gcc/testsuite/g++.dg/template/explicit6.C

// Copyright (C) 2005 Free Software Foundation, Inc.
// Contributed by Nathan Sidwell 14 Feb 2005 <nathan@codesourcery.com>

// Origin: Volker Reichelt <reichelt@gcc.gnu.org>
// Bug 19895: ICE on invalid

struct A;
template A<>::A(); // { dg-error "(should have been)|(not a template)" }