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// RUN: clang-cc -fblocks -fsyntax-only -verify %s
@class NSObject;
int f1(int x) __attribute__((nonnull)); // expected-warning{{'nonnull' attribute applied to function with no pointer arguments}}
int f2(int *x) __attribute__ ((nonnull (1)));
int f3(int *x) __attribute__ ((nonnull (0))); // expected-error {{'nonnull' attribute parameter 1 is out of bounds}}
int f4(int *x, int *y) __attribute__ ((nonnull (1,2)));
int f5(int *x, int *y) __attribute__ ((nonnull (2,1)));
int f6(NSObject *x) __attribute__ ((nonnull (1))); // no-warning
int f7(NSObject *x) __attribute__ ((nonnull)); // no-warning
extern void func1 (void (^block1)(), void (^block2)(), int) __attribute__((nonnull));
extern void func3 (void (^block1)(), int, void (^block2)(), int)
__attribute__((nonnull(1,3)));
extern void func4 (void (^block1)(), void (^block2)()) __attribute__((nonnull(1)))
__attribute__((nonnull(2)));
void
foo (int i1, int i2, int i3, void (^cp1)(), void (^cp2)(), void (^cp3)())
{
func1(cp1, cp2, i1);
func1(0, cp2, i1); // expected-warning {{null passed to a callee which requires a non-null argument}}
func1(cp1, 0, i1); // expected-warning {{null passed to a callee which requires a non-null argument}}
func1(cp1, cp2, 0);
func3(0, i2, cp3, i3); // expected-warning {{null passed to a callee which requires a non-null argument}}
func3(cp3, i2, 0, i3); // expected-warning {{null passed to a callee which requires a non-null argument}}
func4(0, cp1); // expected-warning {{null passed to a callee which requires a non-null argument}}
func4(cp1, 0); // expected-warning {{null passed to a callee which requires a non-null argument}}
// Shouldn't these emit warnings? Clang doesn't, and neither does GCC. It
// seems that the checking should handle Objective-C pointers.
func6((NSObject*) 0); // no-warning
func7((NSObject*) 0); // no-warning
}
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