2 files changed, 2 insertions, 0 deletions
diff --git a/lib/Frontend/PCHReader.cpp b/lib/Frontend/PCHReader.cpp
index 55dbd978f1..4fcf026549 100644
--- a/lib/Frontend/PCHReader.cpp
+++ b/lib/Frontend/PCHReader.cpp
@@ -1702,6 +1702,7 @@ bool PCHReader::ParseLanguageOptions(
     PARSE_LANGOPT(Freestanding);
     PARSE_LANGOPT(NoBuiltin);
     PARSE_LANGOPT(ThreadsafeStatics);
+    PARSE_LANGOPT(POSIXThreads);
     PARSE_LANGOPT(Blocks);
     PARSE_LANGOPT(EmitAllDecls);
     PARSE_LANGOPT(MathErrno);
diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index c7ea8da087..4b8847c098 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -590,6 +590,7 @@ void PCHWriter::WriteLanguageOptions(const LangOptions &LangOpts) {
 
   // Whether static initializers are protected by locks.
   Record.push_back(LangOpts.ThreadsafeStatics);
+  Record.push_back(LangOpts.POSIXThreads);
   Record.push_back(LangOpts.Blocks); // block extension to C
   Record.push_back(LangOpts.EmitAllDecls); // Emit all declarations, even if
                                   // they are unused.