Really protect from infinite loop when there are objc method redeclarations.

Serialization part will come later.

llvm-svn: 141950

1 files changed, 12 insertions, 0 deletions

diff --git a/clang/lib/AST/DeclObjC.cpp b/clang/lib/AST/DeclObjC.cpp
index 7c1332ab103..170cdf43fc4 100644
--- a/clang/lib/AST/DeclObjC.cpp
+++ b/clang/lib/AST/DeclObjC.cpp
@@ -351,6 +351,12 @@ ObjCMethodDecl *ObjCMethodDecl::Create(ASTContext &C,
                                 HasRelatedResultType);
 }
 
+void ObjCMethodDecl::setAsRedeclaration(const ObjCMethodDecl *PrevMethod) {
+  assert(PrevMethod);
+  getASTContext().setObjCMethodRedeclaration(PrevMethod, this);
+  IsRedeclaration = true;
+}
+
 void ObjCMethodDecl::setParamsAndSelLocs(ASTContext &C,
                                          ArrayRef<ParmVarDecl*> Params,
                                          ArrayRef<SourceLocation> SelLocs) {
@@ -418,6 +424,12 @@ ObjCMethodDecl *ObjCMethodDecl::getNextRedeclaration() {
       Redecl = CatD->getMethod(getSelector(), isInstanceMethod());
   }
 
+  if (!Redecl && isRedeclaration()) {
+    // This is the last redeclaration, go back to the first method.
+    return cast<ObjCContainerDecl>(CtxD)->getMethod(getSelector(),
+                                                    isInstanceMethod());
+  }
+
   return Redecl ? Redecl : this;
 }