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 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 # 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