2010-11-08 Nicola Pero <nicola.pero@meta-innovation.com>
+ * objc-act.c (objc_add_dynamic_declaration_for_property): Do not
+ search for the @property declation only in the current context,
+ but also in inherited properties. Do not mark the original
+ PROPERTY_DECL in the @interface or @protocol with
+ PROPERTY_DYNAMIC.
+ (check_methods): To check if a method is associated with a
+ @dynamic property, search for the property in IMPL_PROPERTY_DECL.
+ (check_accessible_methods): Same change.
+ * objc-act.h: Updated comment.
+
+2010-11-08 Nicola Pero <nicola.pero@meta-innovation.com>
+
* objc-act.c (objc_add_synthesize_declaration_for_property):
Iterate over IMPL_PROPERTY_DECL, not CLASS_PROPERTY_DECL, when
checking for an existing @synthesize or @dynamic declaration.
{
/* If the method is associated with a dynamic property, then it
is Ok not to have the method implementation, as it will be
- generated dynamically at runtime. */
- tree property = METHOD_PROPERTY_CONTEXT (chain);
- if (property != NULL_TREE && PROPERTY_DYNAMIC (property))
+ generated dynamically at runtime. To decide if the method is
+ associated with a @dynamic property, we search the list of
+ @synthesize and @dynamic for this implementation, and look
+ for any @dynamic property with the same setter or getter name
+ as this method. */
+ tree x;
+ for (x = IMPL_PROPERTY_DECL (implementation); x; x = TREE_CHAIN (x))
+ if (PROPERTY_DYNAMIC (x)
+ && (PROPERTY_GETTER_NAME (x) == METHOD_SEL_NAME (chain)
+ || PROPERTY_SETTER_NAME (x) == METHOD_SEL_NAME (chain)))
+ break;
+
+ if (x != NULL_TREE)
{
chain = TREE_CHAIN (chain); /* next method... */
continue;
/* If the method is a property setter/getter, we'll still
allow it to be missing if it is implemented by
'interface' or any of its superclasses. */
+ tree property = METHOD_PROPERTY_CONTEXT (chain);
if (property)
{
/* Note that since this is a property getter/setter, it
{
/* If the method is associated with a dynamic property, then it
is Ok not to have the method implementation, as it will be
- generated dynamically at runtime. */
- tree property = METHOD_PROPERTY_CONTEXT (chain);
- if (property != NULL_TREE && PROPERTY_DYNAMIC (property))
+ generated dynamically at runtime. Search for any @dynamic
+ property with the same setter or getter name as this
+ method. TODO: Use a hashtable lookup. */
+ tree x;
+ for (x = IMPL_PROPERTY_DECL (base_context); x; x = TREE_CHAIN (x))
+ if (PROPERTY_DYNAMIC (x)
+ && (PROPERTY_GETTER_NAME (x) == METHOD_SEL_NAME (chain)
+ || PROPERTY_SETTER_NAME (x) == METHOD_SEL_NAME (chain)))
+ break;
+
+ if (x != NULL_TREE)
{
chain = TREE_CHAIN (chain); /* next method... */
continue;
- }
+ }
context = base_context;
while (context)
return;
}
- /* Check that the property is declared in the corresponding
- interface. */
- for (property = CLASS_PROPERTY_DECL (interface); property; property = TREE_CHAIN (property))
- if (PROPERTY_NAME (property) == property_name)
- break;
+ /* Check that the property is declared in the interface. It could
+ also be declared in a superclass or protocol. */
+ property = lookup_property (interface, property_name);
if (!property)
{
}
else
{
- /* Mark the original PROPERTY_DECL as dynamic. The reason is
- that the setter and getter methods in the interface have a
- METHOD_PROPERTY_CONTEXT that points to the original
- PROPERTY_DECL; when we check that these methods have been
- implemented, we need to easily find that they are associated
- with a dynamic property. TODO: Remove this hack; it will not
- work with properties in a protocol that may be implemented by
- different classes and be @dynamic in some, and non-@dynamic
- in other ones. */
- PROPERTY_DYNAMIC (property) = 1;
-
/* We have to copy the property, because we want to chain it to
the implementation context, and we want to store the source
location of the @synthesize, not of the original
#define PROPERTY_IVAR_NAME(DECL) ((DECL)->decl_common.initial)
/* PROPERTY_DYNAMIC can be 0 or 1. This is 1 if the PROPERTY_DECL
- represents a @dynamic (or if it is a @property for which a @dynamic
- declaration has been parsed); otherwise, it is set to 0. */
+ represents a @dynamic; otherwise, it is set to 0. */
#define PROPERTY_DYNAMIC(DECL) DECL_LANG_FLAG_2 (DECL)
/* PROPERTY_HAS_NO_GETTER can be 0 or 1. Normally it is 0, but if
2010-11-08 Nicola Pero <nicola.pero@meta-innovation.com>
+ * objc.dg/property/dotsyntax-13.m: New.
