| //===----------------------------------------------------------------------===// |
| // |
| // 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> |
| |
| // template<> struct char_traits<char16_t> |
| |
| // static void assign(char_type& c1, const char_type& c2); |
| // constexpr in C++17 |
| |
| #include <string> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| #if TEST_STD_VER > 14 |
| constexpr bool test_constexpr() |
| { |
| char16_t c = u'1'; |
| std::char_traits<char16_t>::assign(c, u'a'); |
| return c == u'a'; |
| } |
| #endif |
| |
| int main() |
| { |
| #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS |
| #if TEST_STD_VER >= 11 |
| char16_t c = u'\0'; |
| std::char_traits<char16_t>::assign(c, u'a'); |
| assert(c == u'a'); |
| #endif |
| |
| #if TEST_STD_VER > 14 |
| static_assert(test_constexpr(), "" ); |
| #endif |
| #endif // _LIBCPP_HAS_NO_UNICODE_CHARS |
| } |