re PR c++/20669 (Template candidates not listed in error message.)

PR c++/20669
	* call.c (add_template_candidate_real): If deduction fails, still
	add the template as a non-viable candidate.
	(equal_functions): Handle template candidates.
	(print_z_candidate): Likewise.
	(print_z_candidates): Likewise.
	(build_new_function_call): Likewise.

From-SVN: r159335

gcc/cp/ChangeLog

@@ -1,5 +1,13 @@
 2010-05-12  Jason Merrill  <jason@redhat.com>
 
+	PR c++/20669
+	* call.c (add_template_candidate_real): If deduction fails, still
+	add the template as a non-viable candidate.
+	(equal_functions): Handle template candidates.
+	(print_z_candidate): Likewise.
+	(print_z_candidates): Likewise.
+	(build_new_function_call): Likewise.
+
 	* cp-tree.h (LOOKUP_LIST_ONLY): New.
 	* call.c (add_candidates): Enforce it.
 	(build_new_method_call): Try non-list ctor if no viable list ctor.

gcc/cp/call.c

@@ -2508,11 +2508,11 @@ add_template_candidate_real (struct z_candidate **candidates, tree tmpl,
 			   return_type, strict, flags);
 
   if (i != 0)
-    return NULL;
+    goto fail;
 
   fn = instantiate_template (tmpl, targs, tf_none);
   if (fn == error_mark_node)
-    return NULL;
+    goto fail;
 
   /* In [class.copy]:
 
@@ -2541,7 +2541,7 @@ add_template_candidate_real (struct z_candidate **candidates, tree tmpl,
       tree arg_types = FUNCTION_FIRST_USER_PARMTYPE (fn);
       if (arg_types && same_type_p (TYPE_MAIN_VARIANT (TREE_VALUE (arg_types)),
 				    ctype))
-	return NULL;
+	goto fail;
     }
 
   if (obj != NULL_TREE)
@@ -2575,6 +2575,9 @@ add_template_candidate_real (struct z_candidate **candidates, tree tmpl,
     cand->template_decl = DECL_TEMPLATE_INFO (fn);
 
   return cand;
+ fail:
+  return add_candidate (candidates, tmpl, first_arg, arglist, nargs, NULL,
+			access_path, conversion_path, 0);
 }
 
 
@@ -2607,10 +2610,10 @@ add_template_conv_candidate (struct z_candidate **candidates, tree tmpl,
 }
 
 /* The CANDS are the set of candidates that were considered for
-   overload resolution.  Return the set of viable candidates.  If none
+   overload resolution.  Return the set of viable candidates, or CANDS
-   of the candidates were viable, set *ANY_VIABLE_P to true.  STRICT_P
+   if none are viable.  If any of the candidates were viable, set
-   is true if a candidate should be considered viable only if it is
+   *ANY_VIABLE_P to true.  STRICT_P is true if a candidate should be
-   strictly viable.  */
+   considered viable only if it is strictly viable.  */
 
 static struct z_candidate*
 splice_viable (struct z_candidate *cands,
@@ -2675,6 +2678,10 @@ build_this (tree obj)
 static inline int
 equal_functions (tree fn1, tree fn2)
 {
+  if (TREE_CODE (fn1) != TREE_CODE (fn2))
+    return 0;
+  if (TREE_CODE (fn1) == TEMPLATE_DECL)
+    return fn1 == fn2;
   if (DECL_LOCAL_FUNCTION_P (fn1) || DECL_LOCAL_FUNCTION_P (fn2)
       || DECL_EXTERN_C_FUNCTION_P (fn1))
     return decls_match (fn1, fn2);
@@ -2710,7 +2717,7 @@ print_z_candidate (const char *msgstr, struct z_candidate *candidate)
     inform (input_location, "%s %T <conversion>", msgstr, candidate->fn);
   else if (candidate->viable == -1)
     inform (input_location, "%s %+#D <near match>", msgstr, candidate->fn);
-  else if (DECL_DELETED_FN (candidate->fn))
+  else if (DECL_DELETED_FN (STRIP_TEMPLATE (candidate->fn)))
     inform (input_location, "%s %+#D <deleted>", msgstr, candidate->fn);
   else
     inform (input_location, "%s %+#D", msgstr, candidate->fn);
@@ -2750,12 +2757,12 @@ print_z_candidates (struct z_candidate *candidates)
     {
       tree fn = cand1->fn;
       /* Skip builtin candidates and conversion functions.  */
-      if (TREE_CODE (fn) != FUNCTION_DECL)
+      if (!DECL_P (fn))
 	continue;
       cand2 = &cand1->next;
       while (*cand2)
 	{
-	  if (TREE_CODE ((*cand2)->fn) == FUNCTION_DECL
+	  if (DECL_P ((*cand2)->fn)
 	      && equal_functions (fn, (*cand2)->fn))
 	    *cand2 = (*cand2)->next;
 	  else
@@ -3167,7 +3174,8 @@ build_new_function_call (tree fn, VEC(tree,gc) **args, bool koenig_p,
     {
       if (complain & tf_error)
 	{
-	  if (!any_viable_p && candidates && ! candidates->next)
+	  if (!any_viable_p && candidates && ! candidates->next
+	      && (TREE_CODE (candidates->fn) == FUNCTION_DECL))
 	    return cp_build_function_call_vec (candidates->fn, args, complain);
 	  if (TREE_CODE (fn) == TEMPLATE_ID_EXPR)
 	    fn = TREE_OPERAND (fn, 0);

