Index: clang/include/clang/Basic/CodeGenOptions.def
--- clang/include/clang/Basic/CodeGenOptions.def.orig
+++ clang/include/clang/Basic/CodeGenOptions.def
@@ -393,6 +393,9 @@ VALUE_CODEGENOPT(SmallDataLimit, 32, 0)
 /// The lower bound for a buffer to be considered for stack protection.
 VALUE_CODEGENOPT(SSPBufferSize, 32, 0)
 
+/// Whether to use return protectors
+CODEGENOPT(ReturnProtector, 1, 0)
+
 /// The kind of generated debug info.
 ENUM_CODEGENOPT(DebugInfo, llvm::codegenoptions::DebugInfoKind, 4, llvm::codegenoptions::NoDebugInfo)
 
