Objective-C [3/3] : Implement Wobjc-root-class [PR77404].

Add Wno-objc-root-class where needed to the objective-c++
tests.

gcc/testsuite/ChangeLog:

	PR objc/77404
	* obj-c++.dg/attributes/class-attribute-1.mm:
	Add Wno-objc-root-class.
	* obj-c++.dg/attributes/class-attribute-2.mm: Likewise.
	* obj-c++.dg/attributes/class-attribute-3.mm: Likewise.
	* obj-c++.dg/attributes/method-deprecated-1.mm: Likewise.
	* obj-c++.dg/attributes/method-deprecated-2.mm: Likewise.
	* obj-c++.dg/attributes/method-deprecated-3.mm: Likewise.
	* obj-c++.dg/attributes/method-format-1.mm: Likewise.
	* obj-c++.dg/attributes/method-nonnull-1.mm: Likewise.
	* obj-c++.dg/attributes/method-noreturn-1.mm: Likewise.
	* obj-c++.dg/attributes/method-sentinel-1.mm: Likewise.
	* obj-c++.dg/attributes/nsobject-01.mm: Likewise.
	* obj-c++.dg/attributes/parameter-attribute-1.mm: Likewise.
	* obj-c++.dg/attributes/parameter-attribute-2.mm: Likewise.
	* obj-c++.dg/attributes/proto-attribute-1.mm: Likewise.
	* obj-c++.dg/attributes/proto-attribute-3.mm: Likewise.
	* obj-c++.dg/attributes/proto-attribute-4.mm: Likewise.
	* obj-c++.dg/attributes/unused-parameter-1.mm: Likewise.
	* obj-c++.dg/bad-receiver-type.mm: Likewise.
	* obj-c++.dg/bitfield-3.mm: Likewise.
	* obj-c++.dg/bitfield-5.mm: Likewise.
	* obj-c++.dg/class-extension-1.mm: Likewise.
	* obj-c++.dg/class-extension-2.mm: Likewise.
	* obj-c++.dg/class-extension-3.mm: Likewise.
	* obj-c++.dg/class-extension-4.mm: Likewise.
	* obj-c++.dg/class-protocol-1.mm: Likewise.
	* obj-c++.dg/comp-types-1.mm: Likewise.
	* obj-c++.dg/comp-types-10.mm: Likewise.
	* obj-c++.dg/comp-types-2.mm: Likewise.
	* obj-c++.dg/comp-types-3.mm: Likewise.
	* obj-c++.dg/comp-types-5.mm: Likewise.
	* obj-c++.dg/comp-types-6.mm: Likewise.
	* obj-c++.dg/comp-types-7.mm: Likewise.
	* obj-c++.dg/comp-types-8.mm: Likewise.
	* obj-c++.dg/demangle-2.mm: Likewise.
	* obj-c++.dg/demangle-3.mm: Likewise.
	* obj-c++.dg/duplicate-class-1.mm: Likewise.
	* obj-c++.dg/encode-1-next.mm: Likewise.
	* obj-c++.dg/encode-1.mm: Likewise.
	* obj-c++.dg/enhanced-proto-2.mm: Likewise.
	* obj-c++.dg/exceptions-1.mm: Likewise.
	* obj-c++.dg/exceptions-3.mm: Likewise.
	* obj-c++.dg/exceptions-4.mm: Likewise.
	* obj-c++.dg/exceptions-5.mm: Likewise.
	* obj-c++.dg/extern-c-1.mm: Likewise.
	* obj-c++.dg/fobjc-std-1.mm: Likewise.
	* obj-c++.dg/gnu-api-2-class-meta.mm: Likewise.
	* obj-c++.dg/gnu-api-2-class.mm: Likewise.
	* obj-c++.dg/gnu-api-2-ivar.mm: Likewise.
