#include <streambuf>
#include <cassert>
template <class CharT>
struct test
: public std::basic_streambuf<CharT>
{
typedef std::basic_streambuf<CharT> base;
test() {}
void setg(CharT* gbeg, CharT* gnext, CharT* gend)
{
base::setg(gbeg, gnext, gend);
assert(base::eback() == gbeg);
assert(base::gptr() == gnext);
assert(base::egptr() == gend);
}
};
int main()
{
{
test<char> t;
char in[] = "ABC";
t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
}
{
test<wchar_t> t;
wchar_t in[] = L"ABC";
t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
}
}