diff --git a/src/third_party/llvm-project/clang/test/CodeGenCXX/template-anonymous-union-member-initializer.cpp b/src/third_party/llvm-project/clang/test/CodeGenCXX/template-anonymous-union-member-initializer.cpp
new file mode 100644
index 0000000..41ae084
--- /dev/null
+++ b/src/third_party/llvm-project/clang/test/CodeGenCXX/template-anonymous-union-member-initializer.cpp
@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -emit-llvm -o %t %s
+template <typename T>
+class A
+{
+    union { void *d; };
+
+public:
+    A() : d(0) { }
+};
+
+A<int> a0;