[XALANC-430] "StylesheetExecutionContext::getVariable(name)" crahes if variable "name" was not found.

• Type: Bug
• Status: Resolved
• Resolution: Fixed
• Affects Version/s: 1.8
• Component/s: XalanC
• Environment: Operating System: Solaris; Platform: Sun
• Bugzilla Id: 30229
• Assignee: Unassigned
• Reporter: Philip IPS
• Created: 21/Jul/04 16:31
• Updated: 16/Feb/11 23:13
• Resolved: 02/Sep/04 18:05

Description

Here is what I can read in the documentation :

----------------------------------------------------------------------------
virtual const XObjectPtr StylesheetExecutionContext::getVariable(const
XalanQName &name, const LocatorType *locator=0) [pure virtual]

Given a name, locate a variable in the current context, and return a pointer to
the object.

Parameters:
theName name of variable

Returns:
pointer to an XObject if the variable was found, 0 if it was not
----------------------------------------------------------------------------

In my program, I call the method like this :

aXObjectPtr = m_pStylesheetExecutionContext->getVariable(aXalanQName);

if(aXObjectPtr.null() == true)

{ /* Some error handling code ... */ }

1/ I have one remark about the documentation : aXObjectPtr is not a pointer but
a pointer object (in fact, this is an object value)
Consequently, it can not be returned as the 0 integer value.

2/ Instead of returning 0 or a null reference, my program crahes in the method
when the variable name was not found so no error can be handled.

PS: I had to const cast away the "m_executionContext" reference from
the "SelectionEvent" "TraceListener" object to be able to call the "getVariable
() method from the TraceListener.
Perhaps it is a side-effect of doing like this.