Re: [Chicken-users] C_word type / Cython (warning: passing argument 2 from incompatible pointer type)

[John Cowan]

Bobby Powers scripsit:

> In C, at least on *nix machines, a long is defined to be the same as the
> pointer size.  So on 32-bit systems its synonymous with int, and on 64-bit
> its the same as long long.  Why then explicitly define C_word to int on
> 32-bit then, as 'long' should work on both 32 and 64 bit platforms?

Because there are systems like Win64, where long is 32 bits but pointers are
64-bit ("LLP64") and like Unicos (Cray Unix), where all of int, long, and
pointer are 64-bit ("ILP64").

Note that the C standard has nothing to say about pointer size vs. integer
size, and it only requires that long >= int >= short.

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After fixing the Y2K bug in an application:     John Cowan
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        DATE: MONDAK, JANUARK 1, 1900           http://www.ccil.org/~cowan