27.stringbuf.xsputn.stdcxx-515.cpp

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#include <sstream>  // for stringstream
#include <string>   // for string
#include <cassert>  // for assert()
#include <cstddef>  // for size_t
 
int main ()
{
    for (std::size_t i = 1; i <= 1024; ++i) {
        std::stringstream strm;
        std::string s (i, 'a');
        strm << s;
        strm.seekp (-1, std::ios::cur);
        s.erase (0, 1);
        strm << "bc";
        s.append ("bc");
        assert (strm.str () == s);
    }
 
    return 0;
}