builtins.c (stabilize_va_list): Don't INDIRECT_REF through an ARRAY_TYPE.

builtins.c (stabilize_va_list): Don't INDIRECT_REF through an ARRAY_TYPE.

        * builtins.c (stabilize_va_list): Don't INDIRECT_REF through
        an ARRAY_TYPE.
        (std_expand_builtin_va_start): Back out one word if !stdarg_p.
        (expand_builtin_va_end): Evaluate arg for side effects.
        * c-common.c (c_common_nodes_and_builtins): Construct a
        va_list_arg_type_node to handle array decomposition to pointer.

From-SVN: r28283