---
man2/access.2 | 2 +-
man2/brk.2 | 4 ++--
man2/chdir.2 | 2 +-
man2/chown.2 | 4 ++--
man2/clock_getres.2 | 2 +-
man2/clock_nanosleep.2 | 2 +-
man2/fsync.2 | 4 ++--
man2/gethostname.2 | 2 +-
man2/getpagesize.2 | 4 ++--
man2/getsid.2 | 2 +-
man2/link.2 | 2 +-
man2/mkdir.2 | 4 ++--
man2/nanosleep.2 | 2 +-
man2/open.2 | 4 ++--
man2/posix_fadvise.2 | 2 +-
man2/pread.2 | 2 +-
man2/readlink.2 | 4 ++--
man2/rename.2 | 2 +-
man2/seteuid.2 | 2 +-
man2/setpgid.2 | 2 +-
man2/sigaltstack.2 | 2 +-
man2/sigwaitinfo.2 | 2 +-
man2/stat.2 | 4 ++--
man2/symlink.2 | 4 ++--
man2/timer_create.2 | 2 +-
man2/timer_delete.2 | 2 +-
man2/timer_getoverrun.2 | 2 +-
man2/truncate.2 | 4 ++--
man2/unlink.2 | 2 +-
man2/vfork.2 | 2 +-
man2/wait.2 | 4 ++--
man2/wait4.2 | 2 +-
32 files changed, 43 insertions(+), 43 deletions(-)
diff --git a/man2/access.2 b/man2/access.2
index d3deeecba0c7..4c93a132b209 100644
--- a/man2/access.2
+++ b/man2/access.2
@@ -56,7 +56,7 @@ Feature Test Macro Requirements for glibc (see
.BR faccessat ():
.nf
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.fi
diff --git a/man2/brk.2 b/man2/brk.2
index 31c167c56955..298fd006d742 100644
--- a/man2/brk.2
+++ b/man2/brk.2
@@ -32,13 +32,13 @@ Feature Test Macro Requirements for glibc (see
Since glibc 2.19:
_DEFAULT_SOURCE
|| ((_XOPEN_SOURCE >= 500) &&
- ! (_POSIX_C_SOURCE >= 200112L))
+ ! (_POSIX_C_SOURCE >= 2001\[aq]12L))
.\" (_XOPEN_SOURCE >= 500 ||
.\" _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED) &&
From glibc 2.12 to glibc 2.19:
_BSD_SOURCE || _SVID_SOURCE
|| ((_XOPEN_SOURCE >= 500) &&
- ! (_POSIX_C_SOURCE >= 200112L))
+ ! (_POSIX_C_SOURCE >= 2001\[aq]12L))
.\" (_XOPEN_SOURCE >= 500 ||
.\" _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED) &&
Before glibc 2.12:
diff --git a/man2/chdir.2 b/man2/chdir.2
index 0bbff4e87842..cca6a568871c 100644
--- a/man2/chdir.2
+++ b/man2/chdir.2
@@ -33,7 +33,7 @@ Feature Test Macro Requirements for glibc (see
.nf
_XOPEN_SOURCE >= 500
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
- || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
+ || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 2008\[aq]09L
|| /* glibc up to and including 2.19: */ _BSD_SOURCE
.fi
.SH DESCRIPTION
diff --git a/man2/chown.2 b/man2/chown.2
index d66b66f544cb..5c87dfa6aa9b 100644
--- a/man2/chown.2
+++ b/man2/chown.2
@@ -44,7 +44,7 @@ Feature Test Macro Requirements for glibc (see
.BR fchown (),
.BR lchown ():
.nf
- /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
+ /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 2008\[aq]09L
|| _XOPEN_SOURCE >= 500
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
|| /* glibc <= 2.19: */ _BSD_SOURCE
@@ -53,7 +53,7 @@ Feature Test Macro Requirements for glibc (see
.BR fchownat ():
.nf
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.fi
diff --git a/man2/clock_getres.2 b/man2/clock_getres.2
index 8d90baaaabd6..b6a3bedbd944 100644
--- a/man2/clock_getres.2
+++ b/man2/clock_getres.2
@@ -39,7 +39,7 @@ Feature Test Macro Requirements for glibc (see
.BR clock_gettime (),
.BR clock_settime ():
.nf
- _POSIX_C_SOURCE >= 199309L
+ _POSIX_C_SOURCE >= 1993\[aq]09L
.fi
.SH DESCRIPTION
