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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.
//
//===----------------------------------------------------------------------===//
// <strstream>
// class istrstream
// explicit istrstream(const char* s, streamsize n);
#include <strstream>
#include <cassert>
int main()
{
{
const char buf[] = "123 4.5 dog";
std::istrstream in(buf, 7);
int i;
in >> i;
assert(i == 123);
double d;
in >> d;
assert(d == 4.5);
std::string s;
in >> s;
assert(s == "");
assert(in.eof());
assert(in.fail());
in.clear();
in.putback('5');
assert(!in.fail());
in.putback('5');
assert(in.fail());
assert(buf[5] == '.');
assert(buf[6] == '5');
}
}
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