diff --git a/llvm/unittests/ExecutionEngine/MCJIT/MCJITMultipleModuleTest.cpp b/llvm/unittests/ExecutionEngine/MCJIT/MCJITMultipleModuleTest.cpp
index 4d650e8..cea6274 100644
--- a/llvm/unittests/ExecutionEngine/MCJIT/MCJITMultipleModuleTest.cpp
+++ b/llvm/unittests/ExecutionEngine/MCJIT/MCJITMultipleModuleTest.cpp
@@ -18,7 +18,13 @@
 
 using namespace llvm;
 
-class MCJITMultipleModuleTest : public testing::Test, public MCJITTestBase {};
+class MCJITMultipleModuleTest : public testing::Test, public MCJITTestBase {
+public:
+  virtual ~MCJITMultipleModuleTest();
+};
+
+// Provide out-of-line definition to prevent weak vtable.
+MCJITMultipleModuleTest::~MCJITMultipleModuleTest() {}
 
 namespace {