You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
3.5 KiB
106 lines
3.5 KiB
// RUN: %clang_cc1 %s -fsyntax-only -std=c99 -pedantic -verify -Wundef
|
|
// RUN: %clang_cc1 %s -fsyntax-only -x c++ -pedantic -verify -Wundef
|
|
// RUN: not %clang_cc1 %s -fsyntax-only -std=c99 -pedantic -Wundef 2>&1 | FileCheck -strict-whitespace %s
|
|
|
|
#define \u00FC
|
|
#define a\u00FD() 0
|
|
#ifndef \u00FC
|
|
#error "This should never happen"
|
|
#endif
|
|
|
|
#if a\u00FD()
|
|
#error "This should never happen"
|
|
#endif
|
|
|
|
#if a\U000000FD()
|
|
#error "This should never happen"
|
|
#endif
|
|
|
|
#if \uarecool // expected-warning{{incomplete universal character name; treating as '\' followed by identifier}} expected-error {{invalid token at start of a preprocessor expression}}
|
|
#endif
|
|
#if \uwerecool // expected-warning{{\u used with no following hex digits; treating as '\' followed by identifier}} expected-error {{invalid token at start of a preprocessor expression}}
|
|
#endif
|
|
#if \U0001000 // expected-warning{{incomplete universal character name; treating as '\' followed by identifier}} expected-error {{invalid token at start of a preprocessor expression}}
|
|
#endif
|
|
|
|
// Make sure we reject disallowed UCNs
|
|
#define \ufffe // expected-error {{macro name must be an identifier}}
|
|
#define \U10000000 // expected-error {{macro name must be an identifier}}
|
|
#define \u0061 // expected-error {{character 'a' cannot be specified by a universal character name}} expected-error {{macro name must be an identifier}}
|
|
|
|
#define a\u0024
|
|
|
|
#if \u0110 // expected-warning {{is not defined, evaluates to 0}}
|
|
#endif
|
|
|
|
|
|
#define \u0110 1 / 0
|
|
#if \u0110 // expected-error {{division by zero in preprocessor expression}}
|
|
#endif
|
|
|
|
#define STRINGIZE(X) # X
|
|
|
|
extern int check_size[sizeof(STRINGIZE(\u0112)) == 3 ? 1 : -1];
|
|
|
|
// Check that we still diagnose disallowed UCNs in #if 0 blocks.
|
|
// C99 5.1.1.2p1 and C++11 [lex.phases]p1 dictate that preprocessor tokens are
|
|
// formed before directives are parsed.
|
|
// expected-error@+4 {{character 'a' cannot be specified by a universal character name}}
|
|
#if 0
|
|
#define \ufffe // okay
|
|
#define \U10000000 // okay
|
|
#define \u0061 // error, but -verify only looks at comments outside #if 0
|
|
#endif
|
|
|
|
|
|
// A UCN formed by token pasting is undefined in both C99 and C++.
|
|
// Right now we don't do anything special, which causes us to coincidentally
|
|
// accept the first case below but reject the second two.
|
|
#define PASTE(A, B) A ## B
|
|
extern int PASTE(\, u00FD);
|
|
extern int PASTE(\u, 00FD); // expected-warning{{\u used with no following hex digits}}
|
|
extern int PASTE(\u0, 0FD); // expected-warning{{incomplete universal character name}}
|
|
#ifdef __cplusplus
|
|
// expected-error@-3 {{expected unqualified-id}}
|
|
// expected-error@-3 {{expected unqualified-id}}
|
|
#else
|
|
// expected-error@-6 {{expected identifier}}
|
|
// expected-error@-6 {{expected identifier}}
|
|
#endif
|
|
|
|
|
|
// A UCN produced by line splicing is valid in C99 but undefined in C++.
|
|
// Since undefined behavior can do anything including working as intended,
|
|
// we just accept it in C++ as well.;
|
|
#define newline_1_\u00F\
|
|
C 1
|
|
#define newline_2_\u00\
|
|
F\
|
|
C 1
|
|
#define newline_3_\u\
|
|
00\
|
|
FC 1
|
|
#define newline_4_\\
|
|
u00FC 1
|
|
#define newline_5_\\
|
|
u\
|
|
\
|
|
0\
|
|
0\
|
|
F\
|
|
C 1
|
|
|
|
#if (newline_1_\u00FC && newline_2_\u00FC && newline_3_\u00FC && \
|
|
newline_4_\u00FC && newline_5_\u00FC)
|
|
#else
|
|
#error "Line splicing failed to produce UCNs"
|
|
#endif
|
|
|
|
|
|
#define capital_u_\U00FC
|
|
// expected-warning@-1 {{incomplete universal character name}} expected-note@-1 {{did you mean to use '\u'?}} expected-warning@-1 {{whitespace}}
|
|
// CHECK: note: did you mean to use '\u'?
|
|
// CHECK-NEXT: #define capital_u_\U00FC
|
|
// CHECK-NEXT: {{^ \^}}
|
|
// CHECK-NEXT: {{^ u}}
|