gcc/testsuite/ChangeLog

@@ -1,5 +1,69 @@
 2010-05-12  Jason Merrill  <jason@redhat.com>
 
+	* g++.dg/conversion/op1.C: Expect template candidate message.
+	* g++.dg/cpp0x/nullptr15.C: Likewise.
+	* g++.dg/cpp0x/pr31431-2.C: Likewise.
+	* g++.dg/cpp0x/pr31431.C: Likewise.
+	* g++.dg/cpp0x/temp_default2.C: Likewise.
+	* g++.dg/cpp0x/trailing4.C: Likewise.
+	* g++.dg/cpp0x/variadic-ex3.C: Likewise.
+	* g++.dg/cpp0x/variadic-ex4.C: Likewise.
+	* g++.dg/cpp0x/variadic-throw.C: Likewise.
+	* g++.dg/cpp0x/variadic35.C: Likewise.
+	* g++.dg/cpp0x/vt-35147.C: Likewise.
+	* g++.dg/cpp0x/vt-37737-1.C: Likewise.
+	* g++.dg/cpp0x/vt-37737-2.C: Likewise.
+	* g++.dg/ext/visibility/anon8.C: Likewise.
+	* g++.dg/ext/vla2.C: Likewise.
+	* g++.dg/other/pr28114.C: Likewise.
+	* g++.dg/other/ptrmem10.C: Likewise.
+	* g++.dg/other/ptrmem11.C: Likewise.
+	* g++.dg/overload/unknown1.C: Likewise.
+	* g++.dg/parse/template7.C: Likewise.
+	* g++.dg/parse/typename7.C: Likewise.
+	* g++.dg/template/conv11.C: Likewise.
+	* g++.dg/template/copy1.C: Likewise.
+	* g++.dg/template/deduce3.C: Likewise.
+	* g++.dg/template/dependent-expr5.C: Likewise.
+	* g++.dg/template/friend.C: Likewise.
+	* g++.dg/template/incomplete2.C: Likewise.
+	* g++.dg/template/local4.C: Likewise.
+	* g++.dg/template/local6.C: Likewise.
+	* g++.dg/template/operator10.C: Likewise.
+	* g++.dg/template/overload6.C: Likewise.
+	* g++.dg/template/ptrmem2.C: Likewise.
+	* g++.dg/template/ptrmem20.C: Likewise.
+	* g++.dg/template/ptrmem8.C: Likewise.
+	* g++.dg/template/sfinae2.C: Likewise.
+	* g++.dg/template/ttp25.C: Likewise.
+	* g++.dg/template/unify10.C: Likewise.
+	* g++.dg/template/unify11.C: Likewise.
+	* g++.dg/template/unify6.C: Likewise.
+	* g++.dg/template/unify7.C: Likewise.
+	* g++.dg/template/unify9.C: Likewise.
+	* g++.dg/template/varmod1.C: Likewise.
+	* g++.old-deja/g++.brendan/crash56.C: Likewise.
+	* g++.old-deja/g++.law/operators32.C: Likewise.
+	* g++.old-deja/g++.pt/crash28.C: Likewise.
+	* g++.old-deja/g++.pt/crash60.C: Likewise.
+	* g++.old-deja/g++.pt/explicit38.C: Likewise.
+	* g++.old-deja/g++.pt/explicit39.C: Likewise.
+	* g++.old-deja/g++.pt/explicit41.C: Likewise.
+	* g++.old-deja/g++.pt/explicit67.C: Likewise.
+	* g++.old-deja/g++.pt/explicit77.C: Likewise.
+	* g++.old-deja/g++.pt/expr2.C: Likewise.
+	* g++.old-deja/g++.pt/overload7.C: Likewise.
+	* g++.old-deja/g++.pt/ptrmem6.C: Likewise.
+	* g++.old-deja/g++.pt/spec5.C: Likewise.
+	* g++.old-deja/g++.pt/spec6.C: Likewise.
+	* g++.old-deja/g++.pt/t24.C: Likewise.
+	* g++.old-deja/g++.pt/unify4.C: Likewise.
+	* g++.old-deja/g++.pt/unify6.C: Likewise.
+	* g++.old-deja/g++.pt/unify8.C: Likewise.
+	* g++.old-deja/g++.robertl/eb119.C: Likewise.
+	* g++.old-deja/g++.robertl/eb79.C: Likewise.
+	* g++.old-deja/g++.robertl/eb98.C: Likewise.
+
 	* g++.dg/cpp0x/initlist32.C: New.
 
