On 2012-07-20 16:49, Kim Culhan wrote: > Seeing this for r:238655 ... > In file included from > /usr/src/sys/modules/dtrace/dtrace/../../../sys/pcpu.h:44: > ./machine/pcpu.h:226:13: error: indirection of non-volatile null > pointer will be deleted, not trap > [-Werror,-Wnull-dereference] > : "m" (*(char *)OFFSETOF_CURTHREAD)); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~ > ./machine/pcpu.h:226:13: note: consider using __builtin_trap() or > qualifying pointer with 'volatile'
That's indeed a valid warning from clang, since OFFSETOF_CURTHREAD is usually zero. It's probably due to recent work on dtrace. I'm not in the neighborhood of a FreeBSD box right now to verify, but can you please try to change the cast to "(volatile char *)"? That should fix the warning. _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