The function
diff --git a/man2/clock_nanosleep.2 b/man2/clock_nanosleep.2
index 5da8d15699c2..fe78d6bedb11 100644
--- a/man2/clock_nanosleep.2
+++ b/man2/clock_nanosleep.2
@@ -30,7 +30,7 @@ Feature Test Macro Requirements for glibc (see
.PP
.BR clock_nanosleep ():
.nf
- _POSIX_C_SOURCE >= 200112L
+ _POSIX_C_SOURCE >= 2001\[aq]12L
.fi
.SH DESCRIPTION
Like
diff --git a/man2/fsync.2 b/man2/fsync.2
index 9dc99a15a20e..78fc6013b773 100644
--- a/man2/fsync.2
+++ b/man2/fsync.2
@@ -41,12 +41,12 @@ Feature Test Macro Requirements for glibc (see
No feature test macros need be defined
glibc up to and including 2.15:
_BSD_SOURCE || _XOPEN_SOURCE
- || /* Since glibc 2.8: */ _POSIX_C_SOURCE >= 200112L
+ || /* Since glibc 2.8: */ _POSIX_C_SOURCE >= 2001\[aq]12L
.fi
.PP
.BR fdatasync ():
.nf
- _POSIX_C_SOURCE >= 199309L || _XOPEN_SOURCE >= 500
+ _POSIX_C_SOURCE >= 1993\[aq]09L || _XOPEN_SOURCE >= 500
.fi
.SH DESCRIPTION
.BR fsync ()
diff --git a/man2/gethostname.2 b/man2/gethostname.2
index bc74610c9c5d..e6d3b5837c2c 100644
--- a/man2/gethostname.2
+++ b/man2/gethostname.2
@@ -30,7 +30,7 @@ Feature Test Macro Requirements for glibc (see
.PP
.BR gethostname ():
.nf
- _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 200112L
+ _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 2001\[aq]12L
|| /* glibc 2.19 and earlier */ _BSD_SOURCE
.\" The above is something of a simplification
.\" also before glibc 2.3 there was a bit churn
diff --git a/man2/getpagesize.2 b/man2/getpagesize.2
index 39af55619be4..356bb42f08f1 100644
--- a/man2/getpagesize.2
+++ b/man2/getpagesize.2
@@ -23,9 +23,9 @@ Feature Test Macro Requirements for glibc (see
.BR getpagesize ():
.nf
Since glibc 2.20:
- _DEFAULT_SOURCE || ! (_POSIX_C_SOURCE >= 200112L)
+ _DEFAULT_SOURCE || ! (_POSIX_C_SOURCE >= 2001\[aq]12L)
glibc 2.12 to glibc 2.19:
- _BSD_SOURCE || ! (_POSIX_C_SOURCE >= 200112L)
+ _BSD_SOURCE || ! (_POSIX_C_SOURCE >= 2001\[aq]12L)
Before glibc 2.12:
_BSD_SOURCE || _XOPEN_SOURCE >= 500
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
diff --git a/man2/getsid.2 b/man2/getsid.2
index 3afccbd9d6bf..355c4df2601a 100644
--- a/man2/getsid.2
+++ b/man2/getsid.2
@@ -27,7 +27,7 @@ Feature Test Macro Requirements for glibc (see
.nf
_XOPEN_SOURCE >= 500
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
- || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
+ || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 2008\[aq]09L
.fi
.SH DESCRIPTION
.BR getsid ()
diff --git a/man2/link.2 b/man2/link.2
index 60b739eba152..49526bfe36d4 100644
--- a/man2/link.2
+++ b/man2/link.2
@@ -36,7 +36,7 @@ Feature Test Macro Requirements for glibc (see
.BR linkat ():
.nf
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.fi
diff --git a/man2/mkdir.2 b/man2/mkdir.2
index b1339a49a513..68539ab7e1ab 100644
--- a/man2/mkdir.2
+++ b/man2/mkdir.2
@@ -32,7 +32,7 @@ Feature Test Macro Requirements for glibc (see
.BR mkdirat ():
.nf
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.fi
@@ -49,7 +49,7 @@ It is modified by the process's
.I umask
in the usual way: in the absence of a default ACL, the mode of the
created directory is
-.RI ( mode " & \[ti]" umask " & 0777)."
