Re: [PATCH 5/5] typesafe: TIMER_INITIALIZER and setup_timer

[Al Viro]

On Mon, Mar 10, 2008 at 12:07:19PM +1100, Rusty Russell wrote:

>    Worst, I can't see a way to apply your technique in general, for 
> non-void-returning functions (eg. interrupt handlers).

Interrupt handlers are easy.  Just switch irqreturn_t from into to
struct {int x;}, adjust the rest of irqreturn.h accordingly, add
extern void want_irqreturn_t(irqreturn_t);
then replace 0 ? (f)(x) : (void)0 with want_irqreturn_t((f)(x)) in the
expression under sizeof and we are all set (assuming Jeff's elimination
of irq number in place by then or done in parallel).
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