--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/Modules/odr_hash.mm	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,330 @@
+// Clear and create directories
+// RUN: rm -rf %t
+// RUN: mkdir %t
+// RUN: mkdir %t/cache
+// RUN: mkdir %t/Inputs
+
+// Build first header file
+// RUN: echo "#define FIRST" >> %t/Inputs/first.h
+// RUN: cat %s               >> %t/Inputs/first.h
+
+// Build second header file
+// RUN: echo "#define SECOND" >> %t/Inputs/second.h
+// RUN: cat %s                >> %t/Inputs/second.h
+
+// Test that each header can compile
+// RUN: %clang_cc1 -fsyntax-only -x objective-c++ %t/Inputs/first.h -fblocks -fobjc-arc
+// RUN: %clang_cc1 -fsyntax-only -x objective-c++ %t/Inputs/second.h -fblocks -fobjc-arc
+
+// Build module map file
+// RUN: echo "module FirstModule {"     >> %t/Inputs/module.map
+// RUN: echo "    header \"first.h\""   >> %t/Inputs/module.map
+// RUN: echo "}"                        >> %t/Inputs/module.map
+// RUN: echo "module SecondModule {"    >> %t/Inputs/module.map
+// RUN: echo "    header \"second.h\""  >> %t/Inputs/module.map
+// RUN: echo "}"                        >> %t/Inputs/module.map
+
+// Run test
+// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t/cache -x objective-c++ -I%t/Inputs -verify %s -fblocks -fobjc-arc
+
+#if !defined(FIRST) && !defined(SECOND)
+#include "first.h"
+#include "second.h"
+#endif
+
+#if defined(FIRST) || defined(SECOND)
+@protocol P1
+@end
+
+@protocol P2
+@end
+
+@interface I1
+@end
+
+@interface I2 : I1
+@end
+
+@interface Interface1 <T : I1 *> {
+@public
+  T<P1> x;
+}
+@end
+
+@interface Interface2 <T : I1 *>
+@end
+
+@interface Interface3 <T : I1 *>
+@end
+
+@interface EmptySelectorSlot
+- (void)method:(int)arg;
+- (void)method:(int)arg :(int)empty;
+
+- (void)multiple:(int)arg1 args:(int)arg2 :(int)arg3;
+- (void)multiple:(int)arg1 :(int)arg2 args:(int)arg3;
+@end
+
+#endif
+
+#if defined(FIRST)
+struct S {
+  Interface1 *I;
+  decltype(I->x) x;
+  int y;
+};
+#elif defined(SECOND)
+struct S {
+  Interface1 *I;
+  decltype(I->x) x;
+  bool y;
+};
+#else
+S s;
+// expected-error@second.h:* {{'S::y' from module 'SecondModule' is not present in definition of 'S' in module 'FirstModule'}}
+// expected-note@first.h:* {{declaration of 'y' does not match}}
+#endif
+
+namespace Types {
+namespace Attributed {
+#if defined(FIRST)
+void invalid1() {
+  static double __attribute((objc_gc(strong))) *x;
+}
+void invalid2() {
+  static int __attribute((objc_gc(strong))) *x;
+}
+void valid() {
+  static int __attribute((objc_gc(strong))) *x;
+}
+#elif defined(SECOND)
+void invalid1() {
+  static int __attribute((objc_gc(strong))) *x;
+}
+void invalid2() {
+  static int __attribute((objc_gc(weak))) *x;
+}
+void valid() {
+  static int __attribute((objc_gc(strong))) *x;
+}
+#else
+auto function1 = invalid1;
+// expected-error@second.h:* {{Types::Attributed::invalid1' has different definitions in different modules; definition in module 'SecondModule' first difference is function body}}
+// expected-note@first.h:* {{but in 'FirstModule' found a different body}}
+auto function2 = invalid2;
+// expected-error@second.h:* {{'Types::Attributed::invalid2' has different definitions in different modules; definition in module 'SecondModule' first difference is function body}}
