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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <streambuf>
// template <class charT, class traits = char_traits<charT> >
// class basic_streambuf;
// streamsize in_avail();
#include <streambuf>
#include <cassert>
int showmanyc_called = 0;
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);
}
protected:
std::streamsize showmanyc()
{
++showmanyc_called;
return 5;
}
};
int main()
{
{
test<char> t;
assert(t.in_avail() == 5);
assert(showmanyc_called == 1);
char in[5];
t.setg(in, in+2, in+5);
assert(t.in_avail() == 3);
}
}
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