stringstream question

[pimeson]

Hello,

I am trying to do the following: write some stuff to a stringstream, output the stringstream to a string, write the string and some stuff into another stringstream; later get the string out of the second stringstream, and resurrect the original stringstream and its content from the string. Here is the example code:

#include <iostream>
#include <sstream>
using namespace std;

int main(int argc, char *argv[]){

        int t = 1;
        int z;
	stringstream stream1;
	stringstream stream2;
	stringstream stream3;
	int size;
	string tmp;
	char * in;
	
// write int to first stream
	stream1.write(reinterpret_cast<char *>(&t), sizeof(t));
// output stream into string	
	stream1 >> tmp;
// then string into next stream
        size = tmp.size();
	stream2.write(reinterpret_cast<char *>(&size), sizeof(size));
	stream2.write(tmp.c_str(), size+1);

// get everything out
        in = new char[size+1];	
	stream2.read(reinterpret_cast<char *>(&size), sizeof(size));
	stream2.read(in, size+1);
	tmp = in;

// and resurect the original stream
	stream3 << tmp;
	stream3.read(reinterpret_cast<char *>(&z), sizeof(z));
	
	cout << z << "\n";
	
	return 1;
}

The code should output 1 but it outputs -1073745663 so I suppose I've got an over/underflow somewhere or messed up with the number of bytes read. I tried putting just the first stream into a string and resurecting it from there, that worked without problems, so I thought wrapping stringstreams in stringstreams should work too? Any hints?

Thx,
PiMeson