+ * objc.dg/property/dotsyntax-14.m: New.
+ * objc.dg/property/dotsyntax-15.m: New.
+ * objc.dg/property/synthesize-7.m: New.
+ * obj-c++.dg/property/dotsyntax-13.mm: New.
+ * obj-c++.dg/property/dotsyntax-14.mm: New.
+ * obj-c++.dg/property/dotsyntax-15.mm: New.
+ * obj-c++.dg/property/synthesize-7.mm: New.
+
+2010-11-08 Nicola Pero <nicola.pero@meta-innovation.com>
+
+ * objc.dg/property/dynamic-4.m: New.
+ * objc.dg/property/dynamic-5.m: New.
+ * objc.dg/property/dynamic-6.m: New.
+ * obj-c++.dg/property/dynamic-4.mm: New.
+ * obj-c++.dg/property/dynamic-5.mm: New.
+ * obj-c++.dg/property/dynamic-6.mm: New.
+
+2010-11-08 Nicola Pero <nicola.pero@meta-innovation.com>
+
* objc.dg/property/synthesize-3.m: New.
* objc.dg/property/synthesize-4.m: New.
* objc.dg/property/synthesize-5.m: New.
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do run } */
+/* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+
+/* Test dot-syntax with a local variable. */
+
+#include <stdlib.h>
+#include <objc/objc.h>
+#include <objc/runtime.h>
+
+@interface MyRootClass
+{
+ Class isa;
+ int a;
+}
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+- (int) count;
+- (void) setCount: (int)count;
+@end
+
+@implementation MyRootClass
++ (id) initialize { return self; }
++ (id) alloc { return class_createInstance (self, 0); }
+- (id) init { return self; }
+- (int) count
+{
+ return a;
+}
+- (void) setCount: (int)count
+{
+ a = count;
+}
+@end
+
+int main (void)
+{
+ MyRootClass *object = [[MyRootClass alloc] init];
+ int i;
+
+ for (i = 0; i < 10; i++)
+ {
+ object.count = i;
+
+ if (object.count != i)
+ abort ();
+ }
+
+ return 0;
+}
+
+
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do compile } */
+
+/* Test dot-syntax with accessors to be looked up in protocol @properties. */
+
+#include <stdlib.h>
+#include <objc/objc.h>
+#include <objc/runtime.h>
+
+@protocol ProtocolA
+@property int countA;
+@end
+
+@protocol ProtocolB
+@property int countB;
+@end
+
+@protocol ProtocolC
+@property int countC;
+@end
+
+@interface MyRootClass
+{
+ Class isa;
+}
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+@end
+
+@interface MySubClass <ProtocolA, ProtocolB, ProtocolC>
+@end
+
+int function (MySubClass *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function2 (MyRootClass <ProtocolA, ProtocolB, ProtocolC> *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function3 (MyRootClass <ProtocolA, ProtocolB> *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB; /* { dg-error "request for member .countC. in" } */
+
+ return object.countC; /* { dg-error "request for member .countC. in" } */
+}
+
+int function4 (id <ProtocolA, ProtocolB, ProtocolC> object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function5 (id <ProtocolA, ProtocolB> object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB; /* { dg-error "request for member .countC. in" } */
+
+ return object.countC; /* { dg-error "request for member .countC. in" } */
+}
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do compile } */
+
+/* Test dot-syntax with accessors to be looked up in protocols. */
+
+#include <stdlib.h>
+#include <objc/objc.h>
+#include <objc/runtime.h>
+
+@protocol ProtocolA
+- (int) countA;
+- (void) setCountA: (int)aNumber;
+@end
+
+@protocol ProtocolB
+- (int) countB;
+- (void) setCountB: (int)aNumber;
+@end
+
+@protocol ProtocolC
+- (int) countC;
+- (void) setCountC: (int)aNumber;
+@end
+
+@interface MyRootClass
+{
+ Class isa;
+}
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+@end
+
+@interface MySubClass <ProtocolA, ProtocolB, ProtocolC>
+@end
+
+int function (MySubClass *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function2 (MyRootClass <ProtocolA, ProtocolB, ProtocolC> *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function3 (MyRootClass <ProtocolA, ProtocolB> *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB; /* { dg-error "request for member .countC. in" } */
+
+ return object.countC; /* { dg-error "request for member .countC. in" } */
+}
+
