diff --git a/clang/unittests/Lex/LexerTest.cpp b/clang/unittests/Lex/LexerTest.cpp
index 4bb3553..a887c22 100644
--- a/clang/unittests/Lex/LexerTest.cpp
+++ b/clang/unittests/Lex/LexerTest.cpp
@@ -402,7 +402,9 @@
       ArgTokens.push_back(tok);
   }
 
-  MacroArgs *MA = MacroArgs::create(MI, ArgTokens, false, *PP);
+  auto MacroArgsDeleter = [&PP](MacroArgs *M) { M->destroy(*PP); };
+  std::unique_ptr<MacroArgs, decltype(MacroArgsDeleter)> MA(
+      MacroArgs::create(MI, ArgTokens, false, *PP), MacroArgsDeleter);
   Token Result = MA->getStringifiedArgument(0, *PP, {}, {});
   EXPECT_EQ(tok::string_literal, Result.getKind());
   EXPECT_STREQ("\"\\\"StrArg\\\"\"", Result.getLiteralData());