 	* g++.dg/template/conv11.C: New.

gcc/testsuite/g++.dg/conversion/op1.C

@@ -1,7 +1,7 @@
 class C
 {
   template<typename U> 
-  operator U();
+  operator U();			// { dg-message "candidate" }
 };
 
 int fn (C c) 

gcc/testsuite/g++.dg/cpp0x/nullptr15.C

@@ -10,7 +10,7 @@ template <typename T, typename U>
 inline typename tType_equal<T, U>::type
 type_equal(U) { }
 
-template<typename T> T* g( T* t );
+template<typename T> T* g( T* t ); // { dg-message "candidate" }
 
 void test_g()
 {

gcc/testsuite/g++.dg/cpp0x/pr31431-2.C

@@ -1,5 +1,5 @@
 // { dg-options "-std=gnu++0x" }
-template<typename, typename..., typename> void foo();
+template<typename, typename..., typename> void foo(); // { dg-message "candidate" }
 
 void bar()
 {

gcc/testsuite/g++.dg/cpp0x/pr31431.C

@@ -1,5 +1,5 @@
 // { dg-options "-std=gnu++0x" }
-template<typename..., typename> void foo();
+template<typename..., typename> void foo(); // { dg-message "candidate" }
 
 void bar()
 {

gcc/testsuite/g++.dg/cpp0x/temp_default2.C

@@ -1,7 +1,7 @@
 // { dg-options "-std=c++0x" }
 
 template <class T, class U = double> 
-void f(T t = 0, U u = 0); 
+void f(T t = 0, U u = 0); 	// { dg-message "candidate" }
 
 void g() 
 { 

gcc/testsuite/g++.dg/cpp0x/trailing4.C

@@ -5,7 +5,7 @@ template<class T, class U>
 auto f(T,U) -> decltype(T() + U())
 { return T() + U(); }
 
-template<class T> void g(T){}
+template<class T> void g(T){}	// { dg-message "candidate" }
 
 int main() { g(f); }		// { dg-error "no matching function" }
 

gcc/testsuite/g++.dg/cpp0x/variadic-ex3.C

@@ -1,5 +1,5 @@
 // { dg-options "-std=gnu++0x" }
-template<class X, class Y, class... Z> X f(Y); 
+template<class X, class Y, class... Z> X f(Y); // { dg-message "candidate" }
 void g() 
 { 
   int i = f<int>(5.6);

gcc/testsuite/g++.dg/cpp0x/variadic-ex4.C

@@ -1,5 +1,5 @@
 // { dg-options "-std=gnu++0x" }
-template<class X, class Y, class Z> X f(Y,Z); 
+template<class X, class Y, class Z> X f(Y,Z); // { dg-message "candidate" }
 template<class... Args> void f2();
 void g() 
 { 

gcc/testsuite/g++.dg/cpp0x/variadic-throw.C

@@ -1,4 +1,5 @@
 // { dg-options -std=c++0x }
+// { dg-prune-output "note" }
 // PR c++/33509
 template<int M, int N> struct pair
 {

gcc/testsuite/g++.dg/cpp0x/variadic35.C

@@ -1,6 +1,6 @@
 // { dg-options "-std=gnu++0x" }
 template<int I, typename... Args>
-void get_ith(const Args&... args);
+void get_ith(const Args&... args); // { dg-message "candidate" }
 