+int function4 (id <ProtocolA, ProtocolB, ProtocolC> object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function5 (id <ProtocolA, ProtocolB> object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB; /* { dg-error "request for member .countC. in" } */
+
+ return object.countC; /* { dg-error "request for member .countC. in" } */
+}
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do compile } */
+
+#include <objc/objc.h>
+
+@interface MyRootClass
+{
+ Class isa;
+}
+@end
+
+@implementation MyRootClass
+@end
+
+/* Test @property/@dynamic with protocols. */
+
+@protocol MyProtocol
+@property int a;
+@end
+
+
+/* This class is declared to conform to the protocol, but because of
+ @dynamic, no warnings are issued even if the getter/setter for the
+ @property are missing. */
+@interface MyClass1 : MyRootClass <MyProtocol>
+@end
+
+@implementation MyClass1
+@dynamic a;
+@end
+
+
+/* This class is declared to conform to the protocol and warnings are
+ issued because the setter for the @property is missing. */
+@interface MyClass2 : MyRootClass <MyProtocol>
+@end
+
+@implementation MyClass2
+- (int) a
+{
+ return 0;
+}
+@end /* { dg-warning "incomplete implementation" } */
+/* { dg-warning "method definition for .-setA:. not found" "" { target *-*-* } 43 } */
+/* { dg-warning "class .MyClass2. does not fully implement the .MyProtocol. protocol" "" { target *-*-* } 43 } */
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do run } */
+/* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+
+/* Test @dynamic in the real scenario where a class declares a
+ @property, uses @dynamic to avoid implementing it, then subclasses
+ implement it. */
+
+#include <objc/objc.h>
+#include <objc/runtime.h>
+#include <stdlib.h>
+
+@interface MyRootClass
+{
+ Class isa;
+}
+@property int a;
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+@end
+
+@implementation MyRootClass
++ (id) initialize { return self; }
++ (id) alloc { return class_createInstance (self, 0); }
+- (id) init { return self; }
+@dynamic a;
+@end
+
+@interface Test : MyRootClass
+{
+ int v1;
+}
+@end
+
+@implementation Test
+@synthesize a = v1;
+@end
+
+int main (void)
+{
+ /* Note how 'object' is declared to be of class 'MyRootClass', but
+ actually is of the subclass which implements the property for
+ real. */
+ MyRootClass *object = [[Test alloc] init];
+
+ object.a = 40;
+
+ if (object.a != 40)
+ abort ();
+
+ return 0;
+}
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do compile } */
+
+/* Test case when an accessor from a @property matches a method
+ required by a protocol. If the @property is @dynamic, then no
+ warning should be generated. */
+
+#include <objc/objc.h>
+#include <objc/runtime.h>
+#include <stdlib.h>
+
+@protocol Count
+- (int) count;
+@end
+
+@interface MyRootClass <Count>
+{
+ Class isa;
+}
+@property int count;
+@end
+
+@implementation MyRootClass
+/* This @dynamic turns off any warnings for -count and -setCount:. */
+@dynamic count;
+@end
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do run } */
+/* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+
+/* Test @synthesize with protocols of protocols. */
+
+#include <stdlib.h>
+#include <objc/objc.h>
+#include <objc/runtime.h>
+
+@protocol ProtocolA
+@property int countA;
+@end
+
+@protocol ProtocolB <ProtocolA>
+@property int countB;
+@end
+
+@protocol ProtocolC <ProtocolB>
+@property int countC;
+@end
+
+@protocol ProtocolD
+@property int countD;
+@end
+
+@interface MyRootClass <ProtocolC>
+{
+ Class isa;
+ int countA;
+ int countB;
+ int countC;
+}
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+@end
+
+@implementation MyRootClass
++ (id) initialize { return self; }
++ (id) alloc { return class_createInstance (self, 0); }
+- (id) init { return self; }
+@synthesize countA;
+@synthesize countB;
+@synthesize countC;
+@end
+
+@interface MySubClass : MyRootClass <ProtocolD>
+{
+ int countD;
+}
+@end
+
+@implementation MySubClass
+@synthesize countD;
+@end
+
+int main (void)
+{
+ MySubClass *object = [[MySubClass alloc] init];
+ int i;
+
+ for (i = 0; i < 10; i++)
+ {
+ object.countA += i;
+ object.countB += i + 1;
+ object.countC += i + 2;
+ object.countD += i + 3;
+ }
