On Thursday 23 May 2013, Geert Uytterhoeven wrote:
> > -config BUG
> > - bool "BUG() support" if EXPERT
> > - default y
> > - help
> > - Disabling this option eliminates support for BUG and WARN,
> > reducing
> > - the size of your kernel image and potentially quietly ignoring
> > - numerous fatal conditions. You should only consider disabling
> > this
> > - option for embedded systems with no facilities for reporting
> > errors.
> > - Just say Y.
>
> ... It's about reducing memory size on devices where you can't show bug or
> warning messages.
>
> > So need get rid of 'CONFIG_BUG', and let it always enabled everywhere.
>
> So please keep it.
Agreed. The one annoying property of disabling BUG() support is that it causes
a large number of build warnings since the compiler now has to assume that a lot
of code is reachable when it is normally annotate as unreachable.
When I do "randconfig" tests, I always turn on CONFIG_BUG because of this.
Arnd
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