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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.
//
//===----------------------------------------------------------------------===//
// <string>
// const charT& back() const;
// charT& back();
#ifdef _LIBCPP_DEBUG
#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
#endif
#include <string>
#include <cassert>
#include "min_allocator.h"
template <class S>
void
test(S s)
{
const S& cs = s;
assert(&cs.back() == &cs[cs.size()-1]);
assert(&s.back() == &s[cs.size()-1]);
s.back() = typename S::value_type('z');
assert(s.back() == typename S::value_type('z'));
}
int main()
{
{
typedef std::string S;
test(S("1"));
test(S("1234567890123456789012345678901234567890"));
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
test(S("1"));
test(S("1234567890123456789012345678901234567890"));
}
#endif
#ifdef _LIBCPP_DEBUG
{
std::string s;
char c = s.back();
assert(false);
}
#endif
}
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