 void f()
 {

gcc/testsuite/g++.dg/cpp0x/vt-35147.C

@@ -1,7 +1,7 @@
 // { dg-options "-std=c++0x" }
 
 template<typename _Tp>
-  _Tp&& forward(_Tp&& __t) { return __t; }
+  _Tp&& forward(_Tp&& __t) { return __t; } // { dg-message "candidate" }
 
 void f(...);
 

gcc/testsuite/g++.dg/cpp0x/vt-37737-1.C

@@ -1,4 +1,5 @@
 // { dg-options "-std=c++0x" }
+// { dg-prune-output "note" }
 
 void f() { }
 

gcc/testsuite/g++.dg/cpp0x/vt-37737-2.C

@@ -1,7 +1,7 @@
 // { dg-options "-std=c++0x" }
 
 template<class U, class... T>
-void f()
+void f()			// { dg-message "candidate" }
 {
   f<T...>(); // { dg-error "no matching" }
 }

gcc/testsuite/g++.dg/ext/visibility/anon8.C

@@ -2,7 +2,7 @@
 // { dg-do compile }
 
 template <void (*fn) ()>
-void call ()
+void call ()			// { dg-message "candidate" }
 {
   fn ();
 }

gcc/testsuite/g++.dg/ext/vla2.C

@@ -8,7 +8,7 @@
 // errors.
 
 template <unsigned int N>
-char* begin(char (&a) [N] );
+char* begin(char (&a) [N] );	// { dg-message "candidate" }
 
 void bar(int i)
 {

gcc/testsuite/g++.dg/other/pr28114.C

@@ -1,7 +1,7 @@
 
 // Test to make sure we do not ICE on this invalid program.
 
-template<int> void foo(struct {}*); // { dg-error "" }
+template<int> void foo(struct {}*); // { dg-message "" }
 
 void bar()
 {

gcc/testsuite/g++.dg/other/ptrmem10.C

@@ -3,7 +3,7 @@
 
 template <class C, void (C::*M) ()>
 static
-void foo(void *obj)
+void foo(void *obj)		// { dg-message "candidate" }
 {
   C *p = static_cast<C*>(obj);
   (p->*M)();

gcc/testsuite/g++.dg/other/ptrmem11.C

@@ -5,7 +5,7 @@ struct A {};
 
 template <int A::* p>
 int
-foo(A* q)
+foo(A* q)			// { dg-message "candidate" }
 {
   return q->*p;
 }

gcc/testsuite/g++.dg/overload/unknown1.C

@@ -2,7 +2,7 @@
 
 void foo(void);
 int foo(int);
-template <typename T> void bar(T f);
+template <typename T> void bar(T f); // { dg-message "candidate" }
 
 void baz() {
   bar(foo); // { dg-error "<unresolved overloaded function type>" }

gcc/testsuite/g++.dg/parse/template7.C

@@ -1,4 +1,4 @@
 template <int I>
-void f();
+void f();			// { dg-message "candidate" }
 
 void g() { f<(3, 2)>(); } // { dg-error "" }

gcc/testsuite/g++.dg/parse/typename7.C

@@ -7,8 +7,8 @@
 
 struct A
 {
-  template<typename>   void foo(int);
+  template<typename>   void foo(int); // { dg-message "candidate" }
-  template<typename T> void bar(T t) {
+  template<typename T> void bar(T t) { // { dg-message "candidate" }
     this->foo<typename T>(t); } // { dg-error "expected|parse error|no matching" }
   template<typename T> void bad(T t) {
     foo<typename T>(t); } // { dg-error "expected|parse error|no matching" }

gcc/testsuite/g++.dg/template/conv11.C

@@ -1,7 +1,7 @@
 int i;
 struct A
 {
-  template <class T> operator T&() { return i; }
+  template <class T> operator T&() { return i; } // { dg-message "candidate" }
 };
 
 int main()

gcc/testsuite/g++.dg/template/copy1.C

@@ -6,8 +6,8 @@
 
 struct A
 {
-  A(A&); // { dg-message "candidate" }
+  A(A&); // { dg-message "note" }
-  template <class T> A(T); 
+  template <class T> A(T); 	// { dg-message "candidate" }
 };
 
 A a = 0; // { dg-error "no matching function" }

gcc/testsuite/g++.dg/template/deduce3.C

@@ -1,5 +1,5 @@
 template <typename T>
-void f(int, T (*)() = 0);
+void f(int, T (*)() = 0);	// { dg-message "candidate" }
 
 void g() {
   typedef int A[2];

gcc/testsuite/g++.dg/template/dependent-expr5.C

@@ -4,9 +4,9 @@
 // contributed by Alexandre Oliva <aoliva@redhat.com>
 // inspired in the failure reported in Red Hat bugzilla #168260.
 
