clang/test/Preprocessor/utf8-allowed-chars.c

   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 // Note: This file contains Unicode characters; please do not remove them!
   7
   8 // Identifier characters
   9 extern char aǶ; // C11, C++11
  10 extern char aª; // C99, C11, C++11
  11 extern char a΄; // C++03, C11, C++11
  12 extern char a๐; // C99, C++03, C11, C++11
  13 extern char a﹅; // none
  14 extern char x̀; // C11, C++11. Note that this does not have a composed form.
  15
  16
  17
  18
  19 // Identifier initial characters
  20 extern char ๐; // C++03, C11, C++11
  21 extern char ̀; // disallowed initially in C11/C++, always in C99
  22
  23
  24
  25
  26 #if __cplusplus
  27 // expected-error@11 {{not allowed in an identifier}}
  28 // expected-error@13 {{not allowed in an identifier}}
  29 // expected-error@20 {{character <U+0E50> not allowed at the start of an identifier}}
  30 // expected-error@21 {{character <U+0300> not allowed at the start of an identifier}}
  31 // expected-warning@20 {{declaration does not declare anything}}
  32 // expected-warning@21 {{declaration does not declare anything}}
  33
  34 #else
  35 # if __STDC_VERSION__ >= 201112L
  36 // C11
  37 // expected-warning@9 {{using this character in an identifier is incompatible with C99}}
  38 // expected-warning@11 {{using this character in an identifier is incompatible with C99}}
  39 // expected-error@13 {{not allowed in an identifier}}
  40 // expected-warning@14 {{using this character in an identifier is incompatible with C99}}
  41 // expected-warning@20 {{starting an identifier with this character is incompatible with C99}}
  42 // expected-warning@21 {{declaration does not declare anything}}
  43 // expected-error@21 {{not allowed at the start of an identifier}}
  44
  45 # else
  46 // C99
  47 // expected-error@9 {{not allowed in an identifier}}
  48 // expected-error@11 {{not allowed in an identifier}}
  49 // expected-error@13 {{not allowed in an identifier}}
  50 // expected-error@14 {{not allowed in an identifier}}
  51 // expected-error@20 {{character <U+0E50> not allowed at the start of an identifier}}
  52 // expected-error@21 {{unexpected character <U+0300>}}
  53 // expected-warning@20 {{declaration does not declare anything}}
  54 // expected-warning@21 {{declaration does not declare anything}}
  55
  56
  57 # endif
  58 #endif