Re: do_div() silently truncates "base" to 32bit

[Joe Perches]

On Fri, 2013-08-30 at 15:48 -0700, Randy Dunlap wrote:
> On 08/30/13 15:14, Anatol Pomozov wrote:
> > But another question still remains: why compiler does not warn that
> > size truncation happens? How to prevent bugs like CFQ one in the
> > future? Should we add a compile-time assert to do_div() to prevent
> > passing 64 numbers in "base" macro parameter?
> That sounds like a fine idea to me.

Geert thought so too and submitted a patch

http://www.spinics.net/lists/linux-btrfs/msg26788.html


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