--- /dev/null
+// RUN: rm -rf %t
+// RUN: mkdir %t
+// RUN: c-index-test -test-load-source all -comments-xml-schema=%S/../../bindings/xml/comment-xml-schema.rng %s > %t/out
+// RUN: FileCheck %s < %t/out
+
+// Ensure that XML we generate is not invalid.
+// RUN: FileCheck %s -check-prefix=WRONG < %t/out
+// WRONG-NOT: CommentXMLInvalid
+
+// rdar://12378714
+
+/**
+ * \brief This is a protocol definition
+*/
+@protocol MyProto
+@optional
+/**
+ * \brief MethodMyProto method
+ * \param[in] anObject input value
+ * \param[in] range output value is unsigned int
+ * \result return index
+ */
+- (unsigned int)MethodMyProto:(id)anObject inRange:(unsigned int)range;
+/**
+ * \brief PropertyMyProto - This is protocol's property.
+*/
+@property (copy) id PropertyMyProto;
+/**
+ * \brief ClassMethodMyProto
+*/
++ ClassMethodMyProto;
+@end
+// CHECK: <Declaration>@protocol MyProto\n@end</Declaration>
+// CHECK: <Declaration>- (unsigned int) MethodMyProto:(id)anObject inRange:(unsigned int)range</Declaration>
+// CHECK: <Declaration>@optional\n@property ( readwrite,copy,atomic ) id PropertyMyProto</Declaration>
+// CHECK: <Declaration>+ (id) ClassMethodMyProto</Declaration>
+
+/**
+ * \brief NSObject is the root class.
+*/
+@interface NSObject {
+/**
+ * \brief IvarNSObject
+*/
+ id IvarNSObject;
+}
+@end
+// CHECK: Declaration>@interface NSObject{\n id IvarNSObject;\n}\n@end</Declaration>
+// CHECK: <Declaration>id IvarNSObject</Declaration>
+
+/**
+ * \brief MyClass - primary class.
+*/
+@interface MyClass : NSObject<MyProto>
+{
+/**
+ * \brief IvarMyClass - IvarMyClass of values.
+*/
+ id IvarMyClass;
+}
+/**
+ * \brief MethodMyClass is instance method.
+*/
+- MethodMyClass;
+
+/**
+ * \brief ClassMethodMyClass is class method.
+*/
++ ClassMethodMyClass;
+
+/**
+ * \brief PropertyMyClass - This is class's property.
+*/
+@property (copy) id PropertyMyClass;
+@end
+// CHECK: <Declaration>@interface MyClass : NSObject<MyProto> {\n id IvarMyClass;\n}\n@end</Declaration>
+// CHECK: <Declaration>id IvarMyClass</Declaration>
+// CHECK: <Declaration>- (id) MethodMyClass</Declaration>
+// CHECK: <Declaration>+ (id) ClassMethodMyClass</Declaration>
+// CHECK: <Declaration>@property ( readwrite,copy,atomic ) id PropertyMyClass</Declaration
+
+/**
+ * \brief MyClass (Category) is private to MyClass.
+*/
+@interface MyClass (Category)
+/**
+ * \brief This is private to MyClass
+ */
+- (void)MethodMyClassCategory;
+
+/**
+ * \brief PropertyMyClassCategory - This is class's private property.
+*/
+@property (copy) id PropertyMyClassCategory;
+@end
+// CHECK: <Declaration>@interface MyClass(Category)\n@end</Declaration>
+// CHECK: <Declaration>- (void) MethodMyClassCategory</Declaration>
+// CHECK: <Declaration>@property ( readwrite,copy,atomic ) id PropertyMyClassCategory</Declaration>
+// CHECK: <Declaration>- (id) PropertyMyClassCategory</Declaration>
+// CHECK: <Declaration>- (void) setPropertyMyClassCategory:(id)arg</Declaration>
+
+/// @implementation's
+
+/**
+ * \brief implementation of MyClass class.
+*/
+@implementation MyClass {
+/**
+ * \brief IvarPrivateToMyClassImpl.
+*/
+ id IvarPrivateToMyClassImpl;
+}
+/**
+ * \brief MethodMyClass is instance method implementation.
+*/
+- MethodMyClass {
+ return 0;
+}
+
+/**
+ * \brief ClassMethodMyClass is class method implementation.
+*/
++ ClassMethodMyClass {
+ return 0;
+}
+@end
+// CHECK: <Declaration>@implementation MyClass{\n id IvarPrivateToMyClassImpl;\n id _PropertyMyClass;\n}\n@end</Declaration>
+// CHECK: <Declaration>id IvarPrivateToMyClassImpl</Declaration>
+// CHECK: <Declaration>- (id) MethodMyClass</Declaration>
+// CHECK: <Declaration>+ (id) ClassMethodMyClass</Declaration>
+
+/**
+ * \brief MyClass (Category) is implementation of private to MyClass.
+*/
+@implementation MyClass (Category)
+/**
+ * \brief This is private to MyClass
+ */
+- (void)MethodMyClassCategory {}
+/**
+ * \brief property getter
+*/
+- (id) PropertyMyClassCategory { return 0; }
+
+/**
+ * \brief property setter
+*/
+- (void) setPropertyMyClassCategory : (id) arg {}
+@end
+// CHECK: <Declaration>@implementation MyClass(Category)\n@end</Declaration>
+// CHECK: <Declaration>- (void) MethodMyClassCategory</Declaration>
+// CHECK: <Declaration>- (id) PropertyMyClassCategory</Declaration>
+// CHECK: <Declaration>- (void) setPropertyMyClassCategory:(id)arg</Declaration>
+
+/**
+ * \brief NSObject implementation
+*/
+@implementation NSObject
+@end
+// CHECK: <Declaration>@implementation NSObject@end</Declaration>