forked from OSchip/llvm-project
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
// RUN: %clang_cc1 -fsyntax-only -Wnonnull -Wnullability %s -verify
|
|
// rdar://19160762
|
|
|
|
#if __has_feature(nullability)
|
|
#else
|
|
# error nullability feature should be defined
|
|
#endif
|
|
|
|
|
|
int * _Nullable foo(int * _Nonnull x);
|
|
|
|
int *_Nonnull ret_nonnull();
|
|
|
|
int *foo(int *x) {
|
|
return 0;
|
|
}
|
|
|
|
int * _Nullable foo1(int * _Nonnull x); // expected-note {{previous declaration is here}}
|
|
|
|
int *foo1(int * _Nullable x) { // expected-warning {{nullability specifier '_Nullable' conflicts with existing specifier '_Nonnull'}}
|
|
return 0;
|
|
}
|
|
|
|
int * _Nullable foo2(int * _Nonnull x);
|
|
|
|
int *foo2(int * _Nonnull x) {
|
|
return 0;
|
|
}
|
|
|
|
int * _Nullable foo3(int * _Nullable x); // expected-note {{previous declaration is here}}
|
|
|
|
int *foo3(int * _Nonnull x) { // expected-warning {{nullability specifier '_Nonnull' conflicts with existing specifier '_Nullable'}}
|
|
return 0;
|
|
}
|
|
|
|
int * ret_nonnull() {
|
|
return 0; // expected-warning {{null returned from function that requires a non-null return value}}
|
|
}
|
|
|
|
#define SAFE_CALL(X) if (X) foo(X)
|
|
int main () {
|
|
foo(0); // expected-warning {{null passed to a callee that requires a non-null argument}}
|
|
(void)sizeof(foo(0)); // expect no diagnostic in unevaluated context.
|
|
SAFE_CALL(0); // expect no diagnostic for unreachable code.
|
|
}
|