1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/template/instantiate1.C b/gcc/testsuite/g++.dg/template/instantiate1.C
new file mode 100644
index 000000000..828f2e9c5
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/instantiate1.C
@@ -0,0 +1,21 @@
+// { dg-do compile }
+// Origin:
+
+// PR c++/6716
+// ICE in complex class structure when components are incomplete
+
+template <class T> struct X {
+  T t;				// { dg-error "incomplete" }
+};
+
+template <class T> struct Y {
+  X<T> x;			// { dg-message "instantiated" }
+};
+
+template <class T> struct Z {	// { dg-error "declaration" }
+  Y<Z<T> > y;			// { dg-message "instantiated" }
+};
+
+struct ZZ : Z<int>
+{
+};