Index: testsuite/g++.dg/diagnostic/bitfld2.C
===================================================================
--- testsuite/g++.dg/diagnostic/bitfld2.C	(revision 0)
+++ testsuite/g++.dg/diagnostic/bitfld2.C	(revision 0)
@@ -0,0 +1,9 @@
+// PR c++/33840
+// { dg-do compile }
+
+template<int> struct A
+{
+  struct {} : 2;   // { dg-error "expected ';' after struct" }
+};
+// { dg-error "ISO C.. forbids declaration" "" { target *-*-* } 6 }
+// { dg-error "ISO C.. prohibits anonymous" "" { target *-*-* } 6 }