58 lines
3.1 KiB
C++
58 lines
3.1 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c11 -x c -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c2x -x c -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++17 -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++17 -fsyntax-only -fchar8_t -verify %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++20 -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++20 -fsyntax-only -fno-char8_t -verify %s
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int array0[u'ñ' == u'\xf1'? 1 : -1];
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int array1['\xF1' != u'\xf1'? 1 : -1];
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int array1['ñ' != u'\xf1'? 1 : -1]; // expected-error {{character too large for enclosing character literal type}}
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#if __cplusplus > 201402L
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char a = u8'ñ'; // expected-error {{character too large for enclosing character literal type}}
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char b = u8'\x80'; // ok
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char c = u8'\u0080'; // expected-error {{character too large for enclosing character literal type}}
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char d = u8'\u1234'; // expected-error {{character too large for enclosing character literal type}}
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char e = u8'ሴ'; // expected-error {{character too large for enclosing character literal type}}
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char f = u8'ab'; // expected-error {{Unicode character literals may not contain multiple characters}}
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#elif __STDC_VERSION__ >= 202000L
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char a = u8'ñ'; // expected-error {{character too large for enclosing character literal type}}
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char b = u8'\x80'; // ok
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char c = u8'\u0080'; // expected-error {{universal character name refers to a control character}}
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char d = u8'\u1234'; // expected-error {{character too large for enclosing character literal type}}
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char e = u8'ሴ'; // expected-error {{character too large for enclosing character literal type}}
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char f = u8'ab'; // expected-error {{Unicode character literals may not contain multiple characters}}
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_Static_assert(
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_Generic(u8'a',
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default : 0,
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unsigned char : 1),
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"Surprise!");
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#endif
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// UTF-8 character literals are enabled in C++17 and later. If `-fchar8_t` is not enabled
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// (as is the case in C++17), then UTF-8 character literals may produce signed or
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// unsigned values depending on whether char is a signed type. If `-fchar8_t` is enabled
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// (which is the default behavior for C++20), then UTF-8 character literals always
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// produce unsigned values. The tests below depend on the target having a signed
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// 8-bit char so that '\xff' produces a negative value.
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#if __cplusplus >= 201703L
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# if !defined(__cpp_char8_t)
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# if !(u8'\xff' == '\xff')
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# error UTF-8 character value did not match ordinary character literal; this is unexpected
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# endif
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# else
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# if u8'\xff' == '\xff' // expected-warning {{right side of operator converted from negative value to unsigned}}
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# error UTF-8 character value matched ordinary character literal; this is unexpected
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# endif
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# endif
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#endif
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/// In C2x, u8 char literals are always unsigned.
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#if __STDC_VERSION__ >= 202000L
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# if u8'\xff' == '\xff'// expected-warning {{right side of operator converted from negative value to unsigned}}
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# error u8 char literal is not unsigned
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# endif
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#endif
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