where is ssize_t defined?

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mangokm40
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where is ssize_t defined?

Postby mangokm40 » 10 Jul 2015 21:49

I downloaded the latest source for 3.0.0 and the file "libvlc_media.h" has a type "ssize_t" being used on line 306.

I can't find where this type is defined. I thought it might be a typo for "size_t", but the comments say "...strictly positive
number...". Maybe the 's' at the beginning is for "strictly"?

fabsther
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Re: where is ssize_t defined?

Postby fabsther » 11 Jul 2015 15:09

Hi,

Basicaly size_t is standard in C++ for an size value, as an alias to unsigned int.
ssize_t is in fact signed size_t, so a simple int that allow you to return negative value on error...

mangokm40
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Re: where is ssize_t defined?

Postby mangokm40 » 13 Jul 2015 15:08

Thank you. I thought size_t was a C standard. However, I'd never used ssize_t. Is it also a C (or C++) standard?
Do you know where it is defined? I changed the function to return int, for now. I'm just wondering if I'm missing a
definition file or if the nightly for 3.0.0 is missing something. Maybe I shouldn't care yet. :)

Jean-Baptiste Kempf
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Re: where is ssize_t defined?

Postby Jean-Baptiste Kempf » 15 Jul 2015 23:11

ssize_t is POSIX, not C99, IIRC. Aliasing it to unsigned int will work.
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