c++: Add unfixed test [PR88003]

Now that dg-ice is available, let's try it out.

gcc/testsuite/ChangeLog:

	PR c++/88003
	* g++.dg/cpp1y/auto-fn61.C: New test.

diff --git a/gcc/testsuite/g++.dg/cpp1y/auto-fn61.C b/gcc/testsuite/g++.dg/cpp1y/auto-fn61.C
new file mode 100644 (file)
index 0000000..c24c3b8
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1y/auto-fn61.C
@@ -0,0 +1,13 @@
+// PR c++/88003
+// { dg-do compile { target c++14 } }
+// { dg-ice "poplevel_class" }
+
+auto test() {
+  struct O {
+    struct N;
+  };
+  return O();
+}
+
+typedef decltype(test()) TN;
+struct TN::N {};