clirr-devel] [ clirr-Bugs-1377978 ] NullPointerException during report generation

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Bugs item #1377978, was opened at 2005-12-10 22:10
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Category: Ant Task
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Curt Arnold (carnold)
Assigned to: Lars Kühne (lkuehne)
Summary: NullPointerException during report generation

Initial Comment:
I've been adding a clirr target to the log4j build file
and have been encountering a NullPointerException when
attempting to generate a compatibility report.

The kludgy patch attached fix the problem for me, but
doesn't explain why BCEL was throwing a NPE.  The
underlying problem may be in BCEL.

Stack trace as follows:


C:\workspace\trunk\build.xml:804:
java.lang.NullPointerException
	at org.apache.tools.ant.Task.perform(Task.java:373)
	at org.apache.tools.ant.Target.execute(Target.java:341)
	at
org.apache.tools.ant.Target.performTasks(Target.java:369)
	at
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
	at
org.apache.tools.ant.Project.executeTarget(Project.java:1185)
	at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40)
	at
org.apache.tools.ant.Project.executeTargets(Project.java:1068)
	at org.apache.tools.ant.Main.runBuild(Main.java:668)
	at org.apache.tools.ant.Main.startAnt(Main.java:187)
	at
org.apache.tools.ant.launch.Launcher.run(Launcher.java:246)
	at
org.apache.tools.ant.launch.Launcher.main(Launcher.java:67)
Caused by: java.lang.NullPointerException
	at
org.apache.bcel.classfile.JavaClass.getAllInterfaces(JavaClass.java:808)
	at
net.sf.clirr.core.internal.bcel.BcelJavaType.getAllInterfaces(BcelJavaType.java:78)
	at
net.sf.clirr.core.internal.checks.InterfaceSetCheck.check(InterfaceSetCheck.java:58)
	at
net.sf.clirr.core.Checker.runClassChecks(Checker.java:190)
	at net.sf.clirr.core.Checker.reportDiffs(Checker.java:136)
	at net.sf.clirr.ant.AntTask.execute(AntTask.java:303)
	at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
	at org.apache.tools.ant.Task.perform(Task.java:364)
	... 10 more
--- Nested Exception ---
java.lang.NullPointerException
	at
org.apache.bcel.classfile.JavaClass.getAllInterfaces(JavaClass.java:808)
	at
net.sf.clirr.core.internal.bcel.BcelJavaType.getAllInterfaces(BcelJavaType.java:78)
	at
net.sf.clirr.core.internal.checks.InterfaceSetCheck.check(InterfaceSetCheck.java:58)
	at
net.sf.clirr.core.Checker.runClassChecks(Checker.java:190)
	at net.sf.clirr.core.Checker.reportDiffs(Checker.java:136)
	at net.sf.clirr.ant.AntTask.execute(AntTask.java:303)
	at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
	at org.apache.tools.ant.Task.perform(Task.java:364)
	at org.apache.tools.ant.Target.execute(Target.java:341)
	at
org.apache.tools.ant.Target.performTasks(Target.java:369)
	at
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
	at
org.apache.tools.ant.Project.executeTarget(Project.java:1185)
	at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40)
	at
org.apache.tools.ant.Project.executeTargets(Project.java:1068)
	at org.apache.tools.ant.Main.runBuild(Main.java:668)
	at org.apache.tools.ant.Main.startAnt(Main.java:187)
	at
org.apache.tools.ant.launch.Launcher.run(Launcher.java:246)
	at
org.apache.tools.ant.launch.Launcher.main(Launcher.java:67)

Total time: 2 seconds


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