	* obj-c++.dg/gnu-api-2-method.mm: Likewise.
	* obj-c++.dg/gnu-api-2-objc.mm: Likewise.
	* obj-c++.dg/gnu-api-2-objc_msg_lookup.mm: Likewise.
	* obj-c++.dg/gnu-api-2-object.mm: Likewise.
	* obj-c++.dg/gnu-api-2-property.mm: Likewise.
	* obj-c++.dg/gnu-api-2-protocol.mm: Likewise.
	* obj-c++.dg/gnu-api-2-resolve-method.mm: Likewise.
	* obj-c++.dg/gnu-api-2-sel.mm: Likewise.
	* obj-c++.dg/invalid-method-2.mm: Likewise.
	* obj-c++.dg/ivar-invalid-type-1.mm: Likewise.
	* obj-c++.dg/ivar-problem-1.mm: Likewise.
	* obj-c++.dg/lto/lto.exp: Likewise.
	* obj-c++.dg/lto/trivial-1_0.mm: Likewise.
	* obj-c++.dg/method-1.mm: Likewise.
	* obj-c++.dg/method-12.mm: Likewise.
	* obj-c++.dg/method-18.mm: Likewise.
	* obj-c++.dg/method-19.mm: Likewise.
	* obj-c++.dg/method-20.mm: Likewise.
	* obj-c++.dg/method-3.mm: Likewise.
	* obj-c++.dg/method-4.mm: Likewise.
	* obj-c++.dg/method-5.mm: Likewise.
	* obj-c++.dg/method-8.mm: Likewise.
	* obj-c++.dg/method-9.mm: Likewise.
	* obj-c++.dg/method-namespace-1.mm: Likewise.
	* obj-c++.dg/plugin/diagnostic-test-expressions-1.mm:
	Likewise.
	* obj-c++.dg/pr23709.mm: Likewise.
	* obj-c++.dg/pragma-2.mm: Likewise.
	* obj-c++.dg/private-1.mm: Likewise.
	* obj-c++.dg/private-2.mm: Likewise.
	* obj-c++.dg/property/property.exp: Likewise.
	* obj-c++.dg/proto-lossage-1.mm: Likewise.
	* obj-c++.dg/proto-lossage-5.mm: Likewise.
	* obj-c++.dg/proto-qual-1.mm: Likewise.
	* obj-c++.dg/protocol-inheritance-1.mm: Likewise.
	* obj-c++.dg/protocol-inheritance-2.mm: Likewise.
	* obj-c++.dg/protocol-optional-1.mm: Likewise.
	* obj-c++.dg/selector-1.mm: Likewise.
	* obj-c++.dg/selector-2.mm: Likewise.
	* obj-c++.dg/selector-3.mm: Likewise.
	* obj-c++.dg/selector-4.mm: Likewise.
	* obj-c++.dg/strings/strings.exp: Likewise.
	* obj-c++.dg/stubify-1.mm: Likewise.
	* obj-c++.dg/stubify-2.mm: Likewise.
	* obj-c++.dg/super-dealloc-1.mm: Likewise.
	* obj-c++.dg/super-dealloc-2.mm: Likewise.
	* obj-c++.dg/sync-3.mm: Likewise.
	* obj-c++.dg/syntax-error-2.mm: Likewise.
	* obj-c++.dg/syntax-error-4.mm: Likewise.
	* obj-c++.dg/syntax-error-7.mm: Likewise.
	* obj-c++.dg/syntax-error-9.mm: Likewise.
	* obj-c++.dg/template-4.mm: Likewise.
	* obj-c++.dg/template-7.mm: Likewise.
	* obj-c++.dg/template-8.mm: Likewise.
	* obj-c++.dg/threedotthree-abi-1.mm: Likewise.
	* obj-c++.dg/torture/dg-torture.exp: Likewise.
	* obj-c++.dg/torture/strings/strings.exp: Likewise.
	* obj-c++.dg/try-catch-12.mm: Likewise.
	* obj-c++.dg/try-catch-13.mm: Likewise.

