diff --git a/gcc/testsuite/obj-c++.dg/cxx-ivars-3.mm b/gcc/testsuite/obj-c++.dg/cxx-ivars-3.mm
index e94e6ec..0098349 100644
--- a/gcc/testsuite/obj-c++.dg/cxx-ivars-3.mm
+++ b/gcc/testsuite/obj-c++.dg/cxx-ivars-3.mm
@@ -2,12 +2,15 @@
 
 // { dg-do run { target *-*-darwin* } }
 // { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } }
-// { dg-options "-fobjc-call-cxx-cdtors -mmacosx-version-min=10.4" }
+// { dg-additional-options "-fobjc-call-cxx-cdtors -mmacosx-version-min=10.4 -framework Foundation" }
 // This test has no equivalent or meaning for m64/ABI V2
 // { dg-xfail-run-if "No Test Avail" { *-*-darwin* && lp64 } { "-fnext-runtime" } { "" } }
 
 #include <objc/objc-runtime.h>
 #include <stdlib.h>
+#include <Foundation/NSObject.h>
+
+//extern "C" { int printf(const char *,...); }
 #define CHECK_IF(expr) if(!(expr)) abort()
 
 #ifndef CLS_HAS_CXX_STRUCTORS
@@ -19,7 +22,7 @@ struct cxx_struct {
   cxx_struct (void) { a = b = 55; }
 };
 
-@interface Foo {
+@interface Foo: NSObject {
   int c;
   cxx_struct s;
 }
@@ -42,9 +45,11 @@ int main (void)
   Class cls;
 
   cls = objc_getClass("Foo");
-  CHECK_IF(cls->info & CLS_HAS_CXX_STRUCTORS);
+//  printf((const char *)"Foo info %lx\n",cls->info);
+  CHECK_IF((cls->info & CLS_HAS_CXX_STRUCTORS) != 0);
   cls = objc_getClass("Bar");
-  CHECK_IF(!(cls->info & CLS_HAS_CXX_STRUCTORS));
+//  printf((const char *)"Bar info %lx\n",cls->info);
+  CHECK_IF((cls->info & CLS_HAS_CXX_STRUCTORS) == 0);
 
 #else
   /* No test needed or available.  */
diff --git a/gcc/testsuite/obj-c++.dg/method-12.mm b/gcc/testsuite/obj-c++.dg/method-12.mm
index c1f2a39..6cdb0f9 100644
--- a/gcc/testsuite/obj-c++.dg/method-12.mm
+++ b/gcc/testsuite/obj-c++.dg/method-12.mm
@@ -2,6 +2,7 @@
 /* Author: Ziemowit Laski <zlaski@apple.com>  */
 /* { dg-options "-Wstrict-selector-match" } */
 /* { dg-do compile } */
+/* { dg-skip-if "Object interface removed" { *-*-darwin[1-2]* && { lp64 } } { "-fnext-runtime" } { "" } } */
 
 #include <objc/Protocol.h>
 
@@ -19,13 +20,13 @@ void foo(void) {
   Class receiver;
 
   [receiver port];  /* { dg-warning "multiple methods named .\\+port. found" } */
-       /* { dg-message "using .\\-\\(unsigned( int)?\\)port." "" { target *-*-* } 9 } */
-       /* { dg-message "also found .\\+\\(Protocol \\*\\)port." "" { target *-*-* } 14 } */
+       /* { dg-message "using .\\-\\(unsigned( int)?\\)port." "" { target *-*-* } 10 } */
+       /* { dg-message "also found .\\+\\(Protocol \\*\\)port." "" { target *-*-* } 15 } */
 
   [receiver starboard];  /* { dg-warning "no .\\+starboard. method found" } */
-       /* { dg-warning "Messages without a matching method signature" "" { target *-*-* } 25 } */
-       /* { dg-warning "will be assumed to return .id. and accept" "" { target *-*-* } 25 } */
-       /* { dg-warning ".\.\.\.. as arguments" "" { target *-*-* } 25 } */
+       /* { dg-warning "Messages without a matching method signature" "" { target *-*-* } 26 } */
+       /* { dg-warning "will be assumed to return .id. and accept" "" { target *-*-* } 26 } */
+       /* { dg-warning ".\.\.\.. as arguments" "" { target *-*-* } 26 } */
 
   [Class port];  /* { dg-error ".Class. is not an Objective\\-C class name or alias" } */
 }
diff --git a/gcc/testsuite/obj-c++.dg/proto-lossage-7.mm b/gcc/testsuite/obj-c++.dg/proto-lossage-7.mm
index b7746d7..b32cfd8 100644
--- a/gcc/testsuite/obj-c++.dg/proto-lossage-7.mm
+++ b/gcc/testsuite/obj-c++.dg/proto-lossage-7.mm
@@ -1,12 +1,19 @@
 /* Check that typedefs of ObjC classes preserve 
    any @protocol qualifiers.  */
 /* { dg-do compile } */
+
+#ifdef __NEXT_RUNTIME__
+#include <Foundation/NSObject.h>
+#define OBJECT NSObject
+#else
 #include <objc/Object.h>
+#define OBJECT Object
+#endif
 
