https://issues.apache.org/bugzilla/show_bug.cgi?id=49400
Summary: Log statements in AbstractFileset can cause
NullPointerExceptions
Product: Ant
Version: 1.8.1
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Core
AssignedTo: [email protected]
ReportedBy: [email protected]
I use the tasks defined in Apache Ant programatically to perform simple unix
tasks such as deleting directories, untarring files, etc. When using these
tasks in this fashion, I do not create instances of Project to pass to the
classes.
Recently, after using the Delete class successfully some time, I began calling:
delete.setFollowSymlinks(false)
and started seeing NPE's after calling delete.execute(). Stacktrace:
Caused by: java.lang.NullPointerException
at
org.apache.tools.ant.types.AbstractFileSet.setupDirectoryScanner(AbstractFileSet.java:464)
at
org.apache.tools.ant.types.AbstractFileSet.getDirectoryScanner(AbstractFileSet.java:430)
at org.apache.tools.ant.types.FileSet.size(FileSet.java:82)
at
org.apache.tools.ant.types.resources.Resources$MyCollection.<init>(Resources.java:74)
at
org.apache.tools.ant.types.resources.Resources.validate(Resources.java:229)
at
org.apache.tools.ant.types.resources.Resources.isFilesystemOnly(Resources.java:162)
at org.apache.tools.ant.taskdefs.Delete.execute(Delete.java:587)
This was run using ant version 1.7.0. Looking into the source code for
AbstractFileSet, line 464 is:
p.log(getDataTypeName() + ": Setup scanner in dir " + dir
+ " with " + ps, Project.MSG_DEBUG);
It seems like project is null at this line when the log statement is called.
This problem does not occur if I do not call setFollowSymlinks.
This line corresponds with line 520 of AbstractFileSet in version 1.8.1.
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