skaller wrote:

> But it isn't an errno value that is reported, it is the index
> of the variant that is 12, and that is "Invalid Argument".

Ok.

> It is not clear that a seek to an invalid position in the file
> is going to succeed. It's also not clear to me that the seek
> argument isn't 32 bits (depends on complex ugly GNU macro
> hackery what type off_t is .. my Caml got built with
> the LARGE_FILE macro thing so it should be 64 bits).

Shouldn't off_t always be 64 bits on a 64 bit CPU? I only see 
this problem on x86-64 and Sys.word_size is 64.

Erik
-- 
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Erik de Castro Lopo
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"I run Linux on pretty much everything except the microwave and
washing machine. Those are tempting targets but would probably
make Telsa extremely cross." -- Alan Cox