gcc/testsuite/obj-c++.dg/attributes/class-attribute-1.mm

@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 /* Test deprecate attribute with an @interface declaration.  */
 

gcc/testsuite/obj-c++.dg/attributes/class-attribute-2.mm

@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/attributes/class-attribute-3.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, December 2010.  */
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 /* Test that you get a warning when an unknown class attribute is ignored.  */
 

gcc/testsuite/obj-c++.dg/attributes/method-deprecated-1.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, October 2010.  */
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/attributes/method-deprecated-2.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, October 2010.  */
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/attributes/method-deprecated-3.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, October 2010.  */
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/attributes/method-format-1.mm

@@ -1,6 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, October 2010.  */
 /* { dg-do compile } */
 /* { dg-options "-Wall" } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 #include <stdlib.h>

gcc/testsuite/obj-c++.dg/attributes/method-nonnull-1.mm

@@ -1,6 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, May 2011.  */
 /* { dg-do compile } */
 /* { dg-options "-Wall" } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 #include <stdlib.h>

gcc/testsuite/obj-c++.dg/attributes/method-noreturn-1.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, October 2010.  */
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 #include <stdlib.h>

gcc/testsuite/obj-c++.dg/attributes/method-sentinel-1.mm

@@ -1,6 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, October 2010.  */
 /* { dg-do compile } */
 /* { dg-options "-Wall" } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 #include <stdlib.h>

gcc/testsuite/obj-c++.dg/attributes/nsobject-01.mm

@@ -1,5 +1,5 @@
 /* Test handling of the NSObject attribute.  */
-/*  { dg-additional-options "-fsyntax-only " } */
+/* { dg-additional-options "-fsyntax-only -Wno-objc-root-class" } */
 
 typedef struct AnObj * __attribute__ ((NSObject)) AnObjRef;
 typedef struct AnObj * __attribute__ ((__NSObject__)) AnotherObjRef;

gcc/testsuite/obj-c++.dg/attributes/parameter-attribute-1.mm

@@ -1,6 +1,7 @@
 /* Test __attribute__((unused)) for an Objective-C method parameter.  */
 /* { dg-do compile } */
 /* { dg-options "-Wunused-parameter" } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/attributes/parameter-attribute-2.mm

@@ -1,5 +1,6 @@
 /* Test that we get warnings for unrecognized attributes.  */
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/attributes/proto-attribute-1.mm

@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/attributes/proto-attribute-3.mm

@@ -1,7 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-do compile } */
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
-
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 /* Test deprecate attribute with normal @protocol declarations.  */
 

gcc/testsuite/obj-c++.dg/attributes/proto-attribute-4.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, December 2010.  */
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 /* Test that you get a warning when an unknown protocol attribute is ignored.  */
 

gcc/testsuite/obj-c++.dg/attributes/unused-parameter-1.mm

@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+/* { dg-additional-options "-Wno-objc-root-class" } */
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/bad-receiver-type.mm

@@ -1,5 +1,6 @@
 // { dg-do compile } 
 // { dg-options "" }
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface A
 

gcc/testsuite/obj-c++.dg/bitfield-3.mm

@@ -4,6 +4,7 @@
 /* { dg-do run { target *-*-darwin* } } */
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-options "-fsigned-char" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 typedef struct objc_object { struct objc_class *class_pointer; } *id;
 

gcc/testsuite/obj-c++.dg/bitfield-5.mm

@@ -3,6 +3,7 @@
   (@interface vs. @implementation) checks take the bitfield width into account.  */
 /* Author: Ziemowit Laski   <zlaski@apple.com>  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface Base {
   int i;

gcc/testsuite/obj-c++.dg/class-extension-1.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, December 2010.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* This test tests the basic of class extensions.  */
 

gcc/testsuite/obj-c++.dg/class-extension-2.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, December 2010.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* This test tests class extensions and protocols.  */
 

gcc/testsuite/obj-c++.dg/class-extension-3.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, December 2010.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* This test tests warnings on class extensions.  */
 

gcc/testsuite/obj-c++.dg/class-extension-4.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, December 2010.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* This test tests you can not declare a class extension after the class @implementation.  */
 

