| 1 | // RUN: %clang_cc1 -fchar8_t -std=c++17 -verify %s |
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| 2 | // RUN: %clang_cc1 -std=c++2a -verify %s |
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| 3 | |
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| 4 | char8_t a = u8'a'; |
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| 5 | char8_t b[] = u8"foo"; |
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| 6 | char8_t c = 'a'; |
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| 7 | char8_t d[] = "foo"; // expected-error {{initializing 'char8_t' array with plain string literal}} expected-note {{add 'u8' prefix}} |
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| 8 | |
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| 9 | char e = u8'a'; |
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| 10 | char f[] = u8"foo"; |
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| 11 | #if __cplusplus <= 201703L |
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| 12 | // expected-error@-2 {{initialization of char array with UTF-8 string literal is not permitted by '-fchar8_t'}} |
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| 13 | #else |
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| 14 | // expected-error@-4 {{ISO C++20 does not permit initialization of char array with UTF-8 string literal}} |
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| 15 | #endif |
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| 16 | char g = 'a'; |
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| 17 | char h[] = "foo"; |
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| 18 | |
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| 19 | void disambig() { |
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| 20 | char8_t (a) = u8'x'; |
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| 21 | } |
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| 22 | |
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| 23 | void operator""_a(char); |
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| 24 | void operator""_a(const char*, decltype(sizeof(0))); |
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| 25 | |
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| 26 | void test_udl1() { |
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| 27 | int &x = u8'a'_a; // expected-error {{no matching literal operator}} |
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| 28 | float &y = u8"a"_a; // expected-error {{no matching literal operator}} |
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| 29 | } |
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| 30 | |
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| 31 | int &operator""_a(char8_t); |
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| 32 | float &operator""_a(const char8_t*, decltype(sizeof(0))); |
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| 33 | |
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| 34 | void test_udl2() { |
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| 35 | int &x = u8'a'_a; |
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| 36 | float &y = u8"a"_a; |
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| 37 | } |
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| 38 | |
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| 39 | template<typename E, typename T> void check(T &&t) { |
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| 40 | using Check = E; |
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| 41 | using Check = T; |
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| 42 | } |
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| 43 | void check_deduction() { |
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| 44 | check<char8_t>(u8'a'); |
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| 45 | check<const char8_t(&)[5]>(u8"a\u1000"); |
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| 46 | } |
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| 47 | |
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| 48 | static_assert(sizeof(char8_t) == 1); |
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| 49 | static_assert(char8_t(-1) > 0); |
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| 50 | static_assert(u8"\u0080"[0] > 0); |
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| 51 | |
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