re PR c++/35297 (Compiling error with variadic template with fixed parameter with default type.)

        PR c++/35297
        PR c++/35477
        PR c++/35784
        PR c++/36846
        PR c++/38276
        * pt.c (check_default_tmpl_args): Don't complain about
        out-of-order parameter packs in the enclosing class
        or parameter packs after default args.
        (coerce_template_parms): If we have more than one
        parameter pack, don't flatten argument packs.
        (template_args_equal): Handle argument packs.
        (comp_template_args): Don't flatten argument packs.
        (check_instantiated_arg): Split out from...
        (check_instantiated_args): Here.  Handle arg packs.
        (convert_template_argument): Just check that nontype argument
        packs have the right type.

From-SVN: r143166

gcc/cp/ChangeLog

+2009-01-06  Jason Merrill  <jason@redhat.com>
+
+	PR c++/35297
+	PR c++/35477
+	PR c++/35784
+	PR c++/36846
+	PR c++/38276
+	* pt.c (check_default_tmpl_args): Don't complain about
+	out-of-order parameter packs in the enclosing class
+	or parameter packs after default args.
+	(coerce_template_parms): If we have more than one
+	parameter pack, don't flatten argument packs.
+	(template_args_equal): Handle argument packs.
+	(comp_template_args): Don't flatten argument packs.
+	(check_instantiated_arg): Split out from...
+	(check_instantiated_args): Here.  Handle arg packs.
+	(convert_template_argument): Just check that nontype argument
+	packs have the right type.
+
 2009-01-05  Dodji Seketeli  <dodji@redhat.com>
 
 	PR c++/38472

gcc/testsuite/ChangeLog

+2009-01-07  Jason Merrill  <jason@redhat.com>
+
+	* g++.dg/cpp0x/variadic92.C: New test.
+	* g++.dg/cpp0x/variadic93.C: New test.
+
 2009-01-07  Janis Johnson  <janis187@us.ibm.com>
 
 	* lib/target-supports-dg.exp (current_compiler_flags): New.

gcc/testsuite/g++.dg/cpp0x/variadic65.C

@@ -5,4 +5,4 @@ template<typename T1 = unused, typename T2 = unused, typename T3 = unused,
 struct tuple {};
 
 template<typename... Args>
-void foo(tuple<Args...>) { } // { dg-error "cannot expand" }
+void foo(tuple<Args...>) { } // { dg-bogus "cannot expand" "" { xfail *-*-* } }

gcc/testsuite/g++.dg/cpp0x/variadic82.C

@@ -3,9 +3,9 @@
 
 template<typename> struct A;
 
-template<typename... T> struct A<T*...> // { dg-error "cannot expand" }
+template<typename... T> struct A<T*...> // { dg-bogus "cannot expand" "" { xfail *-*-* } }
 {
   struct B;
 };
 
-A<void*> a; // { dg-error "incomplete type" }
+A<void*> a; // { dg-bogus "incomplete type" "" { xfail *-*-* } }

gcc/testsuite/g++.dg/cpp0x/variadic83.C

@@ -3,6 +3,6 @@
 
 template<typename> struct A;
 
-template<typename... T> struct A<T...> { }; // { dg-error "cannot expand" }
+template<typename... T> struct A<T...> { }; // { dg-bogus "cannot expand" "" { xfail *-*-* } }
 
-A<int> a; // { dg-error "incomplete type" }
+A<int> a; // { dg-bogus "incomplete type" "" { xfail *-*-* } }

gcc/testsuite/g++.dg/cpp0x/variadic92.C

+// Various tests for variadic templates and partial specialization.
+// { dg-options "-std=c++0x" }
+
+// PR c++/36846
+template<typename A, typename B>
+struct pair;
+
+template<typename... T>
+struct pairs;
+
+template<typename... AS, typename... BS>
+struct pairs<pair<AS, BS>...> {
+  struct mismatched_packs {};
+};
+
+template class pairs<
+  pair<int, int>,
+  pair<int, int>
+>;
+
+template<int A, int B>
+struct point;
+
+template<typename... T>
+struct points;
+
+template<int... AS, int... BS>
+struct points<point<AS, BS>...> {
+  struct mismatched_packs {};
+};
+
+template class points<
+  point<0, 1>,
+  point<0, 1>
+>;
+
+// PR c++/35477
+template <class...ARGS> struct tuple {};
+template <class A, class B> struct test {};
+template <class... ARGS, class B> struct test<B, tuple<ARGS...>>
+{
+    template <class T> struct inside {};
+};
+
+// PR c++/38276
+template<typename...> struct A;
+
+template<typename, typename> struct B;
+
+template<typename... T, typename... U> struct B<A<T...>, A<U...> >
+{
+  static int i;
+};
+
+B<A<>, A<int> > b1;
+
+B<A<int>, A<> > b2;
+
+// PR c++/35784
+template <typename...> struct p;
+
+template <typename, typename> struct d;
+
+template <typename... A, typename... B>
+struct d<p<A...>, p<B...> > { typedef int t; };
+
+typedef d<p<>, p<int, float> >::t q;
+typedef d<q, d<p<int>, p<float> >::t> r; // *
+
+typedef d<d<p<>, p<int, float> >::t, d<p<>, p<> >::t> s;

gcc/testsuite/g++.dg/cpp0x/variadic93.C

+// PR c++/35297
+// { dg-options "-std=c++0x" }
+
+template <class T=int, class... ARGS> 
+struct test2 {};
+
+int main()
+{
+        test2<> a;
+        return 0;
+}