gcc/testsuite/obj-c++.dg/class-protocol-1.mm

@@ -1,6 +1,7 @@
 /* Check Class <protocol> types */
 /* Author: David Ayers <d.ayers@inode.at> */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 #include "../objc-obj-c++-shared/runtime.h"

gcc/testsuite/obj-c++.dg/comp-types-1.mm

@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface A
 + new;

gcc/testsuite/obj-c++.dg/comp-types-10.mm

@@ -2,6 +2,7 @@
 /* { dg-do compile } */
 /* { dg-prune-output ".*internal compiler error.*" } */
 /* { dg-options "-O3" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @class NSString;
 @protocol NSObject

gcc/testsuite/obj-c++.dg/comp-types-2.mm

@@ -1,6 +1,7 @@
 /* Test various ObjC types assignments and comparisons.  */
 /* Author: Nicola Pero <nicola@brainstorm.co.uk>.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/comp-types-3.mm

@@ -1,6 +1,7 @@
 /* Test simple ObjC types casts.  */
 /* Author: Nicola Pero <nicola@brainstorm.co.uk>.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/comp-types-5.mm

@@ -1,6 +1,7 @@
 /* Test errors for assignments and comparisons between ObjC and C++ types.  */
 /* Author: Nicola Pero <nicola@brainstorm.co.uk>.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/comp-types-6.mm

@@ -1,6 +1,7 @@
 /* Test assignments and comparisons involving `one-off' protocols.  */
 /* Author: Nicola Pero <nicola@brainstorm.co.uk>.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/comp-types-7.mm

@@ -1,6 +1,7 @@
 /* Test assignments and comparisons involving category protocols.  */
 /* Author: Nicola Pero <nicola@brainstorm.co.uk>.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/comp-types-8.mm

@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-additional-options "-Wno-return-type" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* We used to ICE because we removed the cast to List_linked*
    in -[ListIndex_linked next]. */

gcc/testsuite/obj-c++.dg/demangle-2.mm

@@ -1,6 +1,7 @@
 /* Test demangling an Objective-C method.  */
 /* { dg-do run } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <cstring>
 #include <cstdlib>

gcc/testsuite/obj-c++.dg/demangle-3.mm

@@ -1,6 +1,7 @@
 /* Test demangling an Objective-C method in error messages.  */
 /* { dg-do compile } */
 /* { dg-additional-options "-Wno-return-type" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/duplicate-class-1.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* Test that a duplicated @implementation for the same class does not
    crash the compiler.  */

gcc/testsuite/obj-c++.dg/encode-1-next.mm

@@ -5,6 +5,7 @@
 
 /* { dg-do compile } */
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 struct Cxx {
   const struct Cxx *next;

gcc/testsuite/obj-c++.dg/encode-1.mm

@@ -3,6 +3,7 @@
 
 /* { dg-do compile } */
 /* { dg-skip-if "" { *-*-* } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 struct Cxx {
   const struct Cxx *next;

gcc/testsuite/obj-c++.dg/enhanced-proto-2.mm

@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @protocol MyProto1 
 @optional

gcc/testsuite/obj-c++.dg/exceptions-1.mm

@@ -1,6 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-options "-fobjc-exceptions" } */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* This test checks the syntax @catch (...) which catches any
    exceptions.  At the moment, @catch (...) is identical to @catch (id

gcc/testsuite/obj-c++.dg/exceptions-3.mm

@@ -1,6 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-options "-fobjc-exceptions" } */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* Test that the compiler is checking the argument of @catch(), and
    produce errors when invalid types are used.  */

gcc/testsuite/obj-c++.dg/exceptions-4.mm

@@ -1,6 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-options "-fobjc-exceptions" } */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* Test warnings when parsing syntax errors in @catch().  */
 

gcc/testsuite/obj-c++.dg/exceptions-5.mm

@@ -1,6 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-options "-fobjc-exceptions" } */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* Test that you can use an unnamed argument with @catch.  This test is the same
    as exceptions-3.mm, but with no name for @catch arguments.  */

gcc/testsuite/obj-c++.dg/extern-c-1.mm

@@ -1,5 +1,6 @@
 /* Test extern c support inside @implementation */
 /* Devang Patel  <dpatel@apple.com>.  */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/fobjc-std-1.mm

