1 files changed, 5 insertions, 2 deletions
diff --git a/clang/lib/Basic/Module.cpp b/clang/lib/Basic/Module.cpp
index ba3526c..03f9bd3 100644
--- a/clang/lib/Basic/Module.cpp
+++ b/clang/lib/Basic/Module.cpp
@@ -293,9 +293,12 @@ void Module::print(raw_ostream &OS, unsigned Indent) const {
     OS << "explicit ";
   OS << "module " << Name;
 
-  if (IsSystem) {
+  if (IsSystem || IsExternC) {
     OS.indent(Indent + 2);
-    OS << " [system]";
+    if (IsSystem)
+      OS << " [system]";
+    if (IsExternC)
+      OS << " [extern_c]";
   }
 
   OS << " {\n";