1 files changed, 9 insertions, 0 deletions
diff --git a/clang/lib/Basic/VirtualFileSystem.cpp b/clang/lib/Basic/VirtualFileSystem.cpp
index 1727b7d..b2eb5b9 100644
--- a/clang/lib/Basic/VirtualFileSystem.cpp
+++ b/clang/lib/Basic/VirtualFileSystem.cpp
@@ -381,6 +381,15 @@ OverlayFileSystem::setCurrentWorkingDirectory(const Twine &Path) {
   return {};
 }
 
+std::error_code
+OverlayFileSystem::getRealPath(const Twine &Path,
+                               SmallVectorImpl<char> &Output) const {
+  for (auto &FS : FSList)
+    if (FS->exists(Path))
+      return FS->getRealPath(Path, Output);
+  return errc::no_such_file_or_directory;
+}
+
 clang::vfs::detail::DirIterImpl::~DirIterImpl() = default;
 
 namespace {