On Wednesday 23 March 2005 01:48 pm, Vinod Kashyap wrote: > If any kernel module has the following, or a similar line in it: > ----- > char x[100] = {0}; > ----- > building of the GENERIC kernel on FreeBSD 5 -STABLE for amd64 > as of 03/19/05, fails with the following message at the time of > linking: "undefined reference to `memset'". > > The same problem is not seen on i386. > > The problem goes away if the above line is changed to: > ----- > char x[100]; > memset(x, 0, 100); > ----- > > Adding CFLAGS+=-fbuiltin, or CFLAGS+=-fno-builtin to > /sys/conf/Makefile.amd64 does not help. > > Anyone knows what's happening?
Something fishy is going on. I've tried this on both 5.x and 6.0 and both systems created a bss object called 'x', not something that called memset. For example: [EMAIL PROTECTED]:17pm]/home/src/sys/modules/twe-21# nm obj/twe.ko | grep x U busdma_lock_mutex U sysctl_ctx_free U sysctl_ctx_init 0000000000000080 b x [EMAIL PROTECTED]:17pm]/home/src/sys/modules/twe-22# nm obj/twe.ko | grep memset [EMAIL PROTECTED]:17pm]/home/src/sys/modules/twe-23# I wondered if it might be because of something like -O2 (don't do that) or no -O at all, but I couldn't make it happen even then. -- Peter Wemm - [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] "All of this is for nothing if we don't go to the stars" - JMS/B5 _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"