1 files changed, 8 insertions, 0 deletions
diff --git a/lld/lib/Core/File.cpp b/lld/lib/Core/File.cpp
index 624fca9386d..dbac86b368a 100644
--- a/lld/lib/Core/File.cpp
+++ b/lld/lib/Core/File.cpp
@@ -9,6 +9,7 @@
 
 #include "lld/Core/File.h"
 #include "lld/Core/LLVM.h"
+#include <mutex>
 
 namespace lld {
 
@@ -19,4 +20,11 @@ File::atom_collection_empty<UndefinedAtom>     File::_noUndefinedAtoms;
 File::atom_collection_empty<SharedLibraryAtom> File::_noSharedLibraryAtoms;
 File::atom_collection_empty<AbsoluteAtom>      File::_noAbsoluteAtoms;
 
+std::error_code File::parse() {
+  std::lock_guard<std::mutex> lock(_parseMutex);
+  if (!_lastError.hasValue())
+    _lastError = doParse();
+  return _lastError.getValue();
+}
+
 } // namespace lld