1 // RUN: %clang_cc1 %s -verify -fsyntax-only -Werror=implicit-function-declaration
2
3 /// -Werror-implicit-function-declaration is a deprecated alias used by many projects.
4 // RUN: %clang_cc1 %s -verify -fsyntax-only -Werror-implicit-function-declaration
5
6 typedef int int32_t;
7 typedef unsigned char Boolean;
8
9 extern int printf(__const char *__restrict __format, ...); // expected-note{{'printf' declared here}}
10
func()11 void func() {
12 int32_t *vector[16];
13 const char compDesc[16 + 1];
14 int32_t compCount = 0;
15 if (_CFCalendarDecomposeAbsoluteTimeV(compDesc, vector, compCount)) { // expected-error {{implicit declaration of function '_CFCalendarDecomposeAbsoluteTimeV' is invalid in C99}} expected-note {{previous implicit declaration}}
16 }
17
18 printg("Hello, World!\n"); // expected-error{{implicit declaration of function 'printg' is invalid in C99}} \
19 // expected-note{{did you mean 'printf'?}}
20
21 __builtin_is_les(1, 3); // expected-error{{use of unknown builtin '__builtin_is_les'}}
22 }
_CFCalendarDecomposeAbsoluteTimeV(const char * componentDesc,int32_t ** vector,int32_t count)23 Boolean _CFCalendarDecomposeAbsoluteTimeV(const char *componentDesc, int32_t **vector, int32_t count) { // expected-error {{conflicting types}}
24 return 0;
25 }
26
27
28 // Test the typo-correction callback in Sema::ImplicitlyDefineFunction
29 extern int sformatf(char *str, __const char *__restrict __format, ...); // expected-note{{'sformatf' declared here}}
test_implicit()30 void test_implicit() {
31 int formats = 0;
32 formatd("Hello, World!\n"); // expected-error{{implicit declaration of function 'formatd' is invalid in C99}} \
33 // expected-note{{did you mean 'sformatf'?}}
34 }
35