| // RUN: %clang_cc1 -fchar8_t -std=c++17 -verify %s |
| // RUN: %clang_cc1 -std=c++2a -verify %s |
| |
| char8_t a = u8'a'; |
| char8_t b[] = u8"foo"; |
| char8_t c = 'a'; |
| char8_t d[] = "foo"; // expected-error {{initializing 'char8_t' array with plain string literal}} expected-note {{add 'u8' prefix}} |
| |
| char e = u8'a'; |
| char f[] = u8"foo"; |
| #if __cplusplus <= 201703L |
| // expected-error@-2 {{initialization of char array with UTF-8 string literal is not permitted by '-fchar8_t'}} |
| #else |
| // expected-error@-4 {{ISO C++20 does not permit initialization of char array with UTF-8 string literal}} |
| #endif |
| char g = 'a'; |
| char h[] = "foo"; |
| |
| void disambig() { |
| char8_t (a) = u8'x'; |
| } |
| |
| void operator""_a(char); |
| void operator""_a(const char*, decltype(sizeof(0))); |
| |
| void test_udl1() { |
| int &x = u8'a'_a; // expected-error {{no matching literal operator}} |
| float &y = u8"a"_a; // expected-error {{no matching literal operator}} |
| } |
| |
| int &operator""_a(char8_t); |
| float &operator""_a(const char8_t*, decltype(sizeof(0))); |
| |
| void test_udl2() { |
| int &x = u8'a'_a; |
| float &y = u8"a"_a; |
| } |
| |
| template<typename E, typename T> void check(T &&t) { |
| using Check = E; |
| using Check = T; |
| } |
| void check_deduction() { |
| check<char8_t>(u8'a'); |
| check<const char8_t(&)[5]>(u8"a\u1000"); |
| } |
| |
| static_assert(sizeof(char8_t) == 1); |
| static_assert(char8_t(-1) > 0); |
| static_assert(u8"\u0080"[0] > 0); |