1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/init/synth3.C b/gcc/testsuite/g++.dg/init/synth3.C
new file mode 100644
index 000000000..d656ddb2e
--- /dev/null
+++ b/gcc/testsuite/g++.dg/init/synth3.C
@@ -0,0 +1,21 @@
+// Test that synthesizing the C copy constructor doesn't require B<int> to
+// be complete.
+
+template <class T>
+struct B
+{
+  typename T::NT nt;
+};
+
+struct A
+{
+  A ();
+  A (const A&);
+  A (const B<int>&);
+};
+
+struct C: A { };
+
+C c;
+C c2(c);
+