Problem with tellp()

[clros]

Hi!
To verify that a stringstream object is "empty", I use tellp() method in this manner:

streamstring ss;
[...]
if (ss.tellp() == -1)

This code works fine under GCC, but produces an error under MSVC 10.
I think the problem is the comparison with the integer -1.

What is the correct way to use tellp() and what is the correct way to verify that a stringstream object is empty?

[aiby]

Hello,
Use the str() member of streamstring to return a string calss, and then use string.empty()

[kbw]

That's a novel way to test for empty. This returns 0 with gcc and MSVC10.

#include <sstream>
#include <iostream>

int main()
{
	std::stringstream ss;
	std::cout << ss.tellp() << std::endl;
	return 0;
}

[clros]

@kbw:

Ok, but I should compare with a 0 integer value the returned value of tellp() and this is the problem...

[kbw]

If it's specifically a stringstream, I'd recomend going with aiby's suggestion above.