Re: [Boost-users] [serialization][1.33.0?] xml_iarchive leak

From: Jeff Flinn (TriumphSprint2000_at_[hidden])
Date: 2005-08-12 13:48:05

Robert,

>> The following code leads to numerous leaks when lIn's contents are
>> not an xml_archive. Any thoughts on the cause?
>>
>> try
>> {
>>    std::ifstream lIn( lpszPathName );
>>
>>    if( lIn.good() )
>>    {
>>            boost::archive::xml_iarchive ia( lIn );
>>    }
>> }
>> catch( boost::archive::xml_archive_exception& aExc )
>> {
>>    std::string lErr = aExc.what();
>> }
>
> Hmm - this would surprise me.  It looks to me that maybe I'm missing 
> something about clean up from exceptions.  baybe the std::ifstream lIn( 
> lpszPathName ); should be moved outside the try block.  I wouldn't think 
> that should be necessary but now that I look at this it might be.  What 
> happens when you do this?  Any C++ expert want to opine on this?

>> std::ifstream lIn( lpszPathName );
>>
>> try
>> {
>>    if( lIn.good() )
>>    {
>>            boost::archive::xml_iarchive ia( lIn );
>>    }
>> }
>> catch( boost::archive::xml_archive_exception& aExc )
>> {
>>    std::string lErr = aExc.what();
>> }

results in the same leaks. By the way this is with VC7.1.

Jeff Flinn