readv.2, pthread_tryjoin_np.3, stailq.3, strlen.3, wcslen.3: Arrange .SH sections in correct order

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/readv.2

@@ -406,6 +406,18 @@ that the system is running a Linux kernel older than version 2.6.18
 And since glibc 2.20
 (which requires a minimum Linux kernel version of 2.6.32),
 the glibc wrapper functions always just directly invoke the system calls.
+.SH BUGS
+Linux 5.9 and 5.10 have a bug where
+.BR preadv2()
+with the
+.BR RWF_NOWAIT
+flag may return 0 even when not at end of file.
+.\" See
+.\" <https://lore.kernel.org/linux-fsdevel/fea8b16d-5a69-40f9-b123-e84dcd6e8f2e@www.fastmail.com/T/#u>
+.\" The bug was introduced in
+.\"    efa8480a831 fs: RWF_NOWAIT should imply IOCB_NOIO
+.\"and fixed in
+.\"    06c0444290 mm/filemap.c: generic_file_buffered_read() now uses find_get_pages_contig
 .SH EXAMPLES
 The following code sample demonstrates the use of
 .BR writev ():
@@ -425,18 +437,6 @@ iov[1].iov_len = strlen(str1);
 nwritten = writev(STDOUT_FILENO, iov, 2);
 .EE
 .in
-.SH BUGS
-Linux 5.9 and 5.10 have a bug where
-.BR preadv2()
-with the
-.BR RWF_NOWAIT
-flag may return 0 even when not at end of file.
-.\" See
-.\" <https://lore.kernel.org/linux-fsdevel/fea8b16d-5a69-40f9-b123-e84dcd6e8f2e@www.fastmail.com/T/#u>
-.\" The bug was introduced in
-.\"    efa8480a831 fs: RWF_NOWAIT should imply IOCB_NOIO
-.\"and fixed in
-.\"    06c0444290 mm/filemap.c: generic_file_buffered_read() now uses find_get_pages_contig
 .SH SEE ALSO
 .BR pread (2),
 .BR read (2),

man3/pthread_tryjoin_np.3

@@ -140,6 +140,18 @@ T}	Thread safety	MT-Safe
 .SH CONFORMING TO
 These functions are nonstandard GNU extensions;
 hence the suffix "_np" (nonportable) in the names.
+.SH BUGS
+The
+.BR pthread_timedjoin_np ()
+function measures time by internally calculating a relative sleep interval
+that is then measured against the
+.BR CLOCK_MONOTONIC
+clock instead of the
+.BR CLOCK_REALTIME
+clock.
+Consequently, the timeout is unaffected by discontinuous changes to the
+.BR CLOCK_REALTIME
+clock.
 .SH EXAMPLES
 The following code waits to join for up to 5 seconds:
 .PP
@@ -162,18 +174,6 @@ if (s != 0) {
 }
 .EE
 .in
-.SH BUGS
-The
-.BR pthread_timedjoin_np ()
-function measures time by internally calculating a relative sleep interval
-that is then measured against the
-.BR CLOCK_MONOTONIC
-clock instead of the
-.BR CLOCK_REALTIME
-clock.
-Consequently, the timeout is unaffected by discontinuous changes to the
-.BR CLOCK_REALTIME
-clock.
 .SH SEE ALSO
 .BR clock_gettime (2),
 .BR pthread_exit (3),

man3/stailq.3

@@ -309,6 +309,15 @@ returns an initializer that can be assigned to the queue
 Not in POSIX.1, POSIX.1-2001, or POSIX.1-2008.
 Present on the BSDs
 (STAILQ macros first appeared in 4.4BSD).
+.SH NOTES
+Some BSDs provide SIMPLEQ instead of STAILQ.
+They are identical, but for historical reasons
+they were named differently on different BSDs.
+STAILQ originated on FreeBSD, and SIMPLEQ originated on NetBSD.
+For compatibility reasons, some systems provide both sets of macros.
+Glibc provides both STAILQ and SIMPLEQ,
+which are identical except for a missing SIMPLEQ equivalent to
+.BR STAILQ_CONCAT ().
 .SH BUGS
 .BR STAILQ_FOREACH ()
 doesn't allow
@@ -321,15 +330,6 @@ fixes this limitation by allowing
 .I var
 to safely be removed from the list and freed from within the loop
 without interfering with the traversal.
-.SH NOTES
-Some BSDs provide SIMPLEQ instead of STAILQ.
-They are identical, but for historical reasons
-they were named differently on different BSDs.
-STAILQ originated on FreeBSD, and SIMPLEQ originated on NetBSD.
-For compatibility reasons, some systems provide both sets of macros.
-Glibc provides both STAILQ and SIMPLEQ,
-which are identical except for a missing SIMPLEQ equivalent to
-.BR STAILQ_CONCAT ().
 .SH EXAMPLES
 .EX
 #include <stddef.h>

man3/strlen.3

@@ -64,13 +64,13 @@ T}	Thread safety	MT-Safe
 .hy
 .ad
 .sp 1
+.SH CONFORMING TO
+POSIX.1-2001, POSIX.1-2008, C89, C99, C11, SVr4, 4.3BSD.
 .SH NOTES
 In cases where the input buffer may not contain
 a terminating null byte,
 .BR strnlen (3)
 should be used instead.
-.SH CONFORMING TO
-POSIX.1-2001, POSIX.1-2008, C89, C99, C11, SVr4, 4.3BSD.
 .SH SEE ALSO
 .BR string (3),
 .BR strnlen (3),

man3/wcslen.3

@@ -56,12 +56,12 @@ T}	Thread safety	MT-Safe
 .hy
 .ad
 .sