[fpc-pascal] question about FpTimes in BaseUnix package

[Bruce Bauman]

I am using the FpTimes function from the BaseUnix package. The
documentation says it returns -1 on an error, otherwise the number of
clock ticks since boot time. However, the return type of this function
is TClock, which is unsigned.

This, if I say:

X := BaseUnix.FpTimes(T);

if (X <> -1) then ...

I get a compiler-time warning (range check error while evaluating
constants).

Should the return type not be unsigned? Is checking the result against
-1 OK?

-- Bruce 
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