+
+ if (object.countA != 45)
+ abort ();
+
+ if (object.countB != 55)
+ abort ();
+
+ if (object.countC != 65)
+ abort ();
+
+ if (object.countD != 75)
+ abort ();
+
+ return 0;
+}
+
+
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do run } */
+/* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+
+/* Test dot-syntax with a local variable. */
+
+#include <stdlib.h>
+#include <objc/objc.h>
+#include <objc/runtime.h>
+
+@interface MyRootClass
+{
+ Class isa;
+ int a;
+}
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+- (int) count;
+- (void) setCount: (int)count;
+@end
+
+@implementation MyRootClass
++ (id) initialize { return self; }
++ (id) alloc { return class_createInstance (self, 0); }
+- (id) init { return self; }
+- (int) count
+{
+ return a;
+}
+- (void) setCount: (int)count
+{
+ a = count;
+}
+@end
+
+int main (void)
+{
+ MyRootClass *object = [[MyRootClass alloc] init];
+ int i;
+
+ for (i = 0; i < 10; i++)
+ {
+ object.count = i;
+
+ if (object.count != i)
+ abort ();
+ }
+
+ return 0;
+}
+
+
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do compile } */
+
+/* Test dot-syntax with accessors to be looked up in protocol @properties. */
+
+#include <stdlib.h>
+#include <objc/objc.h>
+#include <objc/runtime.h>
+
+@protocol ProtocolA
+@property int countA;
+@end
+
+@protocol ProtocolB
+@property int countB;
+@end
+
+@protocol ProtocolC
+@property int countC;
+@end
+
+@interface MyRootClass
+{
+ Class isa;
+}
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+@end
+
+@interface MySubClass <ProtocolA, ProtocolB, ProtocolC>
+@end
+
+int function (MySubClass *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function2 (MyRootClass <ProtocolA, ProtocolB, ProtocolC> *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function3 (MyRootClass <ProtocolA, ProtocolB> *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB; /* { dg-error "request for member .countC. in something not a structure or union" } */
+
+ return object.countC; /* { dg-error "request for member .countC. in something not a structure or union" } */
+}
+
+int function4 (id <ProtocolA, ProtocolB, ProtocolC> object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function5 (id <ProtocolA, ProtocolB> object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB; /* { dg-error "request for member .countC. in something not a structure or union" } */
+
+ return object.countC; /* { dg-error "request for member .countC. in something not a structure or union" } */
+}
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do compile } */
+
+/* Test dot-syntax with accessors to be looked up in protocols. */
+
+#include <stdlib.h>
+#include <objc/objc.h>
+#include <objc/runtime.h>
+
+@protocol ProtocolA
+- (int) countA;
+- (void) setCountA: (int)aNumber;
+@end
+
+@protocol ProtocolB
+- (int) countB;
+- (void) setCountB: (int)aNumber;
+@end
+
+@protocol ProtocolC
+- (int) countC;
+- (void) setCountC: (int)aNumber;
+@end
+
+@interface MyRootClass
+{
+ Class isa;
+}
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+@end
+
+@interface MySubClass <ProtocolA, ProtocolB, ProtocolC>
+@end
+
+int function (MySubClass *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function2 (MyRootClass <ProtocolA, ProtocolB, ProtocolC> *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function3 (MyRootClass <ProtocolA, ProtocolB> *object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB; /* { dg-error "request for member .countC. in something not a structure or union" } */
+
+ return object.countC; /* { dg-error "request for member .countC. in something not a structure or union" } */
+}
+
+int function4 (id <ProtocolA, ProtocolB, ProtocolC> object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB;
+
+ return object.countC;
+}
+
+int function5 (id <ProtocolA, ProtocolB> object, int x)
+{
+ object.countA = x;
+ object.countB = x;
+ object.countC = object.countB; /* { dg-error "request for member .countC. in something not a structure or union" } */
+
+ return object.countC; /* { dg-error "request for member .countC. in something not a structure or union" } */
+}
