re PR c++/48261 (internal compiler error: in lookup_template_function, at cp/pt.c:6227)

	PR c++/48261
	* pt.c (lookup_template_function): Handle non-function.

From-SVN: r175766

gcc/cp/ChangeLog

 2011-07-01  Jason Merrill  <jason@redhat.com>
 
+	PR c++/48261
+	* pt.c (lookup_template_function): Handle non-function.
+
 	PR c++/48593
 	* pt.c (tsubst_qualified_id): Check PTRMEM_OK_P.
 	* tree.c (build_qualified_name): Set PTRMEM_OK_P.

gcc/cp/pt.c

@@ -6622,8 +6622,12 @@ lookup_template_function (tree fns, tree arglist)
     return error_mark_node;
 
   gcc_assert (!arglist || TREE_CODE (arglist) == TREE_VEC);
-  gcc_assert (fns && (is_overloaded_fn (fns)
-		      || TREE_CODE (fns) == IDENTIFIER_NODE));
+
+  if (!is_overloaded_fn (fns) && TREE_CODE (fns) != IDENTIFIER_NODE)
+    {
+      error ("%q#D is not a function template", fns);
+      return error_mark_node;
+    }
 
   if (BASELINK_P (fns))
     {

gcc/testsuite/ChangeLog

 2011-07-01  Jason Merrill  <jason@redhat.com>
 
+	PR c++/48261
+	* g++.dg/template/template-id-3.C: New.
+
 	PR c++/48593
 	* g++.dg/template/qualified-id4.C: New.
 

gcc/testsuite/g++.dg/template/template-id-3.C

+// PR c++/48261
+
+typedef double (*gaddType)(double,double);
+struct Foo2
+{
+  static gaddType add;
+};
+
+template<typename T>
+struct Something
+{
+  void work()
+  {
+    double x=T::template add<double>(5.0,6.0); // { dg-error "add" }
+  }
+};
+
+int main()
+{
+  Something<Foo2> s2;
+  s2.work();
+}