Chandler Carruth | 07d7e7a | 2010-11-16 08:35:43 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
| 2 | struct S { |
Nick Lewycky | 909a70d | 2011-03-25 01:44:32 +0000 | [diff] [blame] | 3 | S(const char *) __attribute__((nonnull(2))); |
| 4 | |
Chandler Carruth | 07d7e7a | 2010-11-16 08:35:43 +0000 | [diff] [blame] | 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 | |
Nick Lewycky | 909a70d | 2011-03-25 01:44:32 +0000 | [diff] [blame] | 15 | void test() { |
| 16 | S s(0); // expected-warning{{null passed}} |
| 17 | |
Chandler Carruth | 07d7e7a | 2010-11-16 08:35:43 +0000 | [diff] [blame] | 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 | } |
Douglas Gregor | de43632 | 2010-12-15 15:41:46 +0000 | [diff] [blame] | 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 | } |
Nick Lewycky | 3edf387 | 2013-01-23 05:08:29 +0000 | [diff] [blame] | 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 | } |
Nick Lewycky | 9b7ea0d | 2013-01-24 02:03:08 +0000 | [diff] [blame] | 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 | } |