1 files changed, 42 insertions, 0 deletions
diff --git a/test/SemaObjC/nonnull.m b/test/SemaObjC/nonnull.m
new file mode 100644
index 000000000000..869bbbd57e85
--- /dev/null
+++ b/test/SemaObjC/nonnull.m
@@ -0,0 +1,42 @@
+// 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
+}