[Cialug] Include file needed on FreeBSD but not Linux

[Jonathan A. Kollasch]

On Sun, Oct 29, 2017 at 07:10:32PM -0500, Brian Wood wrote:
> Hi.  I made a change recently to this file:
> https://github.com/Ebenezer-group/onwards/blob/master/File.hh#L4
> 
> and tested it on Linux, but not on FreeBSD.  Today I tried it on
> FreeBSD and it didn't compile.  I had to add an include for
> sys/stat.h to get it to compile on FreeBSD.  The error message
> had to do with not finding constants like S_IRUSR.  Does anyone
> know if FreeBSD is right or wrong in this?  Thanks in advance.

FreeBSD is not wrong here.

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_stat.h.html

Or: if you need to ensure the visibility of the S_IRUSR constant you
need to #include <sys/stat.h>.

	Jonathan Kollasch