1 files changed, 7 insertions, 4 deletions
diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index f3688aa7ee4..96f02110280 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -2365,11 +2365,14 @@ tooling::Replacements sortUsingDeclarations(const FormatStyle &Style,
 
 LangOptions getFormattingLangOpts(const FormatStyle &Style) {
   LangOptions LangOpts;
+  FormatStyle::LanguageStandard LexingStd =
+      Style.Standard == FormatStyle::LS_Auto ? FormatStyle::LS_Cpp11
+                                             : Style.Standard;
   LangOpts.CPlusPlus = 1;
-  LangOpts.CPlusPlus11 = Style.Standard >= FormatStyle::LS_Cpp11;
-  LangOpts.CPlusPlus14 = Style.Standard >= FormatStyle::LS_Cpp11;
-  LangOpts.CPlusPlus17 = Style.Standard >= FormatStyle::LS_Cpp11;
-  LangOpts.CPlusPlus2a = Style.Standard >= FormatStyle::LS_Cpp11;
+  LangOpts.CPlusPlus11 = LexingStd >= FormatStyle::LS_Cpp11;
+  LangOpts.CPlusPlus14 = LexingStd >= FormatStyle::LS_Cpp11;
+  LangOpts.CPlusPlus17 = LexingStd >= FormatStyle::LS_Cpp11;
+  LangOpts.CPlusPlus2a = LexingStd >= FormatStyle::LS_Cpp11;
   LangOpts.LineComment = 1;
   bool AlternativeOperators = Style.isCpp();
   LangOpts.CXXOperatorNames = AlternativeOperators ? 1 : 0;