+// expected-note@first.h:* {{but in 'FirstModule' found a different body}}
+auto function3 = valid;
+#endif
+}  // namespace Attributed
+
+namespace BlockPointer {
+#if defined(FIRST)
+void invalid1() {
+  void (^x)(int);
+}
+void invalid2() {
+  void (^x)(int);
+}
+void invalid3() {
+  void (^x)(int);
+}
+void invalid4() {
+  void (^x)(int);
+}
+void valid() {
+  void (^x1)(int);
+  int (^x2)(int);
+  void (^x3)(int, int);
+  void (^x4)(short);
+}
+#elif defined(SECOND)
+void invalid1() {
+  void (^x)();
+}
+void invalid2() {
+  void (^x)(int, int);
+}
+void invalid3() {
+  int (^x)(int);
+}
+void invalid4() {
+  void (^x)(float);
+}
+void valid() {
+  void (^x1)(int);
+  int (^x2)(int);
+  void (^x3)(int, int);
+  void (^x4)(short);
+}
+#else
+auto function1 = invalid1;
+// expected-error@second.h:* {{'Types::BlockPointer::invalid1' has different definitions in different modules; definition in module 'SecondModule' first difference is function body}}
+// expected-note@first.h:* {{but in 'FirstModule' found a different body}}
+auto function2 = invalid2;
+// expected-error@second.h:* {{'Types::BlockPointer::invalid2' has different definitions in different modules; definition in module 'SecondModule' first difference is function body}}
+// expected-note@first.h:* {{but in 'FirstModule' found a different body}}
+auto function3 = invalid3;
+// expected-error@second.h:* {{'Types::BlockPointer::invalid3' has different definitions in different modules; definition in module 'SecondModule' first difference is function body}}
+// expected-note@first.h:* {{but in 'FirstModule' found a different body}}
+auto function4 = invalid4;
+// expected-error@second.h:* {{'Types::BlockPointer::invalid4' has different definitions in different modules; definition in module 'SecondModule' first difference is function body}}
+// expected-note@first.h:* {{but in 'FirstModule' found a different body}}
+auto function5 = valid;
+#endif
+}  // namespace BlockPointer
+
+namespace ObjCObject {
+#if defined(FIRST)
+struct Invalid1 {
+  using T = Interface2<I1*>;
+};
+struct Invalid2 {
+  using T = Interface2<I1*>;
+};
+struct Invalid3 {
+  using T = Interface2<P1, P1>;
+};
+struct Invalid4 {
+  using T = Interface2<P1>;
+};
+struct Valid {
+  using T1 = Interface2<I1*>;
+  using T2 = Interface3<I1*>;
+  using T3 = Interface2<P1>;
+  using T4 = Interface3<P1, P2>;
+  using T5 = __kindof Interface2;
+};
+#elif defined(SECOND)
+struct Invalid1 {
+  using T = Interface3<I1*>;
+};
+struct Invalid2 {
+  using T = Interface2<I2*>;
+};
+struct Invalid3 {
+  using T = Interface2<P1>;
+};
+struct Invalid4 {
+  using T = Interface2<P2>;
+};
+struct Valid {
+  using T1 = Interface2<I1*>;
+  using T2 = Interface3<I1*>;
+  using T3 = Interface2<P1>;
+  using T4 = Interface3<P1, P2>;
+  using T5 = __kindof Interface2;
+};
+#else
+Invalid1 i1;
+// expected-error@first.h:* {{'Types::ObjCObject::Invalid1::T' from module 'FirstModule' is not present in definition of 'Types::ObjCObject::Invalid1' in module 'SecondModule'}}
+// expected-note@second.h:* {{declaration of 'T' does not match}}
+Invalid2 i2;
+// expected-error@first.h:* {{'Types::ObjCObject::Invalid2::T' from module 'FirstModule' is not present in definition of 'Types::ObjCObject::Invalid2' in module 'SecondModule'}}
+// expected-note@second.h:* {{declaration of 'T' does not match}}
