src/llvm/tools/clang/test/SemaCXX/attr-nonnull.cpp

   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 }