1 files changed, 1 insertions, 1 deletions
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index 4898d6f2fc..5a1edbd0e6 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -1001,7 +1001,7 @@ bool FunctionDecl::isExternC() const {
       break;
   }
 
-  return false;
+  return isMain();
 }
 
 bool FunctionDecl::isGlobal() const {