 @protocol CanDoStuff;
 
-typedef Object<CanDoStuff> CanDoStuffType;
-typedef Object<CanDoStuff> *CanDoStuffTypePtr;
+typedef OBJECT<CanDoStuff> CanDoStuffType;
+typedef OBJECT<CanDoStuff> *CanDoStuffTypePtr;
 
 @protocol CanDoStuff
 - (int) dostuff;
diff --git a/gcc/testsuite/obj-c++.dg/strings/const-cfstring-5.mm b/gcc/testsuite/obj-c++.dg/strings/const-cfstring-5.mm
index 13cb789..98bb7c5 100644
--- a/gcc/testsuite/obj-c++.dg/strings/const-cfstring-5.mm
+++ b/gcc/testsuite/obj-c++.dg/strings/const-cfstring-5.mm
@@ -6,16 +6,16 @@
 /* { dg-skip-if "NeXT only" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-mconstant-cfstrings" } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 
-@interface Foo: Object {
+@interface Foo: NSObject {
   char *cString;
   unsigned int len;
 }
 + (Foo *)description;
 @end
 
-@interface Bar: Object
+@interface Bar: NSObject
 + (Foo *) getString: (int) which;
 @end
 
diff --git a/gcc/testsuite/obj-c++.dg/strings/const-str-12.mm b/gcc/testsuite/obj-c++.dg/strings/const-str-12.mm
index 430ab5d..d0dfb66 100644
--- a/gcc/testsuite/obj-c++.dg/strings/const-str-12.mm
+++ b/gcc/testsuite/obj-c++.dg/strings/const-str-12.mm
@@ -5,17 +5,23 @@
 /* { dg-options "-fconstant-string-class=Foo" } */
 /* { dg-options "-mno-constant-cfstrings -fconstant-string-class=Foo" { target *-*-darwin* } } */
 
+#ifdef __NEXT_RUNTIME__
+#include <Foundation/NSObject.h>
+#define OBJECT NSObject
+#else
 #include <objc/Object.h>
+#define OBJECT Object
+#endif
 #include "../../objc-obj-c++-shared/objc-test-suite-types.h"
 
-@interface Foo: Object {
+@interface Foo: OBJECT {
   char *cString;
   unsigned int len;
 }
 + (id)description;
 @end
 
-@interface Bar: Object
+@interface Bar: OBJECT
 + (Foo *) getString: (int) which;
 @end
 
diff --git a/gcc/testsuite/obj-c++.dg/syntax-error-1.mm b/gcc/testsuite/obj-c++.dg/syntax-error-1.mm
index 13f3c27..1fe9ca3 100644
--- a/gcc/testsuite/obj-c++.dg/syntax-error-1.mm
+++ b/gcc/testsuite/obj-c++.dg/syntax-error-1.mm
@@ -1,7 +1,13 @@
 /* Graceful handling of a syntax error.  */
 /* { dg-do compile } */
 
+#ifdef __NEXT_RUNTIME__
+#include <Foundation/NSObject.h>
+#define OBJECT NSObject
+#else
 #include <objc/Object.h>
+#define OBJECT Object
+#endif
 
 class foo {
   public:
@@ -12,7 +18,7 @@ class foo {
 
 extern void NXLog(const char *, ...);
 
-@interface Test2 : Object {
+@interface Test2 : OBJECT {
 }
 - (void) foo2;
 @end
@@ -23,4 +29,4 @@ extern void NXLog(const char *, ...);
 } /* { dg-error "stray .\}. between Objective\\-C\\+\\+ methods" } */
 @end
 
-/* { dg-error "expected constructor, destructor, or type conversion before" "" { target *-*-* } 22 } */
+/* { dg-error "expected constructor, destructor, or type conversion before" "" { target *-*-* } 28 } */
diff --git a/gcc/testsuite/obj-c++.dg/torture/strings/const-str-10.mm b/gcc/testsuite/obj-c++.dg/torture/strings/const-str-10.mm
index cba188b..f2e912b 100644
--- a/gcc/testsuite/obj-c++.dg/torture/strings/const-str-10.mm
+++ b/gcc/testsuite/obj-c++.dg/torture/strings/const-str-10.mm
@@ -6,10 +6,10 @@
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-mno-constant-cfstrings" { target *-*-darwin* } } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 #include "../../../objc-obj-c++-shared/runtime.h" /* For NEXT_OBJC_USE_NEW_INTERFACE.  */
 
