Paul Eggert wrote: > * lib/time.in.h (struct __time_t_must_be_integral): Rewrite > 2 * ((time_t) 1 / 2 == 0) - 1 to (time_t) 1; this suffices to > verify that time_t cannot be floating.
I disagree that this is enough. The C standard says that a cast to floating- point types cannot be portably used in integer constant expressions. But a compiler is free to support this, as an extension. _If_ a compiler supports it as an extension, then 2 * ((time_t) 1 / 2 == 0) - 1 will evaluate to -1 (time_t) 0.5 == 0 ? 1 : -1 will evaluate to -1 but the expression you put in: (time_t) 1 will evaluate to 1 Bruno
