Issue warning for trivial cases of nonnull attributes
(on functions with no pointer arguments) but only when
the attribute has not been coming from a macro 
instantiation in a header file. Fixes first part
of radar 6857843.

llvm-svn: 114860
diff --git a/clang/test/SemaObjC/nonnull.h b/clang/test/SemaObjC/nonnull.h
new file mode 100644
index 0000000..f5a038f
--- /dev/null
+++ b/clang/test/SemaObjC/nonnull.h
@@ -0,0 +1,2 @@
+// rdar: //6857843
+#define NONNULL_ATTR __attribute__((nonnull))