-@interface NSString: Object
+@interface NSString: NSObject
 @end
 
 @interface NSSimpleCString : NSString {
diff --git a/gcc/testsuite/obj-c++.dg/torture/strings/const-str-11.mm b/gcc/testsuite/obj-c++.dg/torture/strings/const-str-11.mm
index c54f89b..7e5d9b6 100644
--- a/gcc/testsuite/obj-c++.dg/torture/strings/const-str-11.mm
+++ b/gcc/testsuite/obj-c++.dg/torture/strings/const-str-11.mm
@@ -7,10 +7,10 @@
 /* { dg-options "-fconstant-string-class=XStr" } */
 /* { dg-options "-mno-constant-cfstrings -fconstant-string-class=XStr" { target *-*-darwin* } } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 #include "../../../objc-obj-c++-shared/runtime.h" /* For NEXT_OBJC_USE_NEW_INTERFACE.  */
 
-@interface XString: Object {
+@interface XString: NSObject {
 @protected
     char *bytes;
 }
diff --git a/gcc/testsuite/obj-c++.dg/torture/strings/const-str-9.mm b/gcc/testsuite/obj-c++.dg/torture/strings/const-str-9.mm
index b4f15fd..d78dc73 100644
--- a/gcc/testsuite/obj-c++.dg/torture/strings/const-str-9.mm
+++ b/gcc/testsuite/obj-c++.dg/torture/strings/const-str-9.mm
@@ -5,10 +5,10 @@
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-mno-constant-cfstrings" { target *-*-darwin* } } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 #include "../../../objc-obj-c++-shared/runtime.h" /* For NEXT_OBJC_USE_NEW_INTERFACE.  */
 
-@interface NSConstantString: Object {
+@interface NSConstantString: NSObject {
   char *cString;
   unsigned int len;
 }
diff --git a/gcc/testsuite/objc.dg/encode-7-next-64bit.m b/gcc/testsuite/objc.dg/encode-7-next-64bit.m
index 20cd400..4a418fc 100644
--- a/gcc/testsuite/objc.dg/encode-7-next-64bit.m
+++ b/gcc/testsuite/objc.dg/encode-7-next-64bit.m
@@ -4,24 +4,25 @@
 /* { dg-require-effective-target lp64 } */
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+/* { dg-additional-options "-framework Foundation" } */
 
 #include <stdbool.h>
 #include <string.h>
 #include <stdlib.h>
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 #include "../objc-obj-c++-shared/runtime.h"
 
-#define CHECK_IF(E) if (!(E)) abort ()
+extern int printf(char *,...);
+void CHECK_IF(const char *s1, const char *s2)
+{
+ if (strcmp(s1,s2) != 0) {
+ printf ("'%s'\n'%s'\n",s1,s2);
+ abort ();
+ }
+}
 
 @class NSDictionary, NSFont, NSError, _NSATSTypesetterGuts, NSString, NSMenu, NSArray;
 
-typedef unsigned char UInt8;
-typedef const signed long OSStatus;
-typedef unsigned long CFIndex;
-typedef unsigned int UInt32;
-typedef UInt32 FourCharCode;
-typedef FourCharCode OSType;
-
 struct FSRef {
   UInt8 hidden[80];
 };
@@ -99,10 +100,10 @@ typedef struct {
   unsigned int parameterMask;
 } NSErrorUserInfoFormatter;
 
-typedef Object MyObj;
-typedef Object *MyPtr;
+typedef NSObject MyObj;
+typedef NSObject *MyPtr;
 
-@interface Foo: Object {
+@interface Foo: NSObject {
   NSATSGlyphStorageRun r;
 }
 - (NSError *)_errorWithOSStatus:(OSStatus)inOSStatus ref1:(const FSRef *)inRef1 ref2:(const struct FSRef *)inRef2
@@ -114,7 +115,7 @@ typedef Object *MyPtr;
 - (id)str1:(const char *)str1 str2:(char *)str2 str3:(char *const)str3 str4:(const char *const)str4;
 - (oneway void)foo1:(Foo *)foo1 foo2:(const Foo *)foo2 foo3:(Foo *const)foo3 foo4:(const Foo *const)foo4;
 - (in const char *)sel1:(const SEL)sel1 id1:(const id)id1;
-- (inout id)obj1:(const MyPtr)obj1 obj2:(Object *const)obj2 obj3:(MyObj *const)obj3;
+- (inout id)obj1:(const MyPtr)obj1 obj2:(NSObject *const)obj2 obj3:(MyObj *const)obj3;
 + (ComponentInstance)_defaultScriptingComponent;
 - (NSString *)_formatCocoaErrorString:(NSString *)formatString parameters:(const char *)parameters 
   applicableFormatters:(NSErrorUserInfoFormatter **)formatters count:(int)numFormatters;
@@ -156,7 +157,7 @@ NSRange globalRange;
 - (in const char *)sel1:(const SEL)sel1 id1:(const id)id1 {
   return "Hello";
 }  
-- (inout id)obj1:(const MyPtr)obj1 obj2:(Object *const)obj2 obj3:(MyObj *const)obj3 {
+- (inout id)obj1:(const MyPtr)obj1 obj2:(NSObject *const)obj2 obj3:(MyObj *const)obj3 {
   return self;
 }
 + (ComponentInstance)_defaultScriptingComponent {
@@ -191,6 +192,8 @@ NSRange globalRange;
 }
 @end
 