@@ -1,6 +1,7 @@
 /* Test warnings when using -fobjc-std=objc1.  */
 /* { dg-do compile } */
 /* { dg-options "-fobjc-std=objc1" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/gnu-api-2-class-meta.mm

@@ -21,6 +21,7 @@
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
 /* { dg-additional-options "-DOBJC_OLD_DISPATCH_PROTOTYPES" { target { *-*-darwin* } } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-class.mm

@@ -8,6 +8,7 @@
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
 /* { dg-additional-options "-DOBJC_OLD_DISPATCH_PROTOTYPES" { target { *-*-darwin* } } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-ivar.mm

@@ -5,6 +5,7 @@
 /* { dg-do run } */
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-method.mm

@@ -5,6 +5,7 @@
 /* { dg-do run } */
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-objc.mm

@@ -9,6 +9,7 @@
    systems that don't have the V2 APis).  XFAILing the run is not useful
    since it will XPASS on the sub-set that works.  */
 /* { dg-skip-if "Incompatible" { *-*-darwin* } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-objc_msg_lookup.mm

@@ -5,6 +5,7 @@
 
 /* { dg-do run } */
 /* { dg-skip-if "" { *-*-* } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-object.mm

@@ -5,6 +5,7 @@
 /* { dg-do run } */
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-property.mm

@@ -4,6 +4,7 @@
 
 /* { dg-do run } */
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-protocol.mm

@@ -5,6 +5,7 @@
 /* { dg-do run } */
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-resolve-method.mm

@@ -5,6 +5,7 @@
 
 /* { dg-do run } */
 /* { dg-skip-if "" { *-*-* } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/gnu-api-2-sel.mm

@@ -4,6 +4,7 @@
 
 /* { dg-do run } */
 /* { dg-skip-if "No API#2 pre-Darwin9" { *-*-darwin[5-8]* } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* To get the modern GNU Objective-C Runtime API, you include
    objc/runtime.h.  */

gcc/testsuite/obj-c++.dg/invalid-method-2.mm

@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* Test that using an invalid type in a method declaration produces a
    friendly error without a compiler crash.  */

gcc/testsuite/obj-c++.dg/ivar-invalid-type-1.mm

@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 #include <objc/objc.h>
 
 @interface MyRootClass

gcc/testsuite/obj-c++.dg/ivar-problem-1.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* This test checks what happens if there are 16 instance variables.
    In that case, the class was not created correctly.  In this testcase,

gcc/testsuite/obj-c++.dg/lto/lto.exp

@@ -41,10 +41,10 @@ if { ![check_effective_target_lto] } {
 global LTO_OPTIONS
 
 set LTO_OPTIONS [list	\
-  {-O0 -flto -fgnu-runtime}	\
-  {-O2 -flto -fgnu-runtime}	\
-  {-O0 -flto -flto-partition=none -fgnu-runtime} 	\
-  {-O2 -flto -flto-partition=none -fgnu-runtime}	\
+  {-O0 -flto -fgnu-runtime -Wno-objc-root-class}	\
+  {-O2 -flto -fgnu-runtime -Wno-objc-root-class}	\
+  {-O0 -flto -flto-partition=none -fgnu-runtime -Wno-objc-root-class} 	\
+  {-O2 -flto -flto-partition=none -fgnu-runtime -Wno-objc-root-class}	\
 ]
 
 obj-c++_init
@@ -67,10 +67,10 @@ foreach src $tests {
 # darwin targets can also run code with the NeXT runtime.
 if [istarget "*-*-darwin*" ] {
 set LTO_OPTIONS [list	\
-  {-O0 -flto -fnext-runtime}	\
-  {-O2 -flto -fnext-runtime}	\
-  {-O0 -flto -flto-partition=none -fnext-runtime} 	\
-  {-O2 -flto -flto-partition=none -fnext-runtime}	\
+  {-O0 -flto -fnext-runtime -Wno-objc-root-class}	\
+  {-O2 -flto -fnext-runtime -Wno-objc-root-class}	\
+  {-O0 -flto -flto-partition=none -fnext-runtime -Wno-objc-root-class} 	\
+  {-O2 -flto -flto-partition=none -fnext-runtime -Wno-objc-root-class}	\
 ]
   foreach src $tests {
     # If we're only testing specific files and this isn't one of them, skip it.

