// { dg-do assemble  }// Distillation of crash1.C problem (PR 3633)template<class P>class A{  P p;};template<class Q>class B{  A<Q> a;			// bogus error - temp parm name propagating};template<class R>class C{  B<R> b;};template<class S>class D{  S s;};C< D<int> > c;