+/* FIXME: we produce different output c.f. the system compiler on OSX10.6+ */
+
 int main(void) {
   Class fooClass = objc_getClass ("Foo");
   Method meth;
@@ -199,72 +202,76 @@ int main(void) {
   Ivar ivar;
 
   meth = class_getInstanceMethod (fooClass, @selector(_errorWithOSStatus:ref1:ref2:reading:));
-  CHECK_IF (!strcmp (method_getTypeEncoding(meth), "@44@0:8q16r^{FSRef=[80C]}24r^{FSRef=[80C]}32c40"));
+  CHECK_IF (method_getTypeEncoding(meth), "@40@0:8i16r^{FSRef=[80C]}20r^{FSRef=[80C]}28c36");
 
   meth = class_getInstanceMethod (fooClass, @selector(_attributeRunForCharacterAtIndex:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "r^{?=@@QQ^Qffff{_NSRect={_NSPoint=ff}{_NSSize=ff}}q^qQ^Q@@@:::****{?=b1b1b1b1b1b27}}24@0:8Q16"));
+  CHECK_IF (method_getTypeEncoding (meth), "r^{?=@@qq^qffff{_NSRect={_NSPoint=ff}{_NSSize=ff}}q^qQ^Q@@@:::****{?=b1b1b1b1b1b27}}24@0:8q16");
+/* clang produces: r^{?=@@qq^qffff{_NSRect={_NSPoint=ff}{_NSSize=ff}}q^qQ^Q@@@::^{objc_selector}****{?=b1b1b1b1b1b27}}24@0:8q16 */
 
   meth = class_getInstanceMethod (fooClass, @selector(_getATSTypesetterGuts:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "r@24@0:8r:16"));
+  CHECK_IF (method_getTypeEncoding (meth), "r@24@0:8r:16");
+/* "@24@0:8r^{objc_selector=}16" */
 
   meth = class_getInstanceMethod (fooClass, @selector(resumeWithSuspensionID:and:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "v32@0:8^{__NSAppleEventManagerSuspension=}16r^Q24"));
+  CHECK_IF (method_getTypeEncoding (meth), "v32@0:8^{__NSAppleEventManagerSuspension=}16r^q24");
 
   meth = class_getInstanceMethod (fooClass, @selector(anotherMeth:and:and:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "r@40@0:8r:16r@24r@32"));
+  CHECK_IF (method_getTypeEncoding (meth), "r@40@0:8r:16r@24r@32");
 
   meth = class_getInstanceMethod (fooClass, @selector(str1:str2:str3:str4:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "@48@0:8r*16*24*32r*40"));
+  CHECK_IF (method_getTypeEncoding (meth), "@48@0:8r*16*24*32r*40");
 
   meth = class_getInstanceMethod (fooClass, @selector(foo1:foo2:foo3:foo4:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "Vv48@0:8@16r@24@32r@40"));
+  CHECK_IF (method_getTypeEncoding (meth), "Vv48@0:8@16r@24@32r@40");
 
   meth = class_getInstanceMethod (fooClass, @selector(sel1:id1:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "rn*32@0:8r:16r@24"));
+  CHECK_IF (method_getTypeEncoding (meth), "rn*32@0:8r:16r@24");
 
   meth = class_getInstanceMethod (fooClass, @selector(obj1:obj2:obj3:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "N@40@0:8r@16@24^{Object=#}32"));
+  CHECK_IF (method_getTypeEncoding (meth), "N@40@0:8r@16@24^{NSObject=#}32");
 
   meth = class_getClassMethod (fooClass, @selector(_defaultScriptingComponent));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "^{ComponentInstanceRecord=[1q]}16@0:8"));
+  CHECK_IF (method_getTypeEncoding (meth), "^{ComponentInstanceRecord=[1q]}16@0:8");
 
   meth = class_getInstanceMethod (fooClass, @selector(_formatCocoaErrorString:parameters:applicableFormatters:count:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "@44@0:8@16r*24^^{?}32i40"));
+  CHECK_IF (method_getTypeEncoding (meth), "@44@0:8@16r*24^^{?}32i40");
 
   meth = class_getInstanceMethod (fooClass, @selector(formatter_func:run:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "^{?=^?@I}32@0:8@16r^^{?}24"));
+  CHECK_IF (method_getTypeEncoding (meth), "^{?=^?@I}32@0:8@16r^^{?}24");
 
   meth = class_getInstanceMethod (fooClass, @selector(_forgetWord:inDictionary:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "c32@0:8nO@16nO@24"));
+  CHECK_IF (method_getTypeEncoding (meth), "c32@0:8nO@16nO@24");
 
   meth = class_getInstanceMethod (fooClass, @selector(_registerServicesMenu:withSendTypes:andReturnTypes:addToList:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "v44@0:8@16r^*24r^*32c40"));
+  CHECK_IF (method_getTypeEncoding (meth), "v44@0:8@16r^*24r^*32c40");
 
