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PERLFREEBSD(1)	       Perl Programmers	Reference Guide		PERLFREEBSD(1)

       perlfreebsd - Perl version 5 on FreeBSD systems

       This document describes various features	of FreeBSD that	will affect
       how Perl	version	5 (hereafter just Perl)	is compiled and/or runs.

   FreeBSD core	dumps from readdir_r with ithreads
       When perl is configured to use ithreads,	it will	use re-entrant library
       calls in	preference to non-re-entrant versions.	There is a bug in
       FreeBSD's "readdir_r" function in versions 4.5 and earlier that can
       cause a SEGV when reading large directories. A patch for	FreeBSD	libc
       is available (see
       <> ) which has
       been integrated into FreeBSD 4.6.

   $^X doesn't always contain a	full path in FreeBSD
       perl sets $^X where possible to a full path by asking the operating
       system. On FreeBSD the full path	of the perl interpreter	is found by
       using "sysctl" with "KERN_PROC_PATHNAME"	if that	is supported, else by
       reading the symlink /proc/curproc/file. FreeBSD 7 and earlier has a bug
       where either approach sometimes returns an incorrect value (see
       <> ).  In these cases
       perl will fall back to the old behaviour	of using C's "argv[0]" value
       for $^X.

       Nicholas	Clark <>, collating wisdom	supplied by Slaven
       Rezic and Tim Bunce.

       Please report any errors, updates, or suggestions to

perl v5.35.5			  2021-09-26			PERLFREEBSD(1)


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