Missing Fixes for the NPE bugs in AbstractDOMParser.java
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Key: XERCESJ-1548
URL: https://issues.apache.org/jira/browse/XERCESJ-1548
Project: Xerces2-J
Issue Type: Bug
Components: Other
Reporter: Guangtai Liang
Priority: Critical
The fix revision 318567 was aimed to remove an NPE bug on "locator" in the
method "startDTD" of the file
"/xerces/java/trunk/src/org/apache/xerces/parsers/AbstractDOMParser.java" , but
it is incomplete.
Since the "locator" could be null during the run-time execution, it should also
be null-checked before being dereferenced at Line 1683 and Line 1684.
The buggy code the proposed missing fixes should also be made in is copied as
bellowing:
public void startDTD(XMLLocator locator, Augmentations augs) throws
XNIException {
if (DEBUG_EVENTS) {
System.out.println("==>startDTD");
if (DEBUG_BASEURI) {
System.out.println(" expandedSystemId:
"+locator.getExpandedSystemId()); [Line 1683]
System.out.println(" baseURI:"+ locator.getBaseSystemId());
[Line 1684]
}
}
fInDTD = true;
if (locator != null) {
fBaseURIStack.push(locator.getBaseSystemId());
}
if (fDeferNodeExpansion || fDocumentImpl != null) {
fInternalSubset = new StringBuffer(1024);
}
} // startDTD(XMLLocator)
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