1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/template/union2.C b/gcc/testsuite/g++.dg/template/union2.C
new file mode 100644
index 000000000..25f1e086f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/union2.C
@@ -0,0 +1,12 @@
+/* PR c++/40557 */
+/* { dg-do compile } */
+
+struct A
+{
+  typedef int X;
+};
+
+template<int> union B
+{
+  A::X x;
+};