gcc/testsuite/obj-c++.dg/lto/trivial-1_0.mm

@@ -1,5 +1,5 @@
 /* { dg-lto-do run } */
-/* { dg-skip-if "Needs OBJC2 ABI" { "*-*-darwin*" && lp64 } } */
+
 extern "C" {
 extern int printf (const char *,...) ;
 extern void abort (void) ;

gcc/testsuite/obj-c++.dg/method-1.mm

@@ -3,6 +3,7 @@
 /* Author: Ziemowit Laski <zlaski@apple.com>.  */
 
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/method-12.mm

@@ -3,6 +3,7 @@
 /* { dg-options "-Wstrict-selector-match" } */
 /* { dg-do compile } */
 /* { dg-skip-if "Object interface removed" { *-*-darwin[1-2]* && { lp64 } } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/Protocol.h>
 

gcc/testsuite/obj-c++.dg/method-18.mm

@@ -1,5 +1,6 @@
 /* Contributed by Igor Seleznev <selez@mail.ru>.  */
 /* This used to be broken.  */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/method-19.mm

@@ -4,6 +4,7 @@
 /* Author: Ziemowit Laski <zlaski@apple.com>.  */
 /* { dg-do run } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 #include <objc/objc.h>
 #include "../objc-obj-c++-shared/runtime.h"
 

gcc/testsuite/obj-c++.dg/method-20.mm

@@ -2,6 +2,7 @@
    used as method selectors.  */
 /* Author: Ziemowit Laski <zlaski@apple.com>.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface Foo
 - (void)insertNewButtonImage:(Foo *)newButtonImage in:(Foo *)buttonCell;

gcc/testsuite/obj-c++.dg/method-3.mm

@@ -3,6 +3,7 @@
 
 /* { dg-do compile } */
 /* { dg-options "-Wno-strict-selector-match" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/method-4.mm

@@ -3,6 +3,7 @@
 
 /* { dg-do compile } */
 /* { dg-options "-Wstrict-selector-match" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/method-5.mm

@@ -3,6 +3,7 @@
 
 /* { dg-do compile } */
 /* { dg-options "-Wno-strict-selector-match" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/method-8.mm

@@ -1,5 +1,6 @@
 /* Tests of duplication.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface class1
 - (int) meth1;   /* { dg-message "previous declaration" } */

gcc/testsuite/obj-c++.dg/method-9.mm

@@ -1,6 +1,7 @@
 /* Test for lookup of class (factory) methods.  */
 /* Author: Ziemowit Laski <zlaski@apple.com>.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface MyBase 
 - (void) rootInstanceMethod;

gcc/testsuite/obj-c++.dg/method-namespace-1.mm

@@ -1,5 +1,6 @@
 /* Test for usage of namespace inside @implementation. */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 @interface MyDocument
 @end
 

gcc/testsuite/obj-c++.dg/plugin/diagnostic-test-expressions-1.mm

@@ -1,6 +1,7 @@
 /* { dg-do compile } */
 /* { dg-options "-O -fdiagnostics-show-caret" } */
 /* { dg-excess-errors "tree range 0:0-0:0" { target { *-*-darwin* } } }  */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* This file is similar to diagnostic-test-expressions-1.c
    (see the notes in that file); this file adds test

gcc/testsuite/obj-c++.dg/pr23709.mm

@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface A
 +(void)method: (int)parameter {} /* { dg-error "expected" } */

gcc/testsuite/obj-c++.dg/pragma-2.mm

@@ -1,5 +1,6 @@
 /* It is OK to use #pragma inside @implementation body. This test checks that.  */
 /* Ziemowit Laski  <zlaski@apple.com>.  */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface A
 {

gcc/testsuite/obj-c++.dg/private-1.mm

@@ -1,6 +1,7 @@
 /* Test errors for accessing @private and @protected variables.  */
 /* Based on work by: Nicola Pero <nicola@brainstorm.co.uk>.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 #include <objc/objc.h>
 
