1 files changed, 4 insertions, 2 deletions
diff --git a/clang/lib/Basic/Targets/PNaCl.cpp b/clang/lib/Basic/Targets/PNaCl.cpp
index 60e9467193a8..51b6452b0c20 100644
--- a/clang/lib/Basic/Targets/PNaCl.cpp
+++ b/clang/lib/Basic/Targets/PNaCl.cpp
@@ -16,10 +16,12 @@
 using namespace clang;
 using namespace clang::targets;
 
-ArrayRef<const char *> PNaClTargetInfo::getGCCRegNames() const { return None; }
+ArrayRef<const char *> PNaClTargetInfo::getGCCRegNames() const {
+  return std::nullopt;
+}
 
 ArrayRef<TargetInfo::GCCRegAlias> PNaClTargetInfo::getGCCRegAliases() const {
-  return None;
+  return std::nullopt;
 }
 
 void PNaClTargetInfo::getArchDefines(const LangOptions &Opts,