//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <string>

// void pop_back();

#include <string>
#include <cassert>

template <class S>
void
test(S s, S expected)
{
    s.pop_back();
    assert(s.__invariants());
    assert(s == expected);
}

int main()
{
    typedef std::string S;
    test(S("abcde"), S("abcd"));
    test(S("abcdefghij"), S("abcdefghi"));
    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrs"));
}