C++程序coredump及调试过程

class TSimpleString
{
public:
	typedef char charT;
	TSimpleString() : m_pStorage(NULL) {}
	~TSimpleString() { clear(); }
	TSimpleString(const TSimpleString& p) { reset(p.m_pStorage); }
	TSimpleString(const charT * pStorage) { reset(pStorage); }
	TSimpleString & operator = (const TSimpleString& p) { reset(p.m_pStorage); return *this; }
	TSimpleString & operator = (const charT * pStorage) { reset(pStorage); return *this; }

	bool			empty(void) const	{ return (m_pStorage == NULL); }
	void			clear(void);
	void			reset(const charT * pSrc);
	const charT *	get(void) const;		//如果m_pStorage==NULL, return TStringHelper::g_strEmptyString

private:
	charT *				m_pStorage;
};

void TSimpleString::clear()
{
	if( m_pStorage != NULL )
	{
		delete []m_pStorage;
		m_pStorage = NULL;
	}
}

void TSimpleString::reset(const TSimpleString::charT * pSrc)
{
	if( m_pStorage == pSrc )
		return;

	clear();
	size_t nLen = (pSrc == NULL) ? 0 : TStringHelper::length(pSrc);
	if( nLen > 0 )
	{
		m_pStorage = new charT [nLen + 1];
		TStringHelper::strCpyByCount(m_pStorage, pSrc, nLen);
	}
}

const TSimpleString::charT * TSimpleString::get(void) const
{
	if( m_pStorage == NULL )
		return TStringHelper::g_strEmptyString.c_str();
	return m_pStorage;
}

void onTestSimpleString()
{
	TSimpleString str1;
	std::cout << "str1:" << str1.get() << std::endl;
	TSimpleString str2("str2");
	std::cout << "str2:" << str2.get() << std::endl;
	TSimpleString str3(str2);
	std::cout << "str3:" << str3.get() << std::endl;
	str3 = "str3";
	std::cout << "str3:" << str3.get() << std::endl;
	TSimpleString str4 = str3;
	std::cout << "str4:" << str4.get() << std::endl;
}

TSimpleString(const TSimpleString& p) { reset(p.m_pStorage); }
TSimpleString(const charT * pStorage) { reset(pStorage); }

TSimpleString(const TSimpleString& p) : m_pStorage(NULL) { reset(p.m_pStorage); }
TSimpleString(const charT * pStorage) : m_pStorage(NULL) { reset(pStorage); }