On 9 October 2012 12:33, Andrey Chernov <a...@freebsd.org> wrote: > Do you check assembler output for _both_ cases?
Yes. > In my testing clang and gcc xor's 'junk' properly in case it have > 'volatile' keyword (as in srandomdev()) and elide it without 'volatile'. volatile is still undefined: see 5.1.2.2.3 and 6.7.2.4 of ISO9899 > IMHO this change should be backed out for srandomdev() and adding > 'volatile' for sranddev() instead. http://blog.eitanadler.com/2012/10/reduced-entropy-in-rand-and-random.html for additional details and actual assembler output. -- Eitan Adler Source & Ports committer X11, Bugbusting teams _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
