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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;
// int_type sputc(char_type c);
#include <streambuf>
#include <cassert>
int overflow_called = 0;
struct test
: public std::basic_streambuf<char>
{
typedef std::basic_streambuf<char> base;
test() {}
void setg(char* gbeg, char* gnext, char* gend)
{
base::setg(gbeg, gnext, gend);
}
void setp(char* pbeg, char* pend)
{
base::setp(pbeg, pend);
}
protected:
int_type overflow(int_type c = traits_type::eof())
{
++overflow_called;
return 'a';
}
};
int main()
{
{
test t;
assert(overflow_called == 0);
assert(t.sputc('A') == 'a');
assert(overflow_called == 1);
char out[3] = {0};
t.setp(out, out+sizeof(out));
assert(t.sputc('A') == 'A');
assert(overflow_called == 1);
assert(out[0] == 'A');
assert(t.sputc('B') == 'B');
assert(overflow_called == 1);
assert(out[0] == 'A');
assert(out[1] == 'B');
}
}
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