[PATCH 1/2] Cast clock_t type to unsigned long

Mike Frysinger vapier at gentoo.org
Sun Apr 15 20:30:36 UTC 2012

On Sunday 15 April 2012 16:22:06 H.J. Lu wrote:
> On Sun, Apr 15, 2012 at 12:03 PM, Mike Frysinger <vapier at gentoo.org> wrote:
> > On Sunday 15 April 2012 14:17:13 H.J. Lu wrote:
> >> Linux kernel v3.4 adds x32 support whose clock_t is long long.  This
> >> patch casts clock_t type to unsigned long for "%lu".
> > 
> > shouldn't we cast it to long long then and use %llu ?
> It also works for x32.
> I don't think it makes a difference in practice.  I doubt clock_t value
> returns by those system calls can overflow 32bit integer.

famous last words!

seriously though, if clock_t is known to be 64bits, then we should be decoding 
it accordingly.  otherwise, i'd question why it was declared 64bits in the 
first place instead of keeping it as 32.
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