Warner Losh <[EMAIL PROTECTED]> writes: > Can we not have special flags for tinderbox builds? It make > pre-commit testing a big pita. How about just -O on both head and > in RELENG_6?
As I have repeatedly pointed out in the past, -O2 catches more bugs because it enables optimizations which require more extensive coverage analysis. > The kernel make files have special magic to disable the parts of -O2 > that are known to be bad because tinderbox uses -O2, despite efforts > in the past to stop the practice. The kernel has special magic to disable strict aliasing checks because certain people regularly commit kernel code which violates C aliasing rules and refuse to fix it. The userland code does not need these hacks because I spent a lot of time and effort fixing aliasing bugs in e.g. libalias. Aliasing violations are not trivial matters; they prevent the compiler from optimizing code which (for instance) accesses structure members through pointers to the structure. There is a lot of this in the kernel. DES -- Dag-Erling Smørgrav - [EMAIL PROTECTED] _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
