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13629b1408
C2x was finalized at the June 2023 WG14 meeting. The DIS is out for balloting and the comment period for that closes later this year/early next year. While that does leave an opportunity for more changes to the standard during the DIS ballot resolution process, only editorial changes are anticipated and as a result, the C committee considers C2x to be final. The committee took a straw poll on what we'd prefer the informal name of the standard be, and we decided it should be called C23 regardless of what year ISO publishes it. However, because the final publication is not out, this patch does not add the language standard alias for the -std=iso9899:<year> spelling of the standard mode; that will be added once ISO finally publishes the document and the year chosen will match the publication date. This also changes the value of __STDC_VERSION__ from the placeholder value 202000L to the final value 202311L. Subsequent patches will start renaming things from c2x to c23, cleaning up documentation, etc. Differential Revision: https://reviews.llvm.org/D157606
102 lines
4.0 KiB
C
102 lines
4.0 KiB
C
// RUN: %clang_cc1 %s -fsyntax-only -std=c99 -verify
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// RUN: %clang_cc1 %s -fsyntax-only -std=c2x -Wc99-compat -verify
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// RUN: %clang_cc1 %s -fsyntax-only -std=c11 -Wc99-compat -verify
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// RUN: %clang_cc1 %s -fsyntax-only -x c++ -std=c++03 -Wc++11-compat -verify
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// RUN: %clang_cc1 %s -fsyntax-only -x c++ -std=c++11 -Wc++98-compat -verify
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// Identifier characters
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extern char a\u01F6; // C11, C++11
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extern char a\u00AA; // C99, C11, C++11
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extern char a\u0384; // C++03, C11, C++11
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extern char a\u0E50; // C99, C++03, C11, C++11
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extern char a\uFFFF; // none
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// Identifier initial characters
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extern char \u0E50; // C++03, C11, C++11
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extern char \u0300; // disallowed in C99/C++03
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extern char \u0D61; // C99, C11, C++03, C++11
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// Disallowed everywhere
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#define A \u0000 // expected-error{{control character}}
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#define B \u001F // expected-error{{control character}}
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#define C \u007F // expected-error{{control character}}
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#define D \u009F // expected-error{{control character}}
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#define E \uD800 // C++03 allows UCNs representing surrogate characters!
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#if __cplusplus
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// expected-error@10 {{character <U+0384> not allowed in an identifier}}
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// expected-error@12 {{character <U+FFFF> not allowed in an identifier}}
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// expected-error@18 {{expected unqualified-id}}
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# if __cplusplus >= 201103L
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// C++11
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// expected-error@19 {{expected unqualified-id}}
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// expected-error@33 {{invalid universal character}}
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# else
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// C++03
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// expected-error@19 {{expected unqualified-id}}
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// expected-warning@33 {{universal character name refers to a surrogate character}}
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# endif
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#else
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# if __STDC_VERSION__ >= 202311L
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// C23
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// expected-warning@8 {{using this character in an identifier is incompatible with C99}}
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// expected-error@10 {{character <U+0384> not allowed in an identifier}}
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// expected-error@12 {{character <U+FFFF> not allowed in an identifier}}
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// expected-error@18 {{expected identifier}}
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// expected-error@19 {{expected identifier}}
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// expected-error@33 {{invalid universal character}}
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# elif __STDC_VERSION__ >= 201112L
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// C11
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// expected-warning@8 {{using this character in an identifier is incompatible with C99}}
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// expected-warning@10 {{using this character in an identifier is incompatible with C99}}
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// expected-error@12 {{character <U+FFFF> not allowed in an identifier}}
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// expected-warning@18 {{starting an identifier with this character is incompatible with C99}}
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// expected-error@19 {{expected identifier}}
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// expected-error@33 {{invalid universal character}}
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# else
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// C99
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// expected-error@8 {{not allowed in an identifier}}
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// expected-error@10 {{not allowed in an identifier}}
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// expected-error@12 {{not allowed in an identifier}}
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// expected-error@18 {{expected identifier}}
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// expected-error@19 {{expected identifier}}
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// expected-error@33 {{invalid universal character}}
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# endif
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#endif
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#define AAA\u0024 // expected-error {{character '$' cannot be specified by a universal character name}} \
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// expected-warning {{whitespace}}
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#define AAB\u0040 // expected-error {{character '@' cannot be specified by a universal character name}} \
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// expected-warning {{whitespace}}
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#define AAC\u0060 // expected-error {{character '`' cannot be specified by a universal character name}} \
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// expected-warning {{whitespace}}
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#define ABA \u0024 // expected-error {{character '$' cannot be specified by a universal character name}}
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#define ABB \u0040 // expected-error {{character '@' cannot be specified by a universal character name}}
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#define ABC \u0060 // expected-error {{character '`' cannot be specified by a universal character name}}
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int GH62133_a\u0024; // expected-error {{character '$' cannot be specified by a universal character name}} \
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// expected-error {{}}
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int GH62133_b\u0040; // expected-error {{character '@' cannot be specified by a universal character name}} \
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// expected-error {{}}
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int GH62133_c\u0060; // expected-error {{character '`' cannot be specified by a universal character name}} \
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// expected-error {{}}
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