https://issues.apache.org/bugzilla/show_bug.cgi?id=52721
Bug #: 52721
Summary: An incomplete fix for the resource leak bug in
StandardContext.java
Product: Tomcat 6
Version: unspecified
Platform: PC
Status: NEW
Severity: critical
Priority: P2
Component: Catalina
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
The fix revision 423920 was aimed to remove an resource leak bug on the
FileOutputStream object "fos"and the ObjectOutputStream "oos" in the method
"cacheContext" of the file
"/tomcat/tc6.0.x/trunk/java/org/apache/catalina/core/StandardContext.java" ,
but it is incomplete.
When the statements at lines 4792 throw any eception, the objects "fos" and
"oos" can not be closed as expected. The best way to close such resource object
is putting such close operations in the finaly block of a try-catch-finally
structure.
Besides that, when oos is created unsuccessfully but "fos" is created
successfully, "fos" will also be leaked.
The buggy code in the head revision is copied as bellows:
private void cacheContext() {
try {
File workDir=new File( getWorkPath() );
File ctxSer=new File( workDir, "_tomcat_context.ser");
FileOutputStream fos=new FileOutputStream( ctxSer );
ObjectOutputStream oos=new ObjectOutputStream( fos );
oos.writeObject(this);
[line 4793] oos.close();
[line 4794] fos.close();
} catch( Throwable t ) {
if(log.isInfoEnabled())
log.info("Error saving context.ser ", t);
}
}
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