[PATCH] Fix PR65261

[Marek Polacek]

On Mon, Mar 02, 2015 at 06:22:49PM +0100, Markus Trippelsdorf wrote:
> --- a/libcpp/lex.c
> +++ b/libcpp/lex.c
> @@ -519,6 +519,7 @@ init_vectorized_lexer (void)
>     and VSX unaligned loads (when VSX is available).  This is otherwise
>     the same as the pre-GCC 5 version.  */
>  
> +__attribute__ ((no_sanitize_undefined))
>  static const uchar *
>  search_line_fast (const uchar *s, const uchar *end ATTRIBUTE_UNUSED)
>  {

I don't think you can use the __attribute__ just like that.  If adding
such an attribute is the correct thing to do, then we should probably
define a macro in include/ansidecl.h, with a proper GCC_VERSION guard.

	Marek