Objective-C [qoi]: When an class conforms to multiple
protocols that declare the same property of incompatible
types, issue a warning when class implementation synthesizes
the property. // rdar://13075400
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@182316 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclObjC.cpp b/lib/AST/DeclObjC.cpp
index 4ddbb22..0291803 100644
--- a/lib/AST/DeclObjC.cpp
+++ b/lib/AST/DeclObjC.cpp
@@ -1493,6 +1493,30 @@
}
}
+
+void ObjCProtocolDecl::collectInheritedProtocolProperties(
+ const ObjCPropertyDecl *Property,
+ ProtocolPropertyMap &PM) const {
+ if (const ObjCProtocolDecl *PDecl = getDefinition()) {
+ bool MatchFound = false;
+ for (ObjCProtocolDecl::prop_iterator P = PDecl->prop_begin(),
+ E = PDecl->prop_end(); P != E; ++P) {
+ ObjCPropertyDecl *Prop = *P;
+ if (Prop == Property)
+ continue;
+ if (Prop->getIdentifier() == Property->getIdentifier()) {
+ PM[PDecl] = Prop;
+ MatchFound = true;
+ break;
+ }
+ }
+ // Scan through protocol's protocols which did not have a matching property.
+ if (!MatchFound)
+ for (ObjCProtocolDecl::protocol_iterator PI = PDecl->protocol_begin(),
+ E = PDecl->protocol_end(); PI != E; ++PI)
+ (*PI)->collectInheritedProtocolProperties(Property, PM);
+ }
+}
//===----------------------------------------------------------------------===//
// ObjCCategoryDecl