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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <streambuf>
// template <class charT, class traits = char_traits<charT> >
// class basic_streambuf;
// void gbump(int n);
#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);
}
void gbump(int n)
{
CharT* gbeg = base::eback();
CharT* gnext = base::gptr();
CharT* gend = base::egptr();
base::gbump(n);
assert(base::eback() == gbeg);
assert(base::gptr() == gnext+n);
assert(base::egptr() == gend);
}
};
int main(int, char**)
{
{
test<char> t;
char in[] = "ABCDE";
t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
t.gbump(2);
}
{
test<wchar_t> t;
wchar_t in[] = L"ABCDE";
t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
t.gbump(3);
}
return 0;
}
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