1// RUN: %clang_cc1 -fsyntax-only -verify %s 2// rdar://9584012 3 4typedef struct { 5 char *str; 6} Class; 7 8typedef union { 9 Class *object; 10} Instance __attribute__((transparent_union)); 11 12__attribute__((nonnull(1))) void Class_init(Instance this, char *str) { 13 this.object->str = str; 14} 15 16int main(void) { 17 Class *obj; 18 Class_init(0, "Hello World"); // expected-warning {{null passed to a callee which requires a non-null argument}} 19 Class_init(obj, "Hello World"); 20} 21 22void foo(const char *str) __attribute__((nonnull("foo"))); // expected-error{{'nonnull' attribute requires parameter 1 to be an integer constant}} 23void bar(int i) __attribute__((nonnull(1))); // expected-warning {{'nonnull' attribute only applies to pointer arguments}} expected-warning {{'nonnull' attribute applied to function with no pointer arguments}} 24 25void baz(__attribute__((nonnull)) const char *str); 26void baz2(__attribute__((nonnull(1))) const char *str); // expected-warning {{'nonnull' attribute when used on parameters takes no arguments}} 27void baz3(__attribute__((nonnull)) int x); // expected-warning {{'nonnull' attribute only applies to pointer arguments}} 28 29void test_baz() { 30 baz(0); // expected-warning {{null passed to a callee which requires a non-null argument}} 31 baz2(0); // no-warning 32 baz3(0); // no-warning 33} 34 35void test_void_returns_nonnull(void) __attribute__((returns_nonnull)); // expected-warning {{'returns_nonnull' attribute only applies to return values that are pointers}} 36int test_int_returns_nonnull(void) __attribute__((returns_nonnull)); // expected-warning {{'returns_nonnull' attribute only applies to return values that are pointers}} 37void *test_ptr_returns_nonnull(void) __attribute__((returns_nonnull)); // no-warning 38 39int i __attribute__((nonnull)); // expected-warning {{'nonnull' attribute only applies to functions, methods, and parameters}} 40int j __attribute__((returns_nonnull)); // expected-warning {{'returns_nonnull' attribute only applies to functions and methods}} 41void *test_no_fn_proto() __attribute__((returns_nonnull)); // expected-warning {{'returns_nonnull' attribute only applies to functions and methods}} 42 43__attribute__((returns_nonnull)) 44void *test_bad_returns_null(void) { 45 return 0; // expected-warning {{null returned from function that requires a non-null return value}} 46} 47 48void PR18795(int (*g)(const char *h, ...) __attribute__((nonnull(1))) __attribute__((nonnull))) { 49 g(0); // expected-warning{{null passed to a callee which requires a non-null argument}} 50} 51void PR18795_helper() { 52 PR18795(0); // expected-warning{{null passed to a callee which requires a non-null argument}} 53} 54 55 56