-template<class F> void bind(F f) {}
+template<class F> void bind(F f) {} // { dg-message "note" }
 
-template<class F> void bindm(F f) {}
+template<class F> void bindm(F f) {} // { dg-message "note" }
 template<class F, class T> void bindm(F (T::*f)(void)) {} // { dg-message "note" }
 
 template<class F> void bindn(F f) {}

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

@@ -7,7 +7,7 @@ extern ostream& cout;
 template <class T> struct s;
 
 template <class T>
-ostream& operator<<(ostream &o, const typename s<T>::t &x)
+ostream& operator<<(ostream &o, const typename s<T>::t &x) // { dg-message "note" }
 {
   return o;
 }

gcc/testsuite/g++.dg/template/incomplete2.C

@@ -3,7 +3,7 @@
 
 struct A;
 
-template<A&> void foo();
+template<A&> void foo();	// { dg-message "candidate" }
 
 A a;  // { dg-error "incomplete type" }
 

gcc/testsuite/g++.dg/template/local4.C

@@ -1,6 +1,6 @@
 // PR c++/17413
 
-template <typename T> void foo() {}
+template <typename T> void foo() {} // { dg-message "candidate" }
 
 int main () {
   struct S {};

gcc/testsuite/g++.dg/template/local6.C

@@ -1,6 +1,6 @@
-template <class T> struct PCVector2 // { dg-message "candidate is" }
+template <class T> struct PCVector2 // { dg-message "note" }
 {
-    template <class T2> PCVector2(const PCVector2<T> &cv) ;
+    template <class T2> PCVector2(const PCVector2<T> &cv) ; // { dg-message "candidate" }
 
     PCVector2<T> operator- (const PCVector2<T> &ov) const 
 	{ 

gcc/testsuite/g++.dg/template/operator10.C

@@ -1,4 +1,5 @@
 // PR c++/30535
+// { dg-prune-output "note" }
 
 struct A {};
 

gcc/testsuite/g++.dg/template/overload6.C

@@ -4,7 +4,7 @@
 // PR 21592:ICE
 // Origin:  Volker Reichelt <reichelt@gcc.gnu.org>
 
-template<typename T> void unique(T,T);
+template<typename T> void unique(T,T); // { dg-message "note" }
 
 struct A
 {

gcc/testsuite/g++.dg/template/ptrmem2.C

@@ -7,7 +7,7 @@
 
 struct A {};
 
-template <typename T> T A::* Foo ();
+template <typename T> T A::* Foo (); // { dg-message "candidate" }
 
 void Baz ()
 {

gcc/testsuite/g++.dg/template/ptrmem20.C

@@ -8,7 +8,7 @@ struct B
   void foo();
 };
 
-template<void (A::*)()> void bar();
+template<void (A::*)()> void bar(); // { dg-message "candidate" }
 
 void baz()
 {

gcc/testsuite/g++.dg/template/ptrmem8.C

@@ -11,7 +11,7 @@ struct B
 
 struct D : B {};
 
-template <int (D::*fun)() const> int Get();
+template <int (D::*fun)() const> int Get(); // { dg-message "candidate" }
 
 int main () 
 {

gcc/testsuite/g++.dg/template/sfinae2.C

@@ -8,7 +8,7 @@ template<int T> struct cl {
   const static int value = T;
 };
 
