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