derek.holloway
7502bf64a4
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84 lines
4.9 KiB
C
84 lines
4.9 KiB
C
// RUN: %clang_cc1 -x c -std=c2x -fsyntax-only -verify %s
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// RUN: %clang_cc1 -x c -std=c2x -E -DPP_ONLY=1 %s | FileCheck %s --strict-whitespace
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/* WG14 N2836: Clang 15
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* Identifier Syntax using Unicode Standard Annex 31
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*/
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/* WG14 N2939: Clang 15
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* Identifier Syntax Fixes
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*/
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// Some of the tests below are derived from clang/test/Lexer/unicode.c.
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// This file contains Unicode characters; please do not "fix" them!
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// No diagnostics for pragma directives.
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#pragma mark ¡Unicode!
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// lone non-identifier characters are allowed in preprocessing.
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#define COPYRIGHT Copyright © 2012
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#define XSTR(X) #X
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#define STR(X) XSTR(X)
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static const char *copyright = STR(COPYRIGHT); // no-warning
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// CHECK: static const char *copyright = "Copyright © {{2012}}";
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#if PP_ONLY
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COPYRIGHT
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// CHECK: Copyright © {{2012}}
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#endif
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// The characters in the following identifiers are no longer valid as either
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// start or continuation characters as of C23. These are taken from section 1
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// of N2836.
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extern int \N{CONSTRUCTION WORKER}; // expected-error {{expected identifier or '('}}
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extern int X\N{CONSTRUCTION WORKER}; // expected-error {{character <U+1F477> not allowed in an identifier}}
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extern int \U0001F477; // expected-error {{expected identifier or '('}}
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extern int X\U0001F477; // expected-error {{character <U+1F477> not allowed in an identifier}}
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extern int 👷; // expected-error {{unexpected character <U+1F477>}} \
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// expected-warning {{declaration does not declare anything}}
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extern int X👷; // expected-error {{character <U+1F477> not allowed in an identifier}}
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extern int 🕐; // expected-error {{unexpected character <U+1F550>}} \
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// expected-warning {{declaration does not declare anything}}
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extern int X🕐; // expected-error {{character <U+1F550> not allowed in an identifier}}
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extern int 💀; // expected-error {{unexpected character <U+1F480>}} \
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// expected-warning {{declaration does not declare anything}}
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extern int X💀; // expected-error {{character <U+1F480> not allowed in an identifier}}
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extern int 👊; // expected-error {{unexpected character <U+1F44A>}} \
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// expected-warning {{declaration does not declare anything}}
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extern int X👊; // expected-error {{character <U+1F44A> not allowed in an identifier}}
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extern int 🚀; // expected-error {{unexpected character <U+1F680>}} \
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// expected-warning {{declaration does not declare anything}}
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extern int X🚀; // expected-error {{character <U+1F680> not allowed in an identifier}}
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extern int 😀; // expected-error {{unexpected character <U+1F600>}} \
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// expected-warning {{declaration does not declare anything}}
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extern int X😀; // expected-error {{character <U+1F600> not allowed in an identifier}}
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// The characters in the following identifiers are not allowed as start
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// characters, but are allowed as continuation characters.
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extern int \N{ARABIC-INDIC DIGIT ZERO}; // expected-error {{expected identifier or '('}}
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extern int X\N{ARABIC-INDIC DIGIT ZERO};
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extern int \u0661; // expected-error {{expected identifier or '('}}
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extern int X\u0661;
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extern int ٢; // expected-error {{character <U+0662> not allowed at the start of an identifier}} \\
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// expected-warning {{declaration does not declare anything}}
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extern int X٠;
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// The characters in the following identifiers are not valid start or
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// continuation characters in the standard, but are accepted as a conforming
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// extension.
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extern int \N{SUPERSCRIPT ZERO}; // expected-error {{expected identifier or '('}}
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extern int X\N{SUPERSCRIPT ZERO}; // expected-warning {{mathematical notation character <U+2070> in an identifier is a Clang extension}}
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extern int \u00B9; // expected-error {{expected identifier or '('}}
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extern int X\u00B9; // expected-warning {{mathematical notation character <U+00B9> in an identifier is a Clang extension}}
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extern int ²; // expected-error {{character <U+00B2> not allowed at the start of an identifier}} \\
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// expected-warning {{declaration does not declare anything}}
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extern int X²; // expected-warning {{mathematical notation character <U+00B2> in an identifier is a Clang extension}}
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extern int \N{PARTIAL DIFFERENTIAL}; // expected-warning {{mathematical notation character <U+2202> in an identifier is a Clang extension}}
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extern int X\N{PARTIAL DIFFERENTIAL}; // expected-warning {{mathematical notation character <U+2202> in an identifier is a Clang extension}}
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extern int \u2207; // expected-warning {{mathematical notation character <U+2207> in an identifier is a Clang extension}}
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extern int X\u2207; // expected-warning {{mathematical notation character <U+2207> in an identifier is a Clang extension}}
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extern int ∞; // expected-warning {{mathematical notation character <U+221E> in an identifier is a Clang extension}}
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extern int X∞; // expected-warning {{mathematical notation character <U+221E> in an identifier is a Clang extension}}
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