Method implemented in class's implementation may implement

one declared in class's extension and not one declared
in class's superclass. This supresses a bogus warning on
method type mismatch.
Fixes //rdar: // 8530080


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116118 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/Sema/SemaDeclObjC.cpp b/lib/Sema/SemaDeclObjC.cpp
index 09502a4923..74bd00340c 100644
--- a/lib/Sema/SemaDeclObjC.cpp
+++ b/lib/Sema/SemaDeclObjC.cpp
@@ -924,7 +924,16 @@ void Sema::MatchAllMethodDeclarations(const llvm::DenseSet<Selector> &InsMap,
       WarnConflictingTypedMethods(ImpMethodDecl, IntfMethodDecl);
     }
   }
+  
   if (ObjCInterfaceDecl *I = dyn_cast<ObjCInterfaceDecl> (CDecl)) {
+    // Also methods in class extensions need be looked at next.
+    for (const ObjCCategoryDecl *ClsExtDecl = I->getFirstClassExtension(); 
+         ClsExtDecl; ClsExtDecl = ClsExtDecl->getNextClassExtension())
+      MatchAllMethodDeclarations(InsMap, ClsMap, InsMapSeen, ClsMapSeen,
+                                 IMPDecl,
+                                 const_cast<ObjCCategoryDecl *>(ClsExtDecl), 
+                                 IncompleteImpl, false);
+    
     // Check for any implementation of a methods declared in protocol.
     for (ObjCInterfaceDecl::all_protocol_iterator
           PI = I->all_referenced_protocol_begin(),