1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/gdc.test/fail_compilation/test21204.d b/gcc/testsuite/gdc.test/fail_compilation/test21204.d
new file mode 100644
index 00000000000..8732cc09c23
--- /dev/null
+++ b/gcc/testsuite/gdc.test/fail_compilation/test21204.d
@@ -0,0 +1,23 @@
+// https://issues.dlang.org/show_bug.cgi?id=21204
+/*
+TEST_OUTPUT:
+---
+fail_compilation/test21204.d(22): Error: Generating an `inout` copy constructor for `struct test21204.B` failed, therefore instances of it are uncopyable
+---
+*/
+
+struct A
+{
+    this(ref A other) {}
+}
+
+struct B
+{
+    A a;
+}
+
+void example()
+{
+    B b1;
+    B b2 = b1;
+}