VS2015引发了异常:读取访问权限冲突pNode是nullptr

VS2015引发了异常:读取访问权限冲突pNode是nullptr

#include “WidgetScenceXmlParse.h”
#include “Game/Script/utility.h”
#include “Game/Script/ScriptData.h”
#include “Game/Script/utility.h”
#include “WidgetManager.h”
#include “WidgetSkinXMLparse.h”
#include “Game/Script/SoundFun.h”
#include “WidgetFun.h”

USING_NS_CC;

WidgetScenceXMLparse::WidgetScenceXMLparse( std::string xmlFileName,cocos2d::Node* pNode)
{
m_pAddNodes.push_back(pNode);
m_pRootNode = pNode;

WidgetUserInfo* pUserInfo = new WidgetUserInfo;
pUserInfo->bRoot = true;
pNode->setUserObject(pUserInfo);//光标在这一行

SAXParser parser;
parser.setDelegator(this);
std::string kFullPath = utility::FullPath(xmlFileName);
parser.parse(kFullPath.c_str());

}

bool bWidgetScenceXMLparseTest = true;
void WidgetScenceXMLparse::setTest(bool bValue)
{
bWidgetScenceXMLparseTest = bValue;
}
void WidgetScenceXMLparse::startElement(void *ctx, const char *name, const char *atts)
{
std::string elementName = (char)name;
std::map attributeDict;
utility::createAttributeDict(attributeDict,atts);
if (!bWidgetScenceXMLparseTest)
{
return;
}

if(elementName == "LoadSkin")
{
	std::string kSkin = utility::valueForKey("Skin", attributeDict);
	WidgetSkinXMLparse kXml(kSkin);
}
if(elementName == "ReloadSound")
{
	std::string kName = utility::valueForKey("SoundName", attributeDict);
	SoundFun::Instance().playEffect(kName,true);
}
if (elementName == "Widget")
{
	CCAssert(m_pAddNodes.size(),"m_pAddNodes");
	std::string kName = utility::valueForKey("Name",attributeDict);
	std::string kSkinTempName = utility::valueForKey("SkinTempName",attributeDict);
	WidgetInfo* pWidgetInfo = WidgetManager::Instance().getWidgetInfo(kSkinTempName,false);
	if (!pWidgetInfo)
	{
		pWidgetInfo = WidgetManager::Instance().getWidgetInfo("Error");
	}
	cocos2d::Node* pNode = WidgetManager::Instance().createWidget(pWidgetInfo,m_pAddNodes.back());
	WidgetUserInfo* pUserInfo = dynamic_cast(pNode->getUserObject());
	pUserInfo->bIsSkin = false;
	pUserInfo->kName = kName;
	pUserInfo->kSkinTempName = kSkinTempName;
	m_pAddNodes.push_back(pNode);
	m_pWidgetInfos.push_back(pWidgetInfo);
}
if (elementName == "ScenceXml")
{
	CCAssert(m_pAddNodes.size(),"m_pAddNodes");
	std::string kScenceXml = utility::valueForKey("File",attributeDict);
	WidgetScenceXMLparse kXml(kScenceXml,m_pAddNodes.back());
}
if (elementName == "Property")
{
	CCAssert(m_pAddNodes.size() > 1 && m_pWidgetInfos.size(),"m_pAddNodes");
	cocos2d::Node* pNode = m_pAddNodes.back();
	WidgetInfo* pWidgetInfo = m_pWidgetInfos.back();
	std::string kKey = utility::valueForKey("Key",attributeDict);
	std::string kValue = utility::valueForKey("Value",attributeDict);
	WidgetManager::Instance().changePropertyByType(pNode,pWidgetInfo->kType,kKey,kValue);
}
if (elementName == "UserInfo")
{
	CCAssert(m_pAddNodes.size() > 1 && m_pWidgetInfos.size(),"m_pAddNodes");
	std::string kKey = utility::valueForKey("Key",attributeDict);
	std::string kValue = utility::valueForKey("Value",attributeDict);
	cocos2d::Node* pNode = m_pAddNodes.back();
	WidgetUserInfo* pUserInfo = dynamic_cast(pNode->getUserObject());
	pUserInfo->kUserInfo.insert(std::make_pair(kKey,kValue));
}
if (elementName == "Action")
{
	CCAssert(m_pAddNodes.size() > 1 && m_pWidgetInfos.size(),"m_pAddNodes");
	std::string kKey = utility::valueForKey("Key",attributeDict);
	std::string kValue = utility::valueForKey("Value",attributeDict);
	cocos2d::Node* pNode = m_pAddNodes.back();
	WidgetUserInfo* pUserInfo = dynamic_cast(pNode->getUserObject());
	pUserInfo->kAction.push_back(stringKeyValue(kKey,kValue));
}
if (elementName == "ChildProperty")
{
	cocos2d::Node* pNode = m_pAddNodes.back();
	std::string kName = utility::valueForKey("Name",attributeDict);
	std::string kKey = utility::valueForKey("Key",attributeDict);
	std::string kValue = utility::valueForKey("Value",attributeDict);
	WidgetFun::setWidgetProperty(pNode,kName,kKey,kValue);
}
if (elementName == "MoveWidget")
{
	std::string kName = utility::valueForKey("Name",attributeDict);
	cocos2d::Node* pNode = WidgetFun::getChildWidget(m_pRootNode,kName);
	m_pAddNodes.push_back(pNode);
}

}
void WidgetScenceXMLparse::endElement(void *ctx, const char name)
{
std::string elementName = (char)name;
if (elementName == “Widget” && m_pAddNodes.size() && m_pWidgetInfos.size())
{
m_pAddNodes.pop_back();
m_pWidgetInfos.pop_back();
}
if (elementName == “MoveWidget” && m_pAddNodes.size() && m_pWidgetInfos.size())
{
m_pAddNodes.pop_back();
m_pWidgetInfos.pop_back();
}
}

void WidgetScenceXMLparse::textHandler(void *ctx, const char *s, int len)
{

}