re PR c++/48115 (internal compiler error: in type_has_nontrivial_copy_init, at cp/tree.c:2482)

	PR c++/48115
	* call.c (convert_arg_to_ellipsis): Handle incomplete type.

From-SVN: r171066

gcc/cp/ChangeLog

 2011-03-16  Jason Merrill  <jason@redhat.com>
 
+	PR c++/48115
+	* call.c (convert_arg_to_ellipsis): Handle incomplete type.
+
+2011-03-16  Jason Merrill  <jason@redhat.com>
+
 	* parser.c (cp_parser_abort_tentative_parse): Make sure we haven't
 	committed to this tentative parse.
 

gcc/cp/call.c

@@ -5671,6 +5671,10 @@ convert_arg_to_ellipsis (tree arg)
   arg_type = TREE_TYPE (arg);
 
   if (arg != error_mark_node
+      /* In a template (or ill-formed code), we can have an incomplete type
+	 even after require_complete_type, in which case we don't know
+	 whether it has trivial copy or not.  */
+      && COMPLETE_TYPE_P (arg_type)
       && (type_has_nontrivial_copy_init (arg_type)
 	  || TYPE_HAS_NONTRIVIAL_DESTRUCTOR (arg_type)))
     {

gcc/testsuite/ChangeLog

+2011-03-16  Jason Merrill  <jason@redhat.com>
+
+	* g++.dg/template/incomplete6.C: New.
+
 2011-03-16  Jeff Law <law@redhat.com>
 
 	* gcc.dg/tree-ssa/vrp55.c: New test.

gcc/testsuite/g++.dg/template/incomplete6.C

+// PR c++/48115
+
+template<typename> struct templ { };
+
+template<typename T> T declval();
+
+typedef int (*F2)(...);
+
+template<int> struct Int { };
+
+template<typename F, typename T>
+struct S
+{
+    template<typename A>
+        Int<sizeof( declval<F>()(T()) )>
+        f(A);
+};
+
+int main()
+{
+    S<F2, templ<int> >().f(0);
+}