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2018.12.11 13:36 "SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.11 14:01 "Re: SeekOK and WriteOK", by Bob Friesenhahn
2018.12.11 14:09 "Re: SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.11 14:24 "Re: SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.11 14:29 "Re: SeekOK and WriteOK", by Nicolas Ruff
2018.12.11 18:54 "Re: SeekOK and WriteOK", by Bob Friesenhahn
2018.12.12 08:53 "Re: SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.13 11:04 "Re: SeekOK and WriteOK", by Emmanuel Cosnard
2018.12.13 13:13 "Re: SeekOK and WriteOK", by Paavo Helde

2018.12.13 13:13 "Re: SeekOK and WriteOK", by Paavo Helde

On 13.12.2018 13:04, Emmanuel Cosnard wrote:
> Hello,
>
> I found out what the problem was: the buffer size I gave in input of 
> the WriteOK was larger than the actual size of the buffer.
> What I don't understand is how libtiff does to not crash, but only 
> sometimes return an error (-1), and sometimes, writing the data of the 
> buffer anyway. Do you have any explanation?

Looks like you are new to the concept of UB. Here is a helpful link: 
https://raphlinus.github.io/programming/rust/2018/08/17/undefined-behavior.html

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