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SubjectRe: The return of the return of crunch time (2.5 merge candidate list 1.6)
> > C) How would having ALL times rounded to a second be an improvement?
> foo.c and foo.o would both have timestamps of 0. make considers
> the target foo.o newer in this case, so will not rebuild it.

But other stuff could break because it sees mtime > gettimeofday
(strictly make could trigger a "your clock is warping" warning)
It's a tradeoff, all has some disadvantages. The simple truncation
wins here because it's the simplest (KISS)

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