attr-nonnull.cpp revision 07d7e7a6b10f798459f350b792713db2fb3e9365 
1// RUN: %clang_cc1 -fsyntax-only -verify %s
2struct S {
3  static void f(const char*, const char*) __attribute__((nonnull(1)));
4
5  // GCC has a hidden 'this' argument in member functions, so the middle
6  // argument is the one that must not be null.
7  void g(const char*, const char*, const char*) __attribute__((nonnull(3)));
8
9  void h(const char*) __attribute__((nonnull(1))); // \
10      expected-error{{invalid for the implicit this argument}}
11};
12
13void test(S s) {
14  s.f(0, ""); // expected-warning{{null passed}}
15  s.f("", 0);
16  s.g("", 0, ""); // expected-warning{{null passed}}
17  s.g(0, "", 0);
18}
19