On Thu, Dec 13, 2012 at 10:55 AM, Shraddha Kamat <sh2008ka@gmail.com> wrote:
I notice
do { // do something 1 ; // do something 2 ; ... } while (0);
being used everywhere in the kernel code I just can't guess of any use of this other than executing couple of C statements together ?
Is there any special purpose of doing this ?? Sorry of such a silly question - I am just trying to learn kernel hacking basics.
-- Shraddha
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http://stackoverflow.com/questions/257418/do-while-0-what-is-it-good-for This link gives you a pretty good answer. The basic rational behind using such a construct is when you want to a define a multi-line macro.