[PATCH][BZ #16996] get_nprocs: Only return explictly set cache values

[Siddhesh Poyarekar]

On Thu, Jun 12, 2014 at 01:37:37PM -0700, Roland McGrath wrote:
> time_t is always an integer type counting seconds since 1970 in glibc.
> However, it can be signed and negative values can be valid timestamps (if
> you set your computer's clock to 1969, for example).

Oh yes, so:

    (now == prev && now != 0)

Siddhesh
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