-template<int I> void fn (char (*) [cl<I>::value] = 0 );
+template<int I> void fn (char (*) [cl<I>::value] = 0 ); // { dg-message "candidate" }
 
 void foo (void)
 {

gcc/testsuite/g++.dg/template/ttp25.C

@@ -1,19 +1,19 @@
 // { dg-do compile }
 template<typename T, template<T> class C>
-void f1(T, C<5>);
+void f1(T, C<5>);		// { dg-message "note" }
 
 template<typename T, template<T> class C>
 void f2(C<5>, T);
 
 template<typename T, template<T> class C>
-void f3(C<5>, T);
+void f3(C<5>, T);		// { dg-message "note" }
 
 template<typename T> struct metafun { typedef T type; };
 
 template<> struct metafun<short> { typedef int type; };
 
 template<typename T, template<typename metafun<T>::type> class C>
-void f4(T, C<5>);
+void f4(T, C<5>);		// { dg-message "note" }
 
 template<int N> struct X {};
 void g() {

gcc/testsuite/g++.dg/template/unify10.C

@@ -12,16 +12,16 @@ struct MyClass {
 };
 
 template<class CLASS>
-void mFunction(void (CLASS::* method)()) {}
+void mFunction(void (CLASS::* method)()) {} // { dg-message "candidate" }
 
 template<class CLASS>
-void cFunction(void (CLASS::* method)() const) {}
+void cFunction(void (CLASS::* method)() const) {} // { dg-message "candidate" }
 
 template<class CLASS>
-void vFunction(void (CLASS::* method)() volatile) {}
+void vFunction(void (CLASS::* method)() volatile) {} // { dg-message "candidate" }
 
 template<class CLASS>
-void cvFunction(void (CLASS::* method)() const volatile) {}
+void cvFunction(void (CLASS::* method)() const volatile) {} // { dg-message "candidate" }
 
 int main() {
   mFunction(&MyClass::mMethod);

gcc/testsuite/g++.dg/template/unify11.C

@@ -8,7 +8,7 @@ struct A
 
 template <typename S, typename T, typename U, typename S::v = &S::v::s>
 typename S::A
-foo (S c, T t, U u)
+foo (S c, T t, U u)		// { dg-message "candidate" }
 {
 }
 

gcc/testsuite/g++.dg/template/unify6.C

@@ -8,7 +8,7 @@ template <typename T> void Foo1 (T const *a) {a (1);} // #2
 
 template <typename T> T const *Foo2 (T *);
 
-template <typename T> void Foo3 (T *, T const * = 0);
+template <typename T> void Foo3 (T *, T const * = 0); // { dg-message "candidate" }
 
 void Bar ()
 {

gcc/testsuite/g++.dg/template/unify7.C

@@ -3,7 +3,7 @@
 
 // PR c++/3518
 template <typename T> void Foo (const T &);
-template <typename T> void Baz (const T (*)());
+template <typename T> void Baz (const T (*)()); // { dg-message "candidate" }
 
 int &f ();
 

gcc/testsuite/g++.dg/template/unify9.C

@@ -4,7 +4,7 @@
 // Origin:Wolfgang Bangerth <bangerth@dealii.org>
 // PR 21799: deduction of cvqualifiers on member functions was wrong
 
-template <class T> void f (T &,       void (T::*)()      ); 
+template <class T> void f (T &,       void (T::*)()      ); // { dg-message "candidate" }
  
 struct X { 
     void g() const {}

gcc/testsuite/g++.dg/template/varmod1.C

@@ -1,6 +1,6 @@
 // { dg-options "-w" }
 
-template<typename T> void foo(T);
+template<typename T> void foo(T); // { dg-message "candidate" }
  
 void bar()
 {

gcc/testsuite/g++.old-deja/g++.brendan/crash56.C

@@ -292,7 +292,7 @@ SetLD<T>::contains(const T& item) const
 }
 template<class T>
 int
-operator==(const SetLD<T>& a, const SetLD<T>& b)
+operator==(const SetLD<T>& a, const SetLD<T>& b) // { dg-message "note" }
 {
     if (a.length() != b.length())
 	return FALSE;

gcc/testsuite/g++.old-deja/g++.law/operators32.C

@@ -7,7 +7,7 @@
 //
 
 template <class T>
-void ffree(long rows, T** array)
+void ffree(long rows, T** array) // { dg-message "candidate" }
 {
 for( long i = 0; i < rows; i++ )
   delete [] array[i];                   // delete row
@@ -21,7 +21,7 @@ return array = new T[size];
 }
 
 template <class T>
-T** allocate2d(long d1, long d2, T**& array)
+T** allocate2d(long d1, long d2, T**& array) // { dg-message "note" }
 {
 if( allocate1d(d1, array) != 0 )
   {

gcc/testsuite/g++.old-deja/g++.pt/crash28.C

@@ -2,7 +2,7 @@
 // { dg-options "" }
 
 template <class ARRY>
-inline unsigned int asize(ARRY &a)
+inline unsigned int asize(ARRY &a) // { dg-message "candidate" }
 {
   return sizeof(a) / sizeof(a[0]);
 }

