Do not diagnose method disguised as property setter

for a 'readonly' property. Fixes radar 7427072.

llvm-svn: 92808

clang/lib/Sema/SemaDeclObjC.cpp

@@ -1473,8 +1473,11 @@ void Sema::ProcessPropertyDecl(ObjCPropertyDecl *property,
                                    property->getLocation());
 
   if (SetterMethod) {
-    if (Context.getCanonicalType(SetterMethod->getResultType())
+    ObjCPropertyDecl::PropertyAttributeKind CAttr = 
-        != Context.VoidTy)
+      property->getPropertyAttributes();
+    if ((!(CAttr & ObjCPropertyDecl::OBJC_PR_readonly)) &&
+        Context.getCanonicalType(SetterMethod->getResultType()) != 
+          Context.VoidTy)
       Diag(SetterMethod->getLocation(), diag::err_setter_type_void);
     if (SetterMethod->param_size() != 1 ||
         ((*SetterMethod->param_begin())->getType() != property->getType())) {

clang/test/SemaObjC/property-9.m

@@ -84,3 +84,15 @@ typedef signed char BOOL;
   view.inEyeDropperMode = 1;
 }
 @end
+
+// radar 7427072
+@interface MyStyleIntf 
+{
+    int _myStyle;
+}
+
+@property(readonly) int myStyle;
+
+- (float)setMyStyle:(int)style;
+@end
+