[xsd-users] access violation with --generate-wildcards

[Rizzuto, Raymond]

Hi!

I was compiling my code as follows:

xsd.exe cxx-tree  --output-dir . --hxx-suffix .hxx --cxx-suffix .cxx --ixx-suffix .ixx --fwd-suffix -fwd.hxx --generate-serialization --generate-polymorphic --generate-ostream --generate-comparison --generate-intellisense --type-naming ucc --function-naming lcc --root-element-all

I decided to add -generate-wildcards.  Now I take an unhandled exception:

Unhandled exception at 0x1200987a (xerces-c_2_8D_vc80.dll) in SDMPTest.exe: 0xC0000005: Access violation reading location 0x00000000.

            xerces-c_2_8D_vc80.dll!xercesc_2_8::XMLMutex::lock()  Line 60 + 0x3 bytes       C++
            xerces-c_2_8D_vc80.dll!xercesc_2_8::XMLMutexLock::XMLMutexLock(xercesc_2_8::XMLMutex * const toLock=0x00000000)  Line 78     C++
            xerces-c_2_8D_vc80.dll!xercesc_2_8::getDOMImplSrcVectorMutex()  Line 90 + 0xe bytes            C++
            xerces-c_2_8D_vc80.dll!xercesc_2_8::DOMImplementationRegistry::getDOMImplementation(const wchar_t * features=0x0012f35c)  Line 123 + 0x5 bytes       C++
            SDMPTest.exe!xsd::cxx::xml::dom::create_document<char>()  Line 30 + 0xc bytes         C++
            SDMPTest.exe!sdmp::messages::ObjectId::ObjectId(const char * String=0x007f8e4c, const sdmp::messages::SystemId & source={...}, const int & revision=3)  Line 11393 + 0x71 bytes        C++
            SDMPTest.exe!wmain(int argc=1, wchar_t * * argv=0x00366b40)  Line 16 + 0x3c bytes     C++
            SDMPTest.exe!__tmainCRTStartup()  Line 594 + 0x19 bytes        C
            SDMPTest.exe!wmainCRTStartup()  Line 414      C
            kernel32.dll!7c816fd7()
            [Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]

This is happening in the constructor call for my object:

    DomainObject::IdType test("request-1", "SusexToSDMP", 3);

Id in DomainObject is of type ObjectId, defined as follows:

            <xs:complexType name="ObjectId">
                        <xs:simpleContent>
                                    <xs:extension base="xs:string">
                                                <xs:attribute name="source" type="SystemId" use="required">
                                                </xs:attribute>
                                                <xs:attribute name="revision" type="xs:int" use="required">
                                                </xs:attribute>
                                                <xs:anyAttribute namespace="##targetNamespace">
                                                            <xs:annotation>
                                                                        <xs:documentation>Additional attributes may be added in future revisions.</xs:documentation>
                                                            </xs:annotation>
                                                </xs:anyAttribute>
                                    </xs:extension>
                        </xs:simpleContent>
            </xs:complexType>

I was able to find the answer in the manual, and added the calls to    xercesc::XMLPlatformUtils::Initialize ();  and    xercesc::XMLPlatformUtils::Terminate ();

However, with this change, I got an exception on my app exit.   Turned out to be my fault.  Basically the code was:

main()
{
    xercesc::XMLPlatformUtils::Initialize ();
    DomainObject::IdType test("request-1", "SusexToSDMP", 3);
        .
        .
        .
    xercesc::XMLPlatformUtils::Terminate ();
}

The crash was like this:

            xerces-c_2_8D_vc80.dll!xercesc_2_8::DOMDocumentImpl::deleteHeap()  Line 884 + 0x1d bytes            C++
            xerces-c_2_8D_vc80.dll!xercesc_2_8::DOMDocumentImpl::~DOMDocumentImpl()  Line 208    C++
            xerces-c_2_8D_vc80.dll!xercesc_2_8::DOMDocumentImpl::`vector deleting destructor'()  + 0x50 bytes            C++
            xerces-c_2_8D_vc80.dll!xercesc_2_8::DOMDocumentImpl::release()  Line 1367 + 0x20 bytes     C++
            SDMPTest.exe!xsd::cxx::xml::dom::auto_ptr<xercesc_2_8::DOMDocument>::reset(xercesc_2_8::DOMDocument * x=0x00000000)  Line 145 + 0x1c bytes         C++
             SDMPTest.exe!xsd::cxx::xml::dom::auto_ptr<xercesc_2_8::DOMDocument>::~auto_ptr<xercesc_2_8::DOMDocument>()  Line 50         C++
            SDMPTest.exe!sdmp::messages::ObjectId::~ObjectId()  Line 11512 + 0x29 bytes C++
            SDMPTest.exe!wmain(int argc=1, wchar_t * * argv=0x00366b40)  Line 120 + 0x19 bytes            C++

Obviously, terminating xerces and then destructing the object was an issue.  I changed the code to:

main()
{
    xercesc::XMLPlatformUtils::Initialize ();
    {
        DomainObject::IdType test("request-1", "SusexToSDMP", 3);
                .
                .
                .
        }
    xercesc::XMLPlatformUtils::Terminate ();
}

Anyway, just wanted to pass along the information in case others run into this issue.

Ray

________________________________
Ray Rizzuto
raymond.rizzuto at sig.com
Susquehanna International Group
(610)747-2336 (W)
(215)776-3780 (C)



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