re PR c++/31488 (va_list considered non-POD)

        PR c++/31488
        * tree.c (pod_type_p): Return 1 for structs created by the back end.

From-SVN: r143308

gcc/cp/ChangeLog

+2009-01-12  Jason Merrill  <jason@redhat.com>
+
+	PR c++/31488
+	* tree.c (pod_type_p): Return 1 for structs created by the back end.
+
 2009-01-12  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/32041

gcc/cp/tree.c

@@ -2127,8 +2127,10 @@ pod_type_p (const_tree t)
   if (TREE_CODE (t) == VECTOR_TYPE)
     return 1; /* vectors are (small) arrays of scalars */
 
-  if (! CLASS_TYPE_P (t))
+  if (! RECORD_OR_UNION_CODE_P (TREE_CODE (t)))
     return 0; /* other non-class type (reference or function) */
+  if (! CLASS_TYPE_P (t))
+    return 1; /* struct created by the back end */
   if (CLASSTYPE_NON_POD_P (t))
     return 0;
   return 1;

gcc/testsuite/ChangeLog

+2009-01-12  Jason Merrill  <jason@redhat.com>
+
+	* g++.dg/other/vararg-3.C: New test.
+
 2009-01-12  Daniel Jacobowitz  <dan@codesourcery.com>
 
 	* gcc.target/powerpc/ppc-spe.c: Compile for all EABI targets.

gcc/testsuite/g++.dg/other/vararg-3.C

+// PR c++/31488: va_list considered non-POD on alpha
+// { dg-do compile }
+
+typedef __builtin_va_list __gnuc_va_list;
+typedef __gnuc_va_list va_list;
+
+extern int foo (int a, int b, ...);
+
+int bar (int a, int b, ...)
+{
+  va_list args;
+  __builtin_va_start(args,b);
+  int result = foo (a, b, args);
+  __builtin_va_end(args);
+  return result;
+}