1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 struct S { 3 S(const char *) __attribute__((nonnull(2))); 4 5 static void f(const char*, const char*) __attribute__((nonnull(1))); 6 7 // GCC has a hidden 'this' argument in member functions, so the middle 8 // argument is the one that must not be null. 9 void g(const char*, const char*, const char*) __attribute__((nonnull(3))); 10 11 void h(const char*) __attribute__((nonnull(1))); // \ 12 expected-error{{invalid for the implicit this argument}} 13 }; 14 15 void test() { 16 S s(0); // expected-warning{{null passed}} 17 18 s.f(0, ""); // expected-warning{{null passed}} 19 s.f("", 0); 20 s.g("", 0, ""); // expected-warning{{null passed}} 21 s.g(0, "", 0); 22 } 23 24 namespace rdar8769025 { 25 __attribute__((nonnull)) void f0(int *&p); 26 __attribute__((nonnull)) void f1(int * const &p); 27 __attribute__((nonnull(2))) void f2(int i, int * const &p); 28 29 void test_f1() { 30 f1(0); // expected-warning{{null passed to a callee which requires a non-null argument}} 31 f2(0, 0); // expected-warning{{null passed to a callee which requires a non-null argument}} 32 } 33 } 34 35 namespace test3 { 36 __attribute__((nonnull(1))) void f(void *ptr); 37 38 void g() { 39 f(static_cast<char*>((void*)0)); // expected-warning{{null passed}} 40 f(static_cast<char*>(0)); // expected-warning{{null passed}} 41 } 42 } 43 44 namespace test4 { 45 struct X { 46 bool operator!=(const void *) const __attribute__((nonnull(2))); 47 }; 48 bool operator==(const X&, const void *) __attribute__((nonnull(2))); 49 50 void test(const X& x) { 51 (void)(x == 0); // expected-warning{{null passed}} 52 (void)(x != 0); // expected-warning{{null passed}} 53 } 54 } 55
