re PR c++/33962 (ICE at call to overloaded template function with…

re PR c++/33962 (ICE at call to overloaded template function with variable-length function argument list)

	PR c++/33962
	* pt.c (more_specialized_fn): Don't segfault if one or
	both argument list end with ellipsis.

	* g++.dg/overload/template3.C: New test.

From-SVN: r130308

gcc/cp/ChangeLog

+2007-11-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/33962
+	* pt.c (more_specialized_fn): Don't segfault if one or
+	both argument list end with ellipsis.
+
 2007-11-18  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/30988

gcc/cp/pt.c

@@ -13523,6 +13523,10 @@ more_specialized_fn (tree pat1, tree pat2, int len)
 
       args1 = TREE_CHAIN (args1);
       args2 = TREE_CHAIN (args2);
+
+      /* Stop when an ellipsis is seen.  */
+      if (args1 == NULL_TREE || args2 == NULL_TREE)
+	break;
     }
 
   processing_template_decl--;

gcc/testsuite/ChangeLog

+2007-11-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/33962
+	* g++.dg/overload/template3.C: New test.
+
 2007-11-19  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR fortran/33317

gcc/testsuite/g++.dg/overload/template3.C

+// PR c++/33962
+// { dg-do compile }
+
+template <class T> struct A;
+
+template <class U> void foo (const U &x, ...);
+template <class T> void foo (const A<T> &x, ...);
+
+void bar (const A<int> &x, const char *y)
+{
+  foo (x, y);
+}
+
+/* { dg-final { scan-assembler "_Z3fooIiEvRK1AIT_Ez" } } */
+/* { dg-final { scan-assembler-not "_Z3fooI1AIiEEvRKT_z" } } */