   meth = class_getClassMethod (fooClass, @selector(_proxySharePointer));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "^^{__CFSet}16@0:8"));
+  CHECK_IF (method_getTypeEncoding (meth), "^^{__CFSet}16@0:8");
 
   meth = class_getInstanceMethod (fooClass, @selector(_checkGrammarInString:language:details:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "{_NSRange=II}40@0:8n@16nO@24oO^@32"));
+  CHECK_IF (method_getTypeEncoding (meth), "{_NSRange=II}40@0:8n@16nO@24oO^@32");
 
   meth = class_getInstanceMethod (fooClass, @selector(_resolvePositionalStakeGlyphsForLineFragment:lineFragmentRect:minPosition:maxPosition:maxLineFragmentWidth:breakHint:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "B60@0:8^{__CTLine=}16{_NSRect={_NSPoint=ff}{_NSSize=ff}}24f40f44f48^Q52"));
+  CHECK_IF (method_getTypeEncoding (meth), "B60@0:8^{__CTLine=}16{_NSRect={_NSPoint=ff}{_NSSize=ff}}24f40f44f48^q52");
 
   meth = class_getClassMethod (fooClass, @selector(findVoiceByIdentifier:returningCreator:returningID:));
-  CHECK_IF (!strcmp (method_getTypeEncoding (meth), "c40@0:8@16^I24^I32"));
+  CHECK_IF (method_getTypeEncoding (meth), "c40@0:8@16^I24^I32");
 
   ivars = class_copyIvarList (fooClass, &ivar_count);
-  CHECK_IF (ivar_count == 1);
+  if (ivar_count != 1) {
+    abort ();
+  }
 
   ivar = ivars[0];
-  CHECK_IF (!strcmp (ivar_getName(ivar), "r"));
-  CHECK_IF (!strcmp (ivar_getTypeEncoding(ivar),
+  CHECK_IF (ivar_getName(ivar), "r");
+  CHECK_IF (ivar_getTypeEncoding(ivar),
    "{?=\"_attributes\"@\"NSDictionary\"\"_font\"@\"NSFont\"\"_characterLength\""
-    "Q\"_nominalGlyphLocation\"Q\"p\"^Q\"_defaultLineHeight\"f\"_defaultBaselineOffset\""
+    "q\"_nominalGlyphLocation\"q\"p\"^q\"_defaultLineHeight\"f\"_defaultBaselineOffset\""
     "f\"_horizExpansion\"f\"_baselineDelta\"f\"_attachmentBBox\"{_NSRect=\"origin\""
     "{_NSPoint=\"x\"f\"y\"f}\"size\"{_NSSize=\"width\"f\"height\"f}}\"ll\"q\"llp\"^q\"ull\""
     "Q\"ullp\"^Q\"a\"@\"a1\"@\"a2\"@\"b\":\"b1\":\"b2\":\"str1\"*\"str2\"*\"str3\"*\"str4\""
     "*\"_rFlags\"{?=\"_isAttachmentRun\"b1\"_hasPositionalStake\"b1\"_isDefaultFace\""
-    "b1\"_hasCombiningMarks\"b1\"_isScreenFont\"b1\"_reserved\"b27}}"));
-
+    "b1\"_hasCombiningMarks\"b1\"_isScreenFont\"b1\"_reserved\"b27}}");
+/*"{?=\"_attributes\"@\"NSDictionary\"\"_font\"@\"NSFont\"\"_characterLength\"q\"_nominalGlyphLocation\"q\"p\"^q\"_defaultLineHeight\"f\"_defaultBaselineOffset\"f\"_horizExpansion\"f\"_baselineDelta\"f\"_attachmentBBox\"{_NSRect=\"origin\"{_NSPoint=\"x\"f\"y\"f}\"size\"{_NSSize=\"width\"f\"height\"f}}\"ll\"q\"llp\"^q\"ull\"Q\"ullp\"^Q\"a\"@\"a1\"@\"a2\"@\"b\":\"b1\":\"b2\"^{objc_selector}\"str1\"*\"str2\"*\"str3\"*\"str4\"*\"_rFlags\"{?=\"_isAttachmentRun\"b1\"_hasPositionalStake\"b1\"_isDefaultFace\"b1\"_hasCombiningMarks\"b1\"_isScreenFont\"b1\"_reserved\"b27}}"*/
   return 0;
 }
diff --git a/gcc/testsuite/objc.dg/image-info.m b/gcc/testsuite/objc.dg/image-info.m
index 194d366..0932913 100644
--- a/gcc/testsuite/objc.dg/image-info.m
+++ b/gcc/testsuite/objc.dg/image-info.m
@@ -7,20 +7,19 @@
 /* { dg-skip-if "NeXT-only" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-freplace-objc-classes" } */
 
-#include <objc/objc.h>
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 
 extern void abort(void);
 #define CHECK_IF(expr) if(!(expr)) abort();
 
-@interface Object (TEST_SUITE_C1)
+@interface NSObject (TEST_SUITE_C1)
 - init;
 @end
-@implementation Object (TEST_SUITE_C1)
+@implementation NSObject (TEST_SUITE_C1)
 - init {return self;}
 @end
 
