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diff --git a/clang/test/SemaObjCXX/arc-overloading.mm b/clang/test/SemaObjCXX/arc-overloading.mm
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+++ b/clang/test/SemaObjCXX/arc-overloading.mm
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+// RUN: %clang_cc1 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify -fblocks -Wno-objc-root-class %s
+
+// Simple ownership conversions + diagnostics.
+int &f0(id __strong const *); // expected-note{{candidate function not viable: 1st argument ('__weak id *') has __weak ownership, but parameter has __strong ownership}}
+
+void test_f0() {
+  id __strong *sip;
+  id __strong const *csip;
+  id __weak *wip;
+  id __autoreleasing *aip;
+  id __unsafe_unretained *uip;
+
+  int &ir1 = f0(sip);
+  int &ir2 = f0(csip);
+  int &ir3 = f0(aip);
+  int &ir4 = f0(uip);
+  f0(wip); // expected-error{{no matching function for call to 'f0'}}
+}
+
+// Simple overloading
+int &f1(id __strong const *);
+float &f1(id __weak const *);
+
+void test_f1() {
+  id __strong *sip;
+  id __strong const *csip;
+  id __weak *wip;
+  id __autoreleasing *aip;
+  id __unsafe_unretained *uip;
+
+  int &ir1 = f1(sip);
+  int &ir2 = f1(csip);
+  float &fr1 = f1(wip);
+  int &ir3 = f1(aip);
+  int &ir4 = f1(uip);
+}
+
+// Simple overloading
+int &f2(id __strong const *); // expected-note{{candidate function}}
+float &f2(id __autoreleasing const *); // expected-note{{candidate function}}
+
+void test_f2() {
+  id __strong *sip;
+  id __strong const *csip;
+  id __weak *wip;
+  id __autoreleasing *aip;
+  id __unsafe_unretained *uip;
+
+  // Prefer non-ownership conversions to ownership conversions.
+  int &ir1 = f2(sip);
+  int &ir2 = f2(csip);
+  float &fr1 = f2(aip);
+
+  f2(uip); // expected-error{{call to 'f2' is ambiguous}}
+}
+
+// Writeback conversion
+int &f3(id __autoreleasing *); // expected-note{{candidate function not viable: 1st argument ('__unsafe_unretained id *') has __unsafe_unretained ownership, but parameter has __autoreleasing ownership}}
+
+void test_f3() {
+  id __strong sip;
+  id __weak wip;
+  id __autoreleasing aip;
+  id __unsafe_unretained uip;
+
+  int &ir1 = f3(&sip);
+  int &ir2 = f3(&wip);
+  int &ir3 = f3(&aip);
+  f3(&uip); // expected-error{{no matching function for call to 'f3'}}
+}
+
+// Writeback conversion vs. no conversion
+int &f4(id __autoreleasing *);
+float &f4(id __strong *);
+
+void test_f4() {
+  id __strong sip;
+  id __weak wip;
+  id __autoreleasing aip;
+  extern __weak id weak_global_ptr;
+
+  float &fr1 = f4(&sip);
+  int &ir1 = f4(&wip);
+  int &ir2 = f4(&aip);
+  int &ir3 = f4(&weak_global_ptr); // expected-error{{passing address of non-local object to __autoreleasing parameter for write-back}}
+}
+
+// Writeback conversion vs. other conversion.