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do compile } */
+
+#include <objc/objc.h>
+
+@interface MyRootClass
+{
+ Class isa;
+}
+@end
+
+@implementation MyRootClass
+@end
+
+/* Test @property/@dynamic with protocols. */
+
+@protocol MyProtocol
+@property int a;
+@end
+
+
+/* This class is declared to conform to the protocol, but because of
+ @dynamic, no warnings are issued even if the getter/setter for the
+ @property are missing. */
+@interface MyClass1 : MyRootClass <MyProtocol>
+@end
+
+@implementation MyClass1
+@dynamic a;
+@end
+
+
+/* This class is declared to conform to the protocol and warnings are
+ issued because the setter for the @property is missing. */
+@interface MyClass2 : MyRootClass <MyProtocol>
+@end
+
+@implementation MyClass2
+- (int) a
+{
+ return 0;
+}
+@end /* { dg-warning "incomplete implementation" } */
+/* { dg-warning "method definition for .-setA:. not found" "" { target *-*-* } 43 } */
+/* { dg-warning "class .MyClass2. does not fully implement the .MyProtocol. protocol" "" { target *-*-* } 43 } */
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do run } */
+/* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+
+/* Test @dynamic in the real scenario where a class declares a
+ @property, uses @dynamic to avoid implementing it, then subclasses
+ implement it. */
+
+#include <objc/objc.h>
+#include <objc/runtime.h>
+#include <stdlib.h>
+
+@interface MyRootClass
+{
+ Class isa;
+}
+@property int a;
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+@end
+
+@implementation MyRootClass
++ (id) initialize { return self; }
++ (id) alloc { return class_createInstance (self, 0); }
+- (id) init { return self; }
+@dynamic a;
+@end
+
+@interface Test : MyRootClass
+{
+ int v1;
+}
+@end
+
+@implementation Test
+@synthesize a = v1;
+@end
+
+int main (void)
+{
+ /* Note how 'object' is declared to be of class 'MyRootClass', but
+ actually is of the subclass which implements the property for
+ real. */
+ MyRootClass *object = [[Test alloc] init];
+
+ object.a = 40;
+
+ if (object.a != 40)
+ abort ();
+
+ return 0;
+}
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do compile } */
+
+/* Test case when an accessor from a @property matches a method
+ required by a protocol. If the @property is @dynamic, then no
+ warning should be generated. */
+
+#include <objc/objc.h>
+#include <objc/runtime.h>
+#include <stdlib.h>
+
+@protocol Count
+- (int) count;
+@end
+
+@interface MyRootClass <Count>
+{
+ Class isa;
+}
+@property int count;
+@end
+
+@implementation MyRootClass
+/* This @dynamic turns off any warnings for -count and -setCount:. */
+@dynamic count;
+@end
--- /dev/null
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
+/* { dg-do run } */
+/* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
+
+/* Test @synthesize with protocols of protocols. */
+
+#include <stdlib.h>
+#include <objc/objc.h>
+#include <objc/runtime.h>
+
+@protocol ProtocolA
+@property int countA;
+@end
+
+@protocol ProtocolB <ProtocolA>
+@property int countB;
+@end
+
+@protocol ProtocolC <ProtocolB>
+@property int countC;
+@end
+
+@protocol ProtocolD
+@property int countD;
+@end
+
+@interface MyRootClass <ProtocolC>
+{
+ Class isa;
+ int countA;
+ int countB;
+ int countC;
+}
++ (id) initialize;
++ (id) alloc;
+- (id) init;
+@end
+
+@implementation MyRootClass
++ (id) initialize { return self; }
++ (id) alloc { return class_createInstance (self, 0); }
+- (id) init { return self; }
+@synthesize countA;
+@synthesize countB;
+@synthesize countC;
+@end
+
+@interface MySubClass : MyRootClass <ProtocolD>
+{
+ int countD;
+}
+@end
+
+@implementation MySubClass
+@synthesize countD;
+@end
+
+int main (void)
+{
+ MySubClass *object = [[MySubClass alloc] init];
+ int i;
+
+ for (i = 0; i < 10; i++)
+ {
+ object.countA += i;
+ object.countB += i + 1;
+ object.countC += i + 2;
+ object.countD += i + 3;
+ }
+
+ if (object.countA != 45)
+ abort ();
+
+ if (object.countB != 55)
+ abort ();
+
+ if (object.countC != 65)
+ abort ();
+
+ if (object.countD != 75)
+ abort ();
+
+ return 0;
+}
+
+
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