On Fri, May 25, 2012 at 10:11:54AM +0200, Dodji Seketeli wrote:
> --- a/libcpp/lex.c
> +++ b/libcpp/lex.c
> @@ -589,8 +589,8 @@ search_line_fast (const uchar *s, const uchar *end
> ATTRIBUTE_UNUSED)
>
> {
> #define N (sizeof(vc) / sizeof(long))
> -
> - typedef char check_count[(N == 2 || N == 4) * 2 - 1];
> + /* The below is a static assertion. */
> + extern char check_count[(N == 2 || N == 4) * 2 - 1];
> union {
> vc v;
> unsigned long l[N];
Alternatively you could put the static assertion with the comment
into the l field, i.e.
/* Statically assert that N is 2 or 4. */
unsigned long l[(N == 2 || N == 4) ? N : -1];
Jakub
