derek.holloway
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25 lines
1.0 KiB
C
25 lines
1.0 KiB
C
// RUN: %clang_cc1 -verify=c11,both -std=c11 %s
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// RUN: %clang_cc1 -verify=c23,both -std=c23 %s
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/* WG14 N1518: Clang 15
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* Recommendations for extended identifier characters for C and C++
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*
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* This paper effectively adopts UAX #31, which was later officially adopted
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* for C23 via WG14 N2836 and supersedes N1518.
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*/
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// This file takes test cases from clang/test/C/C23/n2836_n2939.c.
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// This file contains Unicode characters; please do not "fix" them!
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// This was fine in C11, is now an error in C23.
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extern int ٢; // c23-error {{character <U+0662> not allowed at the start of an identifier}} \
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c23-warning {{declaration does not declare anything}}
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// This was an error in C11 but is an extension in C23.
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extern int ∞; // c11-error {{unexpected character <U+221E>}} \
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c11-warning {{declaration does not declare anything}} \
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c23-warning {{mathematical notation character <U+221E> in an identifier is a Clang extension}}
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int \u1DC0; // both-error {{expected identifier or '('}}
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int e\u1DC0; // Ok
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