-@interface Base: Object {
+@interface Base: NSObject {
 @public
   int a;
   float b;
diff --git a/gcc/testsuite/objc.dg/method-6.m b/gcc/testsuite/objc.dg/method-6.m
index 8d868d1..a14c14d 100644
--- a/gcc/testsuite/objc.dg/method-6.m
+++ b/gcc/testsuite/objc.dg/method-6.m
@@ -4,14 +4,21 @@
 /* { dg-do compile } */
 /* { dg-options "-Wstrict-selector-match" } */
 
+#ifdef __NEXT_RUNTIME__
+#include <Foundation/NSObject.h>
+#define OBJECT NSObject
+#else
+#include <objc/Object.h>
 #include <objc/Protocol.h>
+#define OBJECT Object
+#endif
 
 @interface Base
 - (unsigned)port;
 @end
 
 @interface Derived: Base
-- (Object *)port;
+- (OBJECT *)port;
 + (Protocol *)port;
 - (id)starboard;
 @end
@@ -20,13 +27,13 @@ void foo(void) {
   Class receiver;
 
   [receiver port];  /* { dg-warning "multiple methods named .\\+port. found" } */
-       /* { dg-message "using .\\-\\(unsigned( int)?\\)port." "" { target *-*-* } 10 } */
-       /* { dg-message "also found .\\+\\(Protocol \\*\\)port." "" { target *-*-* } 15 } */
+       /* { dg-message "using .\\-\\(unsigned( int)?\\)port." "" { target *-*-* } 17 } */
+       /* { dg-message "also found .\\+\\(Protocol \\*\\)port." "" { target *-*-* } 22 } */
 
   [receiver starboard];  /* { dg-warning "no .\\+starboard. method found" } */
-       /* { dg-warning "Messages without a matching method signature" "" { target *-*-* } 26 } */
-       /* { dg-warning "will be assumed to return .id. and accept" "" { target *-*-* } 26 } */
-       /* { dg-warning ".\.\.\.. as arguments" "" { target *-*-* } 26 } */
+       /* { dg-warning "Messages without a matching method signature" "" { target *-*-* } 33 } */
+       /* { dg-warning "will be assumed to return .id. and accept" "" { target *-*-* } 33 } */
+       /* { dg-warning ".\.\.\.. as arguments" "" { target *-*-* } 33 } */
 
   [Class port];  /* { dg-error ".Class. is not an Objective\\-C class name or alias" } */
 }
diff --git a/gcc/testsuite/objc.dg/no-extra-load.m b/gcc/testsuite/objc.dg/no-extra-load.m
index 7503535..f5e1d74 100644
--- a/gcc/testsuite/objc.dg/no-extra-load.m
+++ b/gcc/testsuite/objc.dg/no-extra-load.m
@@ -1,7 +1,7 @@
 /* { dg-do compile { target *-*-darwin* } } */
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 
-#import <Foundation/Foundation.h>
+#include <Foundation/NSObject.h>
 main() { [NSObject new]; }
 
 /* { dg-final { scan-assembler-not "L_objc_msgSend\\\$non_lazy_ptr" } } */
diff --git a/gcc/testsuite/objc.dg/objc-foreach-4.m b/gcc/testsuite/objc.dg/objc-foreach-4.m
index 292a908..4d902f5 100644
--- a/gcc/testsuite/objc.dg/objc-foreach-4.m
+++ b/gcc/testsuite/objc.dg/objc-foreach-4.m
@@ -1,17 +1,13 @@
 /* Test for valid objc objects used in a for-each statement. */
 /* FIXME: Run this test with the GNU runtime as well.  */
-/* { dg-do compile { target *-*-darwin* } } */
+/* { dg-do run { target *-*-darwin* } } */
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-skip-if "No NeXT fast enum. pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
+/* { dg-additional-options "-framework Foundation" { target { *-*-darwin* } } } */
 
-#include <objc/objc-api.h>
-#include <Foundation/Foundation.h>
-
-#if defined (__NEXT_RUNTIME__) && defined (__LP64__)
-/* Fudge the class reference until we implement the compiler-side 
-   const strings.  */
-extern void *_NSConstantStringClassReference;
-#endif
+#include <Foundation/NSString.h>
+#include <Foundation/NSAutoreleasePool.h>
+#include <Foundation/NSArray.h>
 
 // gcc -o foo foo.m -framework Foundation
 
diff --git a/gcc/testsuite/objc.dg/objc-foreach-5.m b/gcc/testsuite/objc.dg/objc-foreach-5.m
index cb15781..7113a7a 100644
--- a/gcc/testsuite/objc.dg/objc-foreach-5.m
+++ b/gcc/testsuite/objc.dg/objc-foreach-5.m
@@ -2,8 +2,10 @@
 /* { dg-do compile { target *-*-darwin* } } */
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-skip-if "No NeXT fast enum. pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
+/* { dg-additional-options "-framework Foundation" { target { *-*-darwin* } } } */
 
