diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
@@ -1073,8 +1073,8 @@
       if (file.Write(expr_text, bytes_written).Success()) {
         if (bytes_written == expr_text_len) {
           file.Close();
-          if (auto fileEntry =
-                  m_compiler->getFileManager().getFile(result_path)) {
+          if (auto fileEntry = m_compiler->getFileManager().getOptionalFileRef(
+                  result_path)) {
             source_mgr.setMainFileID(source_mgr.createFileID(
                 *fileEntry,
                 SourceLocation(), SrcMgr::C_User));