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-rw-r--r--lib/AST/Decl.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index 31a9b3b292..479f80f1dd 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -938,6 +938,12 @@ bool NamedDecl::declarationReplaces(NamedDecl *OldD) const {
cast<UsingDecl>(OldD)->getQualifier());
}
+ // A typedef of an Objective-C class type can replace an Objective-C class
+ // declaration or definition, and vice versa.
+ if ((isa<TypedefNameDecl>(this) && isa<ObjCInterfaceDecl>(OldD)) ||
+ (isa<ObjCInterfaceDecl>(this) && isa<TypedefNameDecl>(OldD)))
+ return true;
+
// For non-function declarations, if the declarations are of the
// same kind then this must be a redeclaration, or semantic analysis
// would not have given us the new declaration.