+.RI ( mode " & \[ti]" umask " & 0\[aq]777)."
Whether other
.I mode
bits are honored for the created directory depends on the operating system.
diff --git a/man2/nanosleep.2 b/man2/nanosleep.2
index 12e0cee84b85..4732ef705fe0 100644
--- a/man2/nanosleep.2
+++ b/man2/nanosleep.2
@@ -33,7 +33,7 @@ Feature Test Macro Requirements for glibc (see
.PP
.BR nanosleep ():
.nf
- _POSIX_C_SOURCE >= 199309L
+ _POSIX_C_SOURCE >= 1993\[aq]09L
.fi
.SH DESCRIPTION
.BR nanosleep ()
diff --git a/man2/open.2 b/man2/open.2
index aefcae1e601e..1bb3640014e6 100644
--- a/man2/open.2
+++ b/man2/open.2
@@ -60,7 +60,7 @@ Feature Test Macro Requirements for glibc (see
.BR openat ():
.nf
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.fi
@@ -1772,7 +1772,7 @@ In Linux 2.4,
most filesystems based on block devices require that
the file offset and the length and memory address of all I/O segments
be multiples of the filesystem block size
-(typically 4096 bytes).
+(typically 4Ki bytes).
In Linux 2.6.0,
this was relaxed to the logical block size of the block device
(typically 512 bytes).
diff --git a/man2/posix_fadvise.2 b/man2/posix_fadvise.2
index 57c65c810791..cb9b6ea24dd8 100644
--- a/man2/posix_fadvise.2
+++ b/man2/posix_fadvise.2
@@ -28,7 +28,7 @@ Feature Test Macro Requirements for glibc (see
.PP
.BR posix_fadvise ():
.nf
- _POSIX_C_SOURCE >= 200112L
+ _POSIX_C_SOURCE >= 2001\[aq]12L
.fi
.SH DESCRIPTION
Programs can use
diff --git a/man2/pread.2 b/man2/pread.2
index 9a9763323518..7a8fce5764d5 100644
--- a/man2/pread.2
+++ b/man2/pread.2
@@ -27,7 +27,7 @@ Feature Test Macro Requirements for glibc (see
.BR pwrite ():
.nf
_XOPEN_SOURCE >= 500
- || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
+ || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 2008\[aq]09L
.fi
.SH DESCRIPTION
.BR pread ()
diff --git a/man2/readlink.2 b/man2/readlink.2
index de158da7e355..e23564450af2 100644
--- a/man2/readlink.2
+++ b/man2/readlink.2
@@ -40,7 +40,7 @@ Feature Test Macro Requirements for glibc (see
.PP
.BR readlink ():
.nf
- _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 200112L
+ _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 2001\[aq]12L
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
|| /* glibc <= 2.19: */ _BSD_SOURCE
.fi
@@ -48,7 +48,7 @@ Feature Test Macro Requirements for glibc (see
.BR readlinkat ():
.nf
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.fi
diff --git a/man2/rename.2 b/man2/rename.2
index 08e7958f3220..7e4b33cdb9d8 100644
--- a/man2/rename.2
+++ b/man2/rename.2
@@ -40,7 +40,7 @@ Feature Test Macro Requirements for glibc (see
.nf
.BR renameat ():
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.PP
diff --git a/man2/seteuid.2 b/man2/seteuid.2
index 14b23b3f40b0..4dd30ecfc012 100644
--- a/man2/seteuid.2
+++ b/man2/seteuid.2
@@ -28,7 +28,7 @@ Feature Test Macro Requirements for glibc (see
.BR seteuid (),
.BR setegid ():
.nf
- _POSIX_C_SOURCE >= 200112L
+ _POSIX_C_SOURCE >= 2001\[aq]12L
|| /* glibc <= 2.19: */ _BSD_SOURCE
.fi
.SH DESCRIPTION
diff --git a/man2/setpgid.2 b/man2/setpgid.2