-#import <Foundation/Foundation.h>
+#include <Foundation/NSArray.h>
+#include <Foundation/NSAutoreleasePool.h>
 
 NSArray * createTestVictim(unsigned capacity) {
     NSMutableArray * arr = [[NSMutableArray alloc] initWithCapacity:capacity];
diff --git a/gcc/testsuite/objc.dg/pr23214.m b/gcc/testsuite/objc.dg/pr23214.m
index cf2631c..341a283 100644
--- a/gcc/testsuite/objc.dg/pr23214.m
+++ b/gcc/testsuite/objc.dg/pr23214.m
@@ -3,14 +3,24 @@
 
 /* { dg-do run } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+/* { dg-additional-options "-framework Foundation" { target { { *-*-darwin* } && objc2 } } } */
 
+#if defined (__NEXT_RUNTIME__) && defined(__OBJC2__) \
+    && defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) \
+    && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1070
 #include <objc/Protocol.h>
- 
-@interface Object (TS_CAT)
+#define OBJECT NSObject
+#else
+#include <objc/Object.h>
+#define OBJECT Object
+#include <objc/Protocol.h>
+#endif
+
+@interface OBJECT (TS_CAT)
 - test;
 @end
 
-@implementation Object (TS_CAT)
+@implementation OBJECT (TS_CAT)
 - test { return self; }
 @end
 
@@ -20,7 +30,7 @@
 @protocol B 
 @end
 
-@interface Dummy : Object <B>
+@interface Dummy : OBJECT <B>
 @end
 
 int main ()
diff --git a/gcc/testsuite/objc.dg/proto-lossage-7.m b/gcc/testsuite/objc.dg/proto-lossage-7.m
index b7746d7..b32cfd8 100644
--- a/gcc/testsuite/objc.dg/proto-lossage-7.m
+++ b/gcc/testsuite/objc.dg/proto-lossage-7.m
@@ -1,12 +1,19 @@
 /* Check that typedefs of ObjC classes preserve 
    any @protocol qualifiers.  */
 /* { dg-do compile } */
+
+#ifdef __NEXT_RUNTIME__
+#include <Foundation/NSObject.h>
+#define OBJECT NSObject
+#else
 #include <objc/Object.h>
+#define OBJECT Object
+#endif
 
 @protocol CanDoStuff;
 
-typedef Object<CanDoStuff> CanDoStuffType;
-typedef Object<CanDoStuff> *CanDoStuffTypePtr;
+typedef OBJECT<CanDoStuff> CanDoStuffType;
+typedef OBJECT<CanDoStuff> *CanDoStuffTypePtr;
 
 @protocol CanDoStuff
 - (int) dostuff;
diff --git a/gcc/testsuite/objc.dg/strings/const-cfstring-5.m b/gcc/testsuite/objc.dg/strings/const-cfstring-5.m
index 13cb789..98bb7c5 100644
--- a/gcc/testsuite/objc.dg/strings/const-cfstring-5.m
+++ b/gcc/testsuite/objc.dg/strings/const-cfstring-5.m
@@ -6,16 +6,16 @@
 /* { dg-skip-if "NeXT only" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-mconstant-cfstrings" } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 
-@interface Foo: Object {
+@interface Foo: NSObject {
   char *cString;
   unsigned int len;
 }
 + (Foo *)description;
 @end
 
-@interface Bar: Object
+@interface Bar: NSObject
 + (Foo *) getString: (int) which;
 @end
 
diff --git a/gcc/testsuite/objc.dg/strings/const-str-12b.m b/gcc/testsuite/objc.dg/strings/const-str-12b.m
index 430ab5d..d0dfb66 100644
--- a/gcc/testsuite/objc.dg/strings/const-str-12b.m
+++ b/gcc/testsuite/objc.dg/strings/const-str-12b.m
@@ -5,17 +5,23 @@
 /* { dg-options "-fconstant-string-class=Foo" } */
 /* { dg-options "-mno-constant-cfstrings -fconstant-string-class=Foo" { target *-*-darwin* } } */
 
+#ifdef __NEXT_RUNTIME__
+#include <Foundation/NSObject.h>
+#define OBJECT NSObject
+#else
 #include <objc/Object.h>
+#define OBJECT Object
+#endif
 #include "../../objc-obj-c++-shared/objc-test-suite-types.h"
 
-@interface Foo: Object {
+@interface Foo: OBJECT {
   char *cString;
   unsigned int len;
 }
 + (id)description;
 @end
 
