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