 @interface MySuperClass

gcc/testsuite/obj-c++.dg/private-2.mm

@@ -2,6 +2,7 @@
 /* Based on work by: Nicola Pero <nicola@brainstorm.co.uk>.  */
 
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/property/property.exp

@@ -31,12 +31,12 @@ dg-init
 set tests [lsort [glob -nocomplain $srcdir/$subdir/*.mm]]
 
 # Main loop.
-dg-runtest $tests "-fgnu-runtime" $DEFAULT_OBJCXXFLAGS
+dg-runtest $tests "-fgnu-runtime -Wno-objc-root-class" $DEFAULT_OBJCXXFLAGS
 
 # Darwin targets can also run code with the NeXT runtime.
 # but Properties are not supported by the runtime lib before Darwin 9.
 if [istarget "*-*-darwin\[9123\]*" ] {
-  dg-runtest $tests "-fnext-runtime" $DEFAULT_OBJCXXFLAGS
+  dg-runtest $tests "-fnext-runtime -Wno-objc-root-class" $DEFAULT_OBJCXXFLAGS
 }
 
 # All done.

gcc/testsuite/obj-c++.dg/proto-lossage-1.mm

@@ -2,6 +2,7 @@
    may be lost, leading to superfluous warnings.  */
 /* Author: Ziemowit Laski <zlaski@apple.com>.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* One-line substitute for objc/objc.h */
 typedef struct objc_object { struct objc_class *class_pointer; } *id;

gcc/testsuite/obj-c++.dg/proto-lossage-5.mm

@@ -1,5 +1,6 @@
 /* Do not lose references to forward-declared protocols.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 @class MyBaseClass;
 @class MyClassThatFails;
 @protocol _MyProtocol;

gcc/testsuite/obj-c++.dg/proto-qual-1.mm

@@ -3,6 +3,7 @@
 
 /* { dg-do run } */
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <stdio.h>
 #include <stdlib.h>

gcc/testsuite/obj-c++.dg/protocol-inheritance-1.mm

@@ -1,6 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-do compile } */
 /* { dg-options "-Wno-protocol" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/protocol-inheritance-2.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/protocol-optional-1.mm

@@ -1,5 +1,6 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/selector-1.mm

@@ -3,6 +3,7 @@
 /* Author: Ziemowit Laski <zlaski@apple.com>.  */
 
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface Int1 
 + (int)and_eq:(int)arg1 and:(int)arg2;

gcc/testsuite/obj-c++.dg/selector-2.mm

@@ -1,6 +1,7 @@
 /* Test that we don't ICE when issuing a -Wselector warning.  */
 /* { dg-options "-Wselector" } */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <objc/objc.h>
 

gcc/testsuite/obj-c++.dg/selector-3.mm

@@ -2,6 +2,7 @@
 /* This is the "-fgnu-runtime" variant of objc.dg/selector-1.m.  */
 /* { dg-options "-Wselector -fgnu-runtime" } */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 typedef struct objc_object { struct objc_class *class_pointer; } *id;
 typedef const struct objc_selector    *SEL;

gcc/testsuite/obj-c++.dg/selector-4.mm

@@ -3,6 +3,7 @@
 
 /* { dg-options "-Wselector -fnext-runtime" } */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 typedef struct objc_object { struct objc_class *class_pointer; } *id;
 typedef struct objc_selector *SEL;

gcc/testsuite/obj-c++.dg/strings/strings.exp

@@ -34,11 +34,11 @@ dg-init
 set tests [lsort [glob -nocomplain $srcdir/$subdir/*.mm]]
 
