1 // RUN: %clang_cc1 %s -fsyntax-only -std=c99 -verify 2 // RUN: %clang_cc1 %s -fsyntax-only -std=c11 -Wc99-compat -verify 3 // RUN: %clang_cc1 %s -fsyntax-only -x c++ -std=c++03 -Wc++11-compat -verify 4 // RUN: %clang_cc1 %s -fsyntax-only -x c++ -std=c++11 -Wc++98-compat -verify 5 6 // Identifier characters 7 extern char a\u01F6; // C11, C++11 8 extern char a\u00AA; // C99, C11, C++11 9 extern char a\u0384; // C++03, C11, C++11 10 extern char a\u0E50; // C99, C++03, C11, C++11 11 extern char a\uFFFF; // none 12 13 14 15 16 17 // Identifier initial characters 18 extern char \u0E50; // C++03, C11, C++11 19 extern char \u0300; // disallowed initially in C11/C++11, always in C99/C++03 20 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 # if __cplusplus >= 201103L 42 // C++11 43 // expected-warning@7 {{using this character in an identifier is incompatible with C++98}} 44 // expected-warning@8 {{using this character in an identifier is incompatible with C++98}} 45 // expected-error@11 {{expected ';'}} 46 // expected-error@19 {{expected unqualified-id}} 47 // expected-error@33 {{invalid universal character}} 48 49 # else 50 // C++03 51 // expected-error@7 {{expected ';'}} 52 // expected-error@8 {{expected ';'}} 53 // expected-error@11 {{expected ';'}} 54 // expected-error@19 {{expected unqualified-id}} 55 // expected-warning@33 {{universal character name refers to a surrogate character}} 56 57 # endif 58 #else 59 # if __STDC_VERSION__ >= 201112L 60 // C11 61 // expected-warning@7 {{using this character in an identifier is incompatible with C99}} 62 // expected-warning@9 {{using this character in an identifier is incompatible with C99}} 63 // expected-error@11 {{expected ';'}} 64 // expected-warning@18 {{starting an identifier with this character is incompatible with C99}} 65 // expected-error@19 {{expected identifier}} 66 // expected-error@33 {{invalid universal character}} 67 68 # else 69 // C99 70 // expected-error@7 {{expected ';'}} 71 // expected-error@9 {{expected ';'}} 72 // expected-error@11 {{expected ';'}} 73 // expected-error@18 {{expected identifier}} 74 // expected-error@19 {{expected identifier}} 75 // expected-error@33 {{invalid universal character}} 76 77 # endif 78 #endif 79
