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libcxx_old/test/std/strings/basic.string/string.access/db_cfront.pass.cpp

53 lines
1.0 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <string>
// Call front() on empty const container.
#if _LIBCPP_DEBUG >= 1
#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
#include <string>
#include <cassert>
#include <iterator>
#include <exception>
#include <cstdlib>
#include "test_macros.h"
#include "min_allocator.h"
int main(int, char**)
{
{
typedef std::string S;
const S s;
assert(s.front() == 0);
assert(false);
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
const S s;
assert(s.front() == 0);
assert(false);
}
#endif
}
#else
int main(int, char**)
{
return 0;
}
#endif