 # Main loop.
-dg-runtest $tests "-fgnu-runtime" $DEFAULT_OBJCXXFLAGS
+dg-runtest $tests "-fgnu-runtime -Wno-objc-root-class" $DEFAULT_OBJCXXFLAGS
 
 # darwin targets can also run code with the NeXT runtime.
 if [istarget "*-*-darwin*" ] {
-  dg-runtest $tests "-fnext-runtime" $DEFAULT_OBJCXXFLAGS
+  dg-runtest $tests "-fnext-runtime -Wno-objc-root-class" $DEFAULT_OBJCXXFLAGS
 }
 
 # All done.

gcc/testsuite/obj-c++.dg/stubify-1.mm

@@ -5,6 +5,7 @@
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-require-effective-target ilp32 } */
 /* { dg-options "-Os -mdynamic-no-pic -fno-exceptions -mmacosx-version-min=10.4 -msymbol-stubs" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 typedef struct objc_object { } *id ;
 int x = 41 ;

gcc/testsuite/obj-c++.dg/stubify-2.mm

@@ -5,6 +5,7 @@
 /* { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } } */
 /* { dg-require-effective-target ilp32 } */
 /* { dg-options "-mdynamic-no-pic -fdump-rtl-jump -mmacosx-version-min=10.4 -msymbol-stubs" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 typedef struct objc_object { } *id ;
 int x = 41 ;

gcc/testsuite/obj-c++.dg/super-dealloc-1.mm

@@ -2,6 +2,7 @@
 /* Author: Ziemowit Laski <zlaski@apple.com>  */
 
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface Foo {
   void *isa;

gcc/testsuite/obj-c++.dg/super-dealloc-2.mm

@@ -2,6 +2,7 @@
 /* Author: Ziemowit Laski <zlaski@apple.com>  */
 
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface Foo {
   void *isa;

gcc/testsuite/obj-c++.dg/sync-3.mm

@@ -1,6 +1,7 @@
 /* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, December 2010.  */
 /* { dg-options "-fobjc-exceptions" } */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 /* Test that the compiler is checking the argument of @synchronized(),
    and produce errors when invalid types are used.  */

gcc/testsuite/obj-c++.dg/syntax-error-2.mm

@@ -1,4 +1,5 @@
 /* Recover gracefully from a syntax error.  */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @implementation Whatever  /* { dg-warning "cannot find interface declaration for .Whatever." } */
 

gcc/testsuite/obj-c++.dg/syntax-error-4.mm

@@ -1,5 +1,6 @@
 /* Yet another stray infinite loop... */
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface t
 {

gcc/testsuite/obj-c++.dg/syntax-error-7.mm

@@ -1,4 +1,5 @@
 /* { dg-do compile } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 @interface Foo
 -(void) someMethod;

gcc/testsuite/obj-c++.dg/syntax-error-9.mm

@@ -1,3 +1,4 @@
+// { dg-additional-options "-Wno-objc-root-class" }
 @implementation SaturnDoc /* { dg-warning "cannot find interface declaration" } */
 - read: (void*)aStream ggg /* { dg-error "expected .:. at end of input" } */
 /* { dg-error "-:expected ..*. at end of input" "" { target *-*-* } .+1 } */

gcc/testsuite/obj-c++.dg/template-4.mm

@@ -4,6 +4,7 @@
 /* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
 /* { dg-options "-mno-constant-cfstrings" { target *-*-darwin* } } */
 /* { dg-additional-sources "../objc-obj-c++-shared/nsconstantstring-class-impl.mm" } */
+// { dg-additional-options "-Wno-objc-root-class" }
 
 #include <stdarg.h>
 #include <stdlib.h>

gcc/testsuite/obj-c++.dg/template-7.mm

@@ -3,6 +3,7 @@
 // Author: Fariborz Jahanian <fjahanian@apple.com>
 // { dg-do compile }
 // { dg-options "" }
+// { dg-additional-options "-Wno-objc-root-class" }
 typedef struct objc_class *Class;
 
 @interface Object