index 52c5bd5fcc10..4cf35c3a0c03 100644
--- a/man2/setpgid.2
+++ b/man2/setpgid.2
@@ -46,7 +46,7 @@ Feature Test Macro Requirements for glibc (see
.nf
_XOPEN_SOURCE >= 500
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
- || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
+ || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 2008\[aq]09L
.fi
.PP
.BR setpgrp "() (POSIX.1):"
diff --git a/man2/sigaltstack.2 b/man2/sigaltstack.2
index cdc8a8e39f70..45d6db43a0c8 100644
--- a/man2/sigaltstack.2
+++ b/man2/sigaltstack.2
@@ -27,7 +27,7 @@ Feature Test Macro Requirements for glibc (see
.nf
_XOPEN_SOURCE >= 500
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
- || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
+ || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 2008\[aq]09L
|| /* glibc <= 2.19: */ _BSD_SOURCE
.fi
.SH DESCRIPTION
diff --git a/man2/sigwaitinfo.2 b/man2/sigwaitinfo.2
index 42209c1806e9..791dc418d6c4 100644
--- a/man2/sigwaitinfo.2
+++ b/man2/sigwaitinfo.2
@@ -28,7 +28,7 @@ Feature Test Macro Requirements for glibc (see
.BR sigwaitinfo (),
.BR sigtimedwait ():
.nf
- _POSIX_C_SOURCE >= 199309L
+ _POSIX_C_SOURCE >= 1993\[aq]09L
.fi
.SH DESCRIPTION
.BR sigwaitinfo ()
diff --git a/man2/stat.2 b/man2/stat.2
index 8479befccd8d..4bd67667b5c2 100644
--- a/man2/stat.2
+++ b/man2/stat.2
@@ -49,14 +49,14 @@ Feature Test Macro Requirements for glibc (see
/* Since glibc 2.20 */ _DEFAULT_SOURCE
|| _XOPEN_SOURCE >= 500
.\" _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
- || /* Since glibc 2.10: */ _POSIX_C_SOURCE >= 200112L
+ || /* Since glibc 2.10: */ _POSIX_C_SOURCE >= 2001\[aq]12L
|| /* glibc 2.19 and earlier */ _BSD_SOURCE
.fi
.PP
.BR fstatat ():
.nf
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.fi
diff --git a/man2/symlink.2 b/man2/symlink.2
index 13b2ed1ccd5b..34078fabfe01 100644
--- a/man2/symlink.2
+++ b/man2/symlink.2
@@ -36,7 +36,7 @@ Feature Test Macro Requirements for glibc (see
.PP
.BR symlink ():
.nf
- _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 200112L
+ _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 2001\[aq]12L
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
|| /* glibc <= 2.19: */ _BSD_SOURCE
.fi
@@ -44,7 +44,7 @@ Feature Test Macro Requirements for glibc (see
.BR symlinkat ():
.nf
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.fi
diff --git a/man2/timer_create.2 b/man2/timer_create.2
index 6d49da17f89a..0f26075e457c 100644
--- a/man2/timer_create.2
+++ b/man2/timer_create.2
@@ -26,7 +26,7 @@ Feature Test Macro Requirements for glibc (see
.PP
.BR timer_create ():
.nf
- _POSIX_C_SOURCE >= 199309L
+ _POSIX_C_SOURCE >= 1993\[aq]09L
.fi
.SH DESCRIPTION
.BR timer_create ()
diff --git a/man2/timer_delete.2 b/man2/timer_delete.2
index c489d9ec0dff..e0397af5bf4f 100644
--- a/man2/timer_delete.2
+++ b/man2/timer_delete.2
@@ -23,7 +23,7 @@ Feature Test Macro Requirements for glibc (see
.PP
.BR timer_delete ():
.nf
- _POSIX_C_SOURCE >= 199309L
+ _POSIX_C_SOURCE >= 1993\[aq]09L
.fi
.SH DESCRIPTION
.BR timer_delete ()