+int &f5(id __autoreleasing *);
+float &f5(id const __unsafe_unretained *);
+
+void test_f5() {
+  id __strong sip;
+  id __weak wip;
+  id __autoreleasing aip;
+
+  int &ir1 = f5(&wip);
+  float &fr1 = f5(&sip);
+  int &ir2 = f5(&aip);
+}
+
+@interface A
+@end
+
+int &f6(id __autoreleasing *);
+float &f6(id const __unsafe_unretained *);
+
+void test_f6() {
+  A* __strong sip;
+  A* __weak wip;
+  A* __autoreleasing aip;
+
+  int &ir1 = f6(&wip);
+  float &fr1 = f6(&sip);
+  int &ir2 = f6(&aip);
+}
+
+// Reference binding
+void f7(__strong id&); // expected-note{{candidate function not viable: 1st argument ('__weak id') has __weak ownership, but parameter has __strong ownership}} \
+ // expected-note{{candidate function not viable: 1st argument ('__autoreleasing id') has __autoreleasing ownership, but parameter has __strong ownership}} \
+ // expected-note{{candidate function not viable: 1st argument ('__unsafe_unretained id') has __unsafe_unretained ownership, but parameter has __strong ownership}}
+
+void test_f7() {
+  __strong id strong_id;
+  __weak id weak_id;
+  __autoreleasing id autoreleasing_id;
+  __unsafe_unretained id unsafe_id;
+  f7(strong_id);
+  f7(weak_id); // expected-error{{no matching function for call to 'f7'}}
+  f7(autoreleasing_id); // expected-error{{no matching function for call to 'f7'}}
+  f7(unsafe_id); // expected-error{{no matching function for call to 'f7'}}
+}
+
+void f8(const __strong id&);
+
+void test_f8() {
+  __strong id strong_id;
+  __weak id weak_id;
+  __autoreleasing id autoreleasing_id;
+  __unsafe_unretained id unsafe_id;
+
+  f8(strong_id);
+  f8(weak_id);
+  f8(autoreleasing_id);
+  f8(unsafe_id);
+}
+
+int &f9(__strong id&);
+float &f9(const __autoreleasing id&);
+
+void test_f9() {
+  __strong id strong_id;
+  __weak id weak_id;
+  __autoreleasing id autoreleasing_id;
+  __unsafe_unretained id unsafe_id;
+
+  int &ir1 = f9(strong_id);
+  float &fr1 = f9(autoreleasing_id);
+  float &fr2 = f9(unsafe_id);
+  float &fr2a = f9(weak_id);
+
+  __strong A *strong_a;
+  __weak A *weak_a;
+  __autoreleasing A *autoreleasing_a;
+  __unsafe_unretained A *unsafe_unretained_a;
+  float &fr3 = f9(strong_a);
+  float &fr4 = f9(autoreleasing_a);
+  float &fr5 = f9(unsafe_unretained_a);
+  float &fr6 = f9(weak_a);
+
+  const __autoreleasing id& ar1 = strong_a;
+  const __autoreleasing id& ar2 = autoreleasing_a;
+  const __autoreleasing id& ar3 = unsafe_unretained_a;
+  const __autoreleasing id& ar4 = weak_a;
+}
+
+// rdar://9790531
+void f9790531(void *inClientData); // expected-note {{candidate function not viable: cannot implicitly convert argument of type 'MixerEQGraphTestDelegate *const __strong' to 'void *' for 1st argument under ARC}}
+void f9790531_1(struct S*inClientData); // expected-note {{candidate function not viable}}
+void f9790531_2(char * inClientData); // expected-note {{candidate function not viable}}
+
+@class UIApplication;
+
+@interface MixerEQGraphTestDelegate
+- (void)applicationDidFinishLaunching;
+@end
+
+@implementation MixerEQGraphTestDelegate
+- (void)applicationDidFinishLaunching {
+    f9790531(self); // expected-error {{no matching function for call to 'f9790531'}}
+    f9790531_1(self); // expected-error {{no matching function for call to 'f9790531_1'}}
+    f9790531_2(self); // expected-error {{no matching function for call to 'f9790531_2'}}
+}
+@end
+
+class rdar10142572 {
+  id f() __attribute__((ns_returns_retained));
+  id g(); // expected-note{{previous declaration}}
+};
+
+id rdar10142572::f() { return 0; } // okay: merged down
+id __attribute__((ns_returns_retained)) rdar10142572::g() { return 0; } // expected-error{{function declared with the ns_returns_retained attribute was previously declared without the ns_returns_retained attribute}}