gcc/testsuite/g++.old-deja/g++.pt/crash60.C

@@ -7,7 +7,7 @@
 template< typename SID, class SDR >
 void k( SID sid, SDR* p,
  void (SDR::*)
- ( typename SID::T ) );
+ ( typename SID::T ) );		// { dg-message "candidate" }
 
 struct E { };
 struct S { void f( int ); };

gcc/testsuite/g++.old-deja/g++.pt/explicit38.C

@@ -1,6 +1,6 @@
 // { dg-do assemble  }
 template <int I>
-void f(int j);
+void f(int j);			// { dg-message "candidate" }
 
 void g()
 {

gcc/testsuite/g++.old-deja/g++.pt/explicit39.C

@@ -1,6 +1,6 @@
 // { dg-do assemble  }
 template <class T>
-void f(int i);
+void f(int i);			// { dg-message "candidate" }
 
 void g()
 {

gcc/testsuite/g++.old-deja/g++.pt/explicit41.C

@@ -1,6 +1,6 @@
 // { dg-do assemble  }
 template <int I>
-void f(int i);
+void f(int i);			// { dg-message "candidate" }
 
 void g()
 {

gcc/testsuite/g++.old-deja/g++.pt/explicit67.C

@@ -9,9 +9,9 @@ void g(int);
 void g(double);
 
 template <int* IP>
-void foo();
+void foo();			// { dg-message "note" }
 template <long l>
-void foo();
+void foo();			// { dg-message "note" }
 
 void bar()
 {

gcc/testsuite/g++.old-deja/g++.pt/explicit77.C

@@ -7,7 +7,7 @@ template <int I, int J>
 struct S<I, J, 2> : public S<I, I, I>, S<J, J, J> {};
 
 template <int I, int J, int K>
-void f(S<I, J, K>, S<I, I, I>);
+void f(S<I, J, K>, S<I, I, I>);	// { dg-message "candidate" }
 
 void g() {
   S<0, 0, 0> s0;

gcc/testsuite/g++.old-deja/g++.pt/expr2.C

@@ -4,7 +4,7 @@ template <int I>
 struct S {};
 
 template <int J>
-void foo(S<J + 2>);
+void foo(S<J + 2>);		// { dg-message "candidate" }
 
 void bar()
 {

gcc/testsuite/g++.old-deja/g++.pt/overload7.C

@@ -1,4 +1,5 @@
 // { dg-do assemble  }
+// { dg-prune-output "note" }
 
 // Adapted from testcase by Corey Kosak <kosak@cs.cmu.edu>
 

gcc/testsuite/g++.old-deja/g++.pt/ptrmem6.C

@@ -13,9 +13,9 @@ public:
 };
 
 template <void (A::*)() >
-void g() {}
+void g() {}			// { dg-message "candidate" }
 template <int A::*>
-void h() {}
+void h() {}			// { dg-message "candidate" }
 
 
 int main() {

gcc/testsuite/g++.old-deja/g++.pt/spec5.C

@@ -1,13 +1,13 @@
 // { dg-do assemble  }
 
 template <class T>
-void f(T t1, T t2);
+void f(T t1, T t2);		// { dg-message "candidate" }
 
 template <>
 void f(int i, int j);
 
 template <class T>
-void g(T t1, T t2) {}
+void g(T t1, T t2) {}		// { dg-message "candidate" }
 
 template void g(int i, int j);
 

gcc/testsuite/g++.old-deja/g++.pt/spec6.C

@@ -3,7 +3,7 @@
 struct S1
 {
   template <class T>
-  void f(T t1, T t2);
+  void f(T t1, T t2);		// { dg-message "candidate" }
 };
 
 
@@ -14,7 +14,7 @@ template <class U>
 struct S2
 {
   template <class T>
-  void f(T t1, T t2);
+  void f(T t1, T t2);		// { dg-message "candidate" }
 };
 
 template <>

gcc/testsuite/g++.old-deja/g++.pt/t24.C

@@ -1,7 +1,7 @@
 // { dg-do assemble  }
 // { dg-options "" }
 
-template <class X> int f (X x, X y) { return 23; }
+template <class X> int f (X x, X y) { return 23; } // { dg-message "candidate" }
 
 int foo () {
   return f (7);	// { dg-error "" } 

gcc/testsuite/g++.old-deja/g++.pt/unify4.C

@@ -1,5 +1,5 @@
 // { dg-do assemble  }
-template <class T> void f (T);
+template <class T> void f (T);	// { dg-message "candidate" }
 
 void g ();
 void g (int);

gcc/testsuite/g++.old-deja/g++.pt/unify6.C

@@ -19,7 +19,7 @@ template<> void fn<int &>() {} // ok, specialize A
 template<> void fn<void ()>() {} // ok, specialize A
 