diff --git a/man2/timer_getoverrun.2 b/man2/timer_getoverrun.2
index 3591e5de5df5..690c19937799 100644
--- a/man2/timer_getoverrun.2
+++ b/man2/timer_getoverrun.2
@@ -23,7 +23,7 @@ Feature Test Macro Requirements for glibc (see
.PP
.BR timer_getoverrun ():
.nf
- _POSIX_C_SOURCE >= 199309L
+ _POSIX_C_SOURCE >= 1993\[aq]09L
.fi
.SH DESCRIPTION
.BR timer_getoverrun ()
diff --git a/man2/truncate.2 b/man2/truncate.2
index 8a00ec3ffba2..bb57666e64b1 100644
--- a/man2/truncate.2
+++ b/man2/truncate.2
@@ -35,7 +35,7 @@ Feature Test Macro Requirements for glibc (see
.nf
_XOPEN_SOURCE >= 500
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
- || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
+ || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 2008\[aq]09L
|| /* glibc <= 2.19: */ _BSD_SOURCE
.fi
.PP
@@ -43,7 +43,7 @@ Feature Test Macro Requirements for glibc (see
.nf
_XOPEN_SOURCE >= 500
.\" || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
- || /* Since glibc 2.3.5: */ _POSIX_C_SOURCE >= 200112L
+ || /* Since glibc 2.3.5: */ _POSIX_C_SOURCE >= 2001\[aq]12L
|| /* glibc <= 2.19: */ _BSD_SOURCE
.fi
.SH DESCRIPTION
diff --git a/man2/unlink.2 b/man2/unlink.2
index 954a19f1534a..4c296e73086b 100644
--- a/man2/unlink.2
+++ b/man2/unlink.2
@@ -36,7 +36,7 @@ Feature Test Macro Requirements for glibc (see
.BR unlinkat ():
.nf
Since glibc 2.10:
- _POSIX_C_SOURCE >= 200809L
+ _POSIX_C_SOURCE >= 2008\[aq]09L
Before glibc 2.10:
_ATFILE_SOURCE
.fi
diff --git a/man2/vfork.2 b/man2/vfork.2
index 5e6b8226c301..e3c82f1d6bc4 100644
--- a/man2/vfork.2
+++ b/man2/vfork.2
@@ -27,7 +27,7 @@ Feature Test Macro Requirements for glibc (see
.BR vfork ():
.nf
Since glibc 2.12:
- (_XOPEN_SOURCE >= 500) && ! (_POSIX_C_SOURCE >= 200809L)
+ (_XOPEN_SOURCE >= 500) (_XOPEN_SOURCE >= 500) && ! (_POSIX_C_SOURCE >= 200809L) (_XOPEN_SOURCE >= 500) && ! (_POSIX_C_SOURCE >= 200809L) ! (_POSIX_C_SOURCE >= 2008\[aq]09L)
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _BSD_SOURCE
Before glibc 2.12:
diff --git a/man2/wait.2 b/man2/wait.2
index e2dcd59bda09..ad031d40ca07 100644
--- a/man2/wait.2
+++ b/man2/wait.2
@@ -53,11 +53,11 @@ Feature Test Macro Requirements for glibc (see
.BR waitid ():
.nf
Since glibc 2.26:
- _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 200809L
+ _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 2008\[aq]09L
.\" (_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED)
glibc 2.25 and earlier:
_XOPEN_SOURCE
- || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
+ || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 2008\[aq]09L
|| /* glibc <= 2.19: */ _BSD_SOURCE
.fi
.SH DESCRIPTION
diff --git a/man2/wait4.2 b/man2/wait4.2
index a5b38108d318..703df0797f80 100644
--- a/man2/wait4.2
+++ b/man2/wait4.2
@@ -36,7 +36,7 @@ Feature Test Macro Requirements for glibc (see
Since glibc 2.26:
_DEFAULT_SOURCE
|| (_XOPEN_SOURCE >= 500 &&
- ! (_POSIX_C_SOURCE >= 200112L
+ ! (_POSIX_C_SOURCE >= 2001\[aq]12L
|| _XOPEN_SOURCE >= 600))
From glibc 2.19 to glibc 2.25:
_DEFAULT_SOURCE || _XOPEN_SOURCE >= 500
--
2.39.0
