* obj-c++.dg/bitfield-[1-5].mm: New.

[pf3gnuchains/gcc-fork.git] / gcc / tree-stdarg.c

diff --git a/gcc/tree-stdarg.c b/gcc/tree-stdarg.c
index 5c3b81b..c0d16b1 100644 (file)
--- a/gcc/tree-stdarg.c
+++ b/gcc/tree-stdarg.c
@@ -660,16 +660,30 @@ execute_optimize_stdarg (void)
 
          si.va_start_count++;
          ap = TREE_VALUE (TREE_OPERAND (call, 1));
-         if (TREE_CODE (ap) != ADDR_EXPR
-             || TYPE_MAIN_VARIANT (TREE_TYPE (TREE_OPERAND (ap, 0)))
-                != TYPE_MAIN_VARIANT (va_list_type_node)
-             || TREE_CODE (TREE_OPERAND (ap, 0)) != VAR_DECL)
+
+         if (TREE_CODE (ap) != ADDR_EXPR)
            {
              va_list_escapes = true;
              break;
            }
-
          ap = TREE_OPERAND (ap, 0);
+         if (TREE_CODE (ap) == ARRAY_REF)
+           {
+             if (! integer_zerop (TREE_OPERAND (ap, 1)))
+               {
+                 va_list_escapes = true;
+                 break;
+               }
+             ap = TREE_OPERAND (ap, 0);
+           }
+         if (TYPE_MAIN_VARIANT (TREE_TYPE (ap))
+             != TYPE_MAIN_VARIANT (va_list_type_node)
+             || TREE_CODE (ap) != VAR_DECL)
+           {
+             va_list_escapes = true;
+             break;
+           }
+
          if (is_global_var (ap))
            {
              va_list_escapes = true;