 // now make sure we moan when we really should
-template<class T> void foo(T const *){}
+template<class T> void foo(T const *){} // { dg-message "candidate" }
 
 void f()
 {

gcc/testsuite/g++.old-deja/g++.pt/unify8.C

@@ -8,9 +8,9 @@
 // overload resolution.
 
 
-template <typename T> void Foo (T const **);
+template <typename T> void Foo (T const **); // { dg-message "candidate" }
 template <typename T> void Bar (T const * const *);
-void Foo (int);       // { dg-message "candidate" } 
+void Foo (int);       // { dg-message "note" }
 void Foo (float);     // { dg-message "note" } candidate
 
 void baz (int **p1)

gcc/testsuite/g++.old-deja/g++.robertl/eb119.C

@@ -1,6 +1,6 @@
 // { dg-do assemble  }
 template<bool B>
-void f()
+void f()			// { dg-message "candidate" }
 {
 }
 

gcc/testsuite/g++.old-deja/g++.robertl/eb79.C

@@ -1,4 +1,5 @@
 // { dg-do assemble  }
+// { dg-prune-output "note" }
 // Makes bogus x86 assembly code.
 #include <iostream>
 

gcc/testsuite/g++.old-deja/g++.robertl/eb98.C

@@ -5,7 +5,7 @@
     template<class T, unsigned int Length>
     inline
     unsigned int
-    extent(T (&x)[Length])
+    extent(T (&x)[Length])	// { dg-message "candidate" }
     {
             return Length;
     }

libstdc++-v3/ChangeLog

@@ -1,3 +1,10 @@
+2010-05-12  Jason Merrill  <jason@redhat.com>
+
+	* testsuite/20_util/auto_ptr/assign_neg.cc: Expect template
+	candidate messages.
+	* testsuite/20_util/unique_ptr/assign/assign_neg.cc: Likewise.
+	* testsuite/20_util/weak_ptr/comparison/cmp_neg.cc: Likewise.
+
 2010-05-11  Silvius Rus  <silvius.rus@gmail.com>
 
 	PR libstdc++/43259

libstdc++-v3/testsuite/20_util/auto_ptr/assign_neg.cc

@@ -47,4 +47,5 @@ main()
   return 0;
 }
 // { dg-error "candidates" "" { target *-*-* } 134 } 
+// { dg-error "note" "" { target *-*-* } 152 }
 // { dg-error "::auto_ptr" "" { target *-*-* } 262 } 

libstdc++-v3/testsuite/20_util/unique_ptr/assign/assign_neg.cc

@@ -52,7 +52,8 @@ test03()
 // { dg-error "deleted function" "" { target *-*-* } 357 }
 // { dg-error "used here" "" { target *-*-* } 42 }
 // { dg-error "no matching" "" { target *-*-* } 48 }
-// { dg-warning "candidates are" "" { target *-*-* } 130 }
+// { dg-warning "note" "" { target *-*-* } 130 }
+// { dg-warning "note" "" { target *-*-* } 134 }
 // { dg-warning "note" "" { target *-*-* } 123 }
 // { dg-warning "note" "" { target *-*-* } 118 }
 // { dg-warning "note" "" { target *-*-* } 113 }

libstdc++-v3/testsuite/20_util/weak_ptr/comparison/cmp_neg.cc

@@ -40,3 +40,12 @@ main()
   test01();
   return 0;
 }
+
+// { dg-warning "note" "" { target *-*-* } 281 }
+// { dg-warning "note" "" { target *-*-* } 407 }
+// { dg-warning "note" "" { target *-*-* } 831 }
+// { dg-warning "note" "" { target *-*-* } 511 }
+// { dg-warning "note" "" { target *-*-* } 1005 }
+// { dg-warning "note" "" { target *-*-* } 340 }
+// { dg-warning "note" "" { target *-*-* } 290 }
+// { dg-warning "note" "" { target *-*-* } 190 }