+Invalid3 i3;
+// expected-error@second.h:* {{'Types::ObjCObject::Invalid3' has different definitions in different modules; first difference is definition in module 'SecondModule' found type alias 'T' with underlying type 'Interface2<P1>'}}
+// expected-note@first.h:* {{but in 'FirstModule' found type alias 'T' with different underlying type 'Interface2<P1,P1>'}}
+Invalid4 i4;
+// expected-error@first.h:* {{'Types::ObjCObject::Invalid4::T' from module 'FirstModule' is not present in definition of 'Types::ObjCObject::Invalid4' in module 'SecondModule'}}
+// expected-note@second.h:* {{declaration of 'T' does not match}}
+Valid v;
+#endif
+}  // namespace VisitObjCObject
+}  // namespace Types
+
+#if defined(FIRST)
+@interface Interface4 <T : I1 *> {
+@public
+  T<P1> x;
+}
+@end
+@interface Interface5 <T : I1 *> {
+@public
+  T<P1> x;
+}
+@end
+@interface Interface6 <T1 : I1 *, T2 : I2 *> {
+@public
+  T1 x;
+}
+@end
+#elif defined(SECOND)
+@interface Interface4 <T : I1 *> {
+@public
+  T<P2> x;
+}
+@end
+@interface Interface5 <T : I1 *> {
+@public
+  T<P1, P2> x;
+}
+@end
+@interface Interface6 <T1 : I1 *, T2 : I2 *> {
+@public
+  T2 x;
+}
+@end
+#endif
+
+namespace Types {
+namespace ObjCTypeParam {
+#if defined(FIRST) || defined(SECOND)
+struct Invalid1 {
+  Interface4 *I;
+  decltype(I->x) x;
+};
+struct Invalid2 {
+  Interface5 *I;
+  decltype(I->x) x;
+};
+struct Invalid3 {
+  Interface6 *I;
+  decltype(I->x) x;
+};
+#else
+Invalid1 i1;
+// expected-error@first.h:* {{'Types::ObjCTypeParam::Invalid1::x' from module 'FirstModule' is not present in definition of 'Types::ObjCTypeParam::Invalid1' in module 'SecondModule'}}
+// expected-note@second.h:* {{declaration of 'x' does not match}}
+Invalid2 i2;
+// expected-error@first.h:* {{'Types::ObjCTypeParam::Invalid2::x' from module 'FirstModule' is not present in definition of 'Types::ObjCTypeParam::Invalid2' in module 'SecondModule'}}
+// expected-note@second.h:* {{declaration of 'x' does not match}}
+Invalid3 i3;
+// expected-error@first.h:* {{'Types::ObjCTypeParam::Invalid3::x' from module 'FirstModule' is not present in definition of 'Types::ObjCTypeParam::Invalid3' in module 'SecondModule'}}
+// expected-note@second.h:* {{declaration of 'x' does not match}}
+#endif
+
+}  // namespace ObjCTypeParam
+}  // namespace Types
+
+namespace CallMethods {
+#if defined(FIRST)
+void invalid1(EmptySelectorSlot *obj) {
+  [obj method:0];
+}
+void invalid2(EmptySelectorSlot *obj) {
+  [obj multiple:0 args:0 :0];
+}
+#elif defined(SECOND)
+void invalid1(EmptySelectorSlot *obj) {
+  [obj method:0 :0];
+}
+void invalid2(EmptySelectorSlot *obj) {
+  [obj multiple:0 :0 args:0];
+}
+#endif
+// expected-error@second.h:* {{'CallMethods::invalid1' has different definitions in different modules; definition in module 'SecondModule' first difference is function body}}
+// expected-note@first.h:* {{but in 'FirstModule' found a different body}}
+
+// expected-error@second.h:* {{'CallMethods::invalid2' has different definitions in different modules; definition in module 'SecondModule' first difference is function body}}
+// expected-note@first.h:* {{but in 'FirstModule' found a different body}}
+}  // namespace CallMethods
+
+// Keep macros contained to one file.
+#ifdef FIRST
+#undef FIRST
+#endif
+
+#ifdef SECOND
+#undef SECOND
+#endif