llvm-project/clang/test/Lexer/unicode.c

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This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

// RUN: %clang_cc1 -fsyntax-only -verify -x c -std=c11 %s
// RUN: %clang_cc1 -fsyntax-only -verify -x c++ -std=c++11 %s
// RUN: %clang_cc1 -E -DPP_ONLY=1 %s -o %t
// RUN: FileCheck --strict-whitespace --input-file=%t %s
// This file contains Unicode characters; please do not "fix" them!
extern int x; // expected-warning {{treating Unicode character as whitespace}}
extern int x; // expected-warning {{treating Unicode character as whitespace}}
// CHECK: extern int {{x}}
// CHECK: extern int {{x}}
#pragma mark ¡Unicode!
#define COPYRIGHT Copyright © 2012
#define XSTR(X) #X
#define STR(X) XSTR(X)
static const char *copyright = STR(COPYRIGHT); // no-warning
// CHECK: static const char *copyright = "Copyright © {{2012}}";
#if PP_ONLY
COPYRIGHT
// CHECK: Copyright © {{2012}}
CHECK: The preprocessor should not complain about Unicode characters like ©.
#endif
// A 🌹 by any other name....
extern int 🌹;
int 🌵(int 🌻) { return 🌻+ 1; }
int main () {
int 🌷 = 🌵(🌹);
return 🌷;
}
int n; = 3; // expected-warning {{treating Unicode character <U+037E> as identifier character rather than as ';' symbol}}
int *nv = &n;; // expected-warning 2{{treating Unicode character <U+A789> as identifier character rather than as ':' symbol}}
// expected-warning@-1 {{treating Unicode character <U+037E> as identifier character rather than as ';' symbol}}
int vautoreturnx; // expected-warning 12{{treating Unicode character}}
int xx;
// expected-warning@-1 {{identifier contains Unicode character <U+2060> that is invisible in some environments}}
// expected-warning@-2 {{identifier contains Unicode character <U+FEFF> that is invisible in some environments}}
// expected-warning@-3 {{identifier contains Unicode character <U+200D> that is invisible in some environments}}
int foobar = 0; // expected-warning {{identifier contains Unicode character <U+200B> that is invisible in some environments}}
int x = foobar; // expected-error {{undeclared identifier}}
int foo; // expected-error {{non-ASCII character}}
#ifndef PP_ONLY
#define x // expected-error {{macro name must be an identifier}}
#endif