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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <string>
// template<> struct char_traits<char8_t>
// static constexpr const char_type* find(const char_type* s, size_t n, const char_type& a);
#include <string>
#include <cassert>
#include "test_macros.h"
#ifndef TEST_HAS_NO_CHAR8_T
constexpr bool test_constexpr() {
constexpr const char8_t* p = u8"123";
return std::char_traits<char8_t>::find(p, 3, u8'1') == p && std::char_traits<char8_t>::find(p, 3, u8'2') == p + 1 &&
std::char_traits<char8_t>::find(p, 3, u8'3') == p + 2 &&
std::char_traits<char8_t>::find(p, 3, u8'4') == nullptr;
}
int main(int, char**) {
char8_t s1[] = {1, 2, 3};
assert(std::char_traits<char8_t>::find(s1, 3, char8_t(1)) == s1);
assert(std::char_traits<char8_t>::find(s1, 3, char8_t(2)) == s1 + 1);
assert(std::char_traits<char8_t>::find(s1, 3, char8_t(3)) == s1 + 2);
assert(std::char_traits<char8_t>::find(s1, 3, char8_t(4)) == 0);
assert(std::char_traits<char8_t>::find(s1, 3, char8_t(0)) == 0);
assert(std::char_traits<char8_t>::find(NULL, 0, char8_t(0)) == 0);
static_assert(test_constexpr(), "");
return 0;
}
#else
int main(int, char**) { return 0; }
#endif
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