using off_t in talloc

[Stefan (metze) Metzmacher]

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Hi *,

I thought about removing off_t from talloc,
it's used as return value of talloc_total_size() and
talloc_total_blocks().

I have added some configure checks
to the standalone build of talloc.
And it seems that:

sizeof(off_t) is 8 (only Stratos has 4)
sizeof(size_t) is 4 on x86 and 8 on 64bit platforms

Are there any platforms where the total RAM-size per
process doesn't fit into size_t?

If it always fits, I'll remove off_t from talloc

metze
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