-@interface Bar: Object
+@interface Bar: OBJECT
 + (Foo *) getString: (int) which;
 @end
 
diff --git a/gcc/testsuite/objc.dg/symtab-1.m b/gcc/testsuite/objc.dg/symtab-1.m
index 936f8d4..04d747d 100644
--- a/gcc/testsuite/objc.dg/symtab-1.m
+++ b/gcc/testsuite/objc.dg/symtab-1.m
@@ -4,9 +4,9 @@
 /* { dg-do compile { target { *-*-darwin* } } } */
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 
-@interface Base: Object 
+@interface Base: NSObject 
 - (void)setValues;
 @end
 
diff --git a/gcc/testsuite/objc.dg/torture/strings/const-str-10.m b/gcc/testsuite/objc.dg/torture/strings/const-str-10.m
index e35b83b..120bcd9 100644
--- a/gcc/testsuite/objc.dg/torture/strings/const-str-10.m
+++ b/gcc/testsuite/objc.dg/torture/strings/const-str-10.m
@@ -6,10 +6,10 @@
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-mno-constant-cfstrings" { target *-*-darwin* } } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 #include "../../../objc-obj-c++-shared/runtime.h" /* For NEXT_OBJC_USE_NEW_INTERFACE.  */
 
-@interface NSString: Object
+@interface NSString: NSObject
 @end
 
 @interface NSSimpleCString : NSString {
diff --git a/gcc/testsuite/objc.dg/torture/strings/const-str-11.m b/gcc/testsuite/objc.dg/torture/strings/const-str-11.m
index 765f648..4c3f9ea 100644
--- a/gcc/testsuite/objc.dg/torture/strings/const-str-11.m
+++ b/gcc/testsuite/objc.dg/torture/strings/const-str-11.m
@@ -7,10 +7,10 @@
 /* { dg-options "-fconstant-string-class=XStr" } */
 /* { dg-options "-mno-constant-cfstrings -fconstant-string-class=XStr" { target *-*-darwin* } } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 #include "../../../objc-obj-c++-shared/runtime.h" /* For NEXT_OBJC_USE_NEW_INTERFACE.  */
 
-@interface XString: Object {
+@interface XString: NSObject {
 @protected
     char *bytes;
 }
diff --git a/gcc/testsuite/objc.dg/torture/strings/const-str-9.m b/gcc/testsuite/objc.dg/torture/strings/const-str-9.m
index e69fb01..d65aa01 100644
--- a/gcc/testsuite/objc.dg/torture/strings/const-str-9.m
+++ b/gcc/testsuite/objc.dg/torture/strings/const-str-9.m
@@ -5,10 +5,10 @@
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-mno-constant-cfstrings" { target *-*-darwin* } } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 #include "../../../objc-obj-c++-shared/runtime.h" /* For NEXT_OBJC_USE_NEW_INTERFACE.  */
 
-@interface NSConstantString: Object {
+@interface NSConstantString: NSObject {
   char *cString;
   unsigned int len;
 }
diff --git a/gcc/testsuite/objc.dg/zero-link-1.m b/gcc/testsuite/objc.dg/zero-link-1.m
index 4917495..812267b 100644
--- a/gcc/testsuite/objc.dg/zero-link-1.m
+++ b/gcc/testsuite/objc.dg/zero-link-1.m
@@ -5,13 +5,12 @@
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-fzero-link" } */
 
-#include <objc/Object.h>
-#include <objc/objc.h>
+#include <Foundation/NSObject.h>
 
 extern void abort(void);
 #define CHECK_IF(expr) if(!(expr)) abort();
 
-@interface Base: Object
+@interface Base: NSObject
 + (int) getValue;
 @end
 
diff --git a/gcc/testsuite/objc.dg/zero-link-2.m b/gcc/testsuite/objc.dg/zero-link-2.m
index ff82e5e..3bfe84d 100644
--- a/gcc/testsuite/objc.dg/zero-link-2.m
+++ b/gcc/testsuite/objc.dg/zero-link-2.m
@@ -5,12 +5,12 @@
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-fno-zero-link" } */
 
-#include <objc/Object.h>
+#include <Foundation/NSObject.h>
 
 extern void abort(void);
 #define CHECK_IF(expr) if(!(expr)) abort();
 
-@interface Base: Object
+@interface Base: NSObject
 + (int) getValue;
 @end
 
diff --git a/gcc/testsuite/objc.dg/zero-link-3.m b/gcc/testsuite/objc.dg/zero-link-3.m
index 5da7422..18f21db 100644
--- a/gcc/testsuite/objc.dg/zero-link-3.m
+++ b/gcc/testsuite/objc.dg/zero-link-3.m
@@ -2,15 +2,23 @@
 /* Contributed by Ziemowit Laski <zlaski@apple.com>.  */
 
 /* { dg-do run { target *-*-darwin* } } */
-/* { dg-options "-fzero-link" } */
+/* { dg-additional-options "-fzero-link" } */
+/* { dg-additional-options "-framework Foundation" { target { *-*-darwin* } } } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
 
+#ifdef __NEXT_RUNTIME__
+#include <Foundation/NSObject.h>
+#define OBJECT NSObject
+#else
 #include <objc/Object.h>
+#include <objc/Protocol.h>
+#define OBJECT Object
+#endif
 
 extern void abort(void);
 #define CHECK_IF(expr) if(!(expr)) abort();
 
-@interface Base: Object
+@interface Base: OBJECT
 + (int) getValue;
 @end
 
