Is there anything wrong with the code?

[dullboy]

The code in the following, could you point out what is wrong? Why is it wrong? Thanks for your inputs.

void reverseString(const char* str1, char* str2)
{
	int len = strlen(str1);

	str2 = new char[len+1];

	char* p = const_cast<char*>(str1) + len - 1;

	while(p>=str1)
	{
		*str2++ = *p--;
	}

	*str2 = '\0';

}

int  main()
{

	const char* s1 = "Tony";

	char* s2;

	reverseString(s1, s2);

	cout<<s2<<endl;

	return 0;
}