1 // RUN: %clang_cc1 %s -fsyntax-only -std=c99 -verify 2 // RUN: %clang_cc1 %s -fsyntax-only -std=c2x -Wc99-compat -verify 3 // RUN: %clang_cc1 %s -fsyntax-only -std=c11 -Wc99-compat -verify 4 // RUN: %clang_cc1 %s -fsyntax-only -x c++ -std=c++03 -Wc++11-compat -verify 5 // RUN: %clang_cc1 %s -fsyntax-only -x c++ -std=c++11 -Wc++98-compat -verify 6 7 // Identifier characters 8 extern char a\u01F6; // C11, C++11 9 extern char a\u00AA; // C99, C11, C++11 10 extern char a\u0384; // C++03, C11, C++11 11 extern char a\u0E50; // C99, C++03, C11, C++11 12 extern char a\uFFFF; // none 13 14 15 16 17 // Identifier initial characters 18 extern char \u0E50; // C++03, C11, C++11 19 extern char \u0300; // disallowed in C99/C++03 20 extern char \u0D61; // C99, C11, C++03, C++11 21 22 23 24 25 26 27 28 // Disallowed everywhere 29 #define A \u0000 // expected-error{{control character}} 30 #define B \u001F // expected-error{{control character}} 31 #define C \u007F // expected-error{{control character}} 32 #define D \u009F // expected-error{{control character}} 33 #define E \uD800 // C++03 allows UCNs representing surrogate characters! 34 35 36 37 38 39 40 #if __cplusplus 41 // expected-error@10 {{character <U+0384> not allowed in an identifier}} 42 // expected-error@12 {{character <U+FFFF> not allowed in an identifier}} 43 // expected-error@18 {{expected unqualified-id}} 44 # if __cplusplus >= 201103L 45 // C++11 46 // expected-error@19 {{expected unqualified-id}} 47 // expected-error@33 {{invalid universal character}} 48 49 # else 50 // C++03 51 // expected-error@19 {{expected unqualified-id}} 52 // expected-warning@33 {{universal character name refers to a surrogate character}} 53 54 # endif 55 #else 56 # if __STDC_VERSION__ >= 202311L 57 // C23 58 // expected-warning@8 {{using this character in an identifier is incompatible with C99}} 59 // expected-error@10 {{character <U+0384> not allowed in an identifier}} 60 // expected-error@12 {{character <U+FFFF> not allowed in an identifier}} 61 // expected-error@18 {{expected identifier}} 62 // expected-error@19 {{expected identifier}} 63 // expected-error@33 {{invalid universal character}} 64 # elif __STDC_VERSION__ >= 201112L 65 // C11 66 // expected-warning@8 {{using this character in an identifier is incompatible with C99}} 67 // expected-warning@10 {{using this character in an identifier is incompatible with C99}} 68 // expected-error@12 {{character <U+FFFF> not allowed in an identifier}} 69 // expected-warning@18 {{starting an identifier with this character is incompatible with C99}} 70 // expected-error@19 {{expected identifier}} 71 // expected-error@33 {{invalid universal character}} 72 73 # else 74 // C99 75 // expected-error@8 {{not allowed in an identifier}} 76 // expected-error@10 {{not allowed in an identifier}} 77 // expected-error@12 {{not allowed in an identifier}} 78 // expected-error@18 {{expected identifier}} 79 // expected-error@19 {{expected identifier}} 80 // expected-error@33 {{invalid universal character}} 81 82 # endif 83 #endif 84 85 #define AAA\u0024 // expected-error {{character '$' cannot be specified by a universal character name}} \ 86 // expected-warning {{whitespace}} 87 #define AAB\u0040 // expected-error {{character '@' cannot be specified by a universal character name}} \ 88 // expected-warning {{whitespace}} 89 #define AAC\u0060 // expected-error {{character '`' cannot be specified by a universal character name}} \ 90 // expected-warning {{whitespace}} 91 92 #define ABA \u0024 // expected-error {{character '$' cannot be specified by a universal character name}} 93 #define ABB \u0040 // expected-error {{character '@' cannot be specified by a universal character name}} 94 #define ABC \u0060 // expected-error {{character '`' cannot be specified by a universal character name}} 95 96 int GH62133_a\u0024; // expected-error {{character '$' cannot be specified by a universal character name}} \ 97 // expected-error {{}} 98 int GH62133_b\u0040; // expected-error {{character '@' cannot be specified by a universal character name}} \ 99 // expected-error {{}} 100 int GH62133_c\u0060; // expected-error {{character '`' cannot be specified by a universal character name}} \ 101 // expected-error {{}} 102