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// RUN: %clang_cc1 %s -verify -fsyntax-only -Werror=implicit-function-declaration -std=c99
// RUN: %clang_cc1 %s -verify -fsyntax-only -std=c11
// RUN: %clang_cc1 %s -verify=c2x -fsyntax-only -std=c2x
/// -Werror-implicit-function-declaration is a deprecated alias used by many projects.
// RUN: %clang_cc1 %s -verify -fsyntax-only -Werror-implicit-function-declaration
// c2x-note@*:* {{'__builtin_va_list' declared here}}
typedef int int32_t;
typedef unsigned char Boolean;
extern int printf(__const char *__restrict __format, ...); // expected-note{{'printf' declared here}} \
c2x-note {{'printf' declared here}}
void func(void) {
int32_t *vector[16];
const char compDesc[16 + 1];
int32_t compCount = 0;
if (_CFCalendarDecomposeAbsoluteTimeV(compDesc, vector, compCount)) { // expected-error {{call to undeclared function '_CFCalendarDecomposeAbsoluteTimeV'; ISO C99 and later do not support implicit function declarations}} \
expected-note {{previous implicit declaration}} \
c2x-error {{use of undeclared identifier '_CFCalendarDecomposeAbsoluteTimeV'}}
}
printg("Hello, World!\n"); // expected-error{{call to undeclared function 'printg'; ISO C99 and later do not support implicit function declarations}} \
expected-note{{did you mean 'printf'?}} \
c2x-error {{use of undeclared identifier 'printg'; did you mean 'printf'?}}
__builtin_is_les(1, 3); // expected-error{{use of unknown builtin '__builtin_is_les'}} \
c2x-error {{unknown type name '__builtin_is_les'; did you mean '__builtin_va_list'?}} \
c2x-error {{expected identifier or '('}} \
c2x-error {{expected ')'}} \
c2x-note {{to match this '('}}
}
Boolean _CFCalendarDecomposeAbsoluteTimeV(const char *componentDesc, int32_t **vector, int32_t count) { // expected-error {{conflicting types}}
return 0;
}
// Test the typo-correction callback in Sema::ImplicitlyDefineFunction
extern int sformatf(char *str, __const char *__restrict __format, ...); // expected-note{{'sformatf' declared here}}
void test_implicit(void) {
int formats = 0; // c2x-note {{'formats' declared here}}
formatd("Hello, World!\n"); // expected-error{{call to undeclared function 'formatd'; ISO C99 and later do not support implicit function declarations}} \
expected-note{{did you mean 'sformatf'?}} \
c2x-error {{use of undeclared identifier 'formatd'; did you mean 'formats'?}} \
c2x-error {{called object type 'int' is not a function or function pointer}}
}
void test_suggestion(void) {
bark(); // expected-error {{call to undeclared function 'bark'; ISO C99 and later do not support implicit function declarations}} \
c2x-error {{use of undeclared identifier 'bark'}}
bork(); // expected-error {{call to undeclared function 'bork'; ISO C99 and later do not support implicit function declarations}} \
c2x-error {{use of undeclared identifier 'bork'}}
}
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