This attribute was introduced in gcc 3.5. In order to avoid such warnings, add a gcc version check when defining the SENTINEL_ATTR macro. (This warning message, in particular, was issued by a gcc 3.4.4 compiler). Signed-off-by: Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxx> --- Hi Chris, I had some, somewhat old, patches kicking around in my sparse repo which may be useful; so I'm sending them along for your consideration. For this patch, an alternative solution (which I haven't tried) would be to add -Wno-attributes to CFLAGS. ATB, Ramsay Jones lib.h | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/lib.h b/lib.h index b22fa93..919b5b1 100644 --- a/lib.h +++ b/lib.h @@ -70,7 +70,11 @@ struct token *expect(struct token *, int, const char *); #ifdef __GNUC__ #define FORMAT_ATTR(pos) __attribute__ ((__format__ (__printf__, pos, pos+1))) #define NORETURN_ATTR __attribute__ ((__noreturn__)) -#define SENTINEL_ATTR __attribute__ ((__sentinel__)) +#if ((__GNUC__ * 100 + __GNUC__MINOR__) >= 305) /* gcc version >= 3.5 */ +# define SENTINEL_ATTR __attribute__ ((__sentinel__)) +#else +# define SENTINEL_ATTR +#endif #else #define FORMAT_ATTR(pos) #define NORETURN_ATTR -- 1.6.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-sparse" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
