Index: clang/include/clang/Basic/CodeGenOptions.def
--- clang/include/clang/Basic/CodeGenOptions.def.orig
+++ clang/include/clang/Basic/CodeGenOptions.def
@@ -357,6 +357,9 @@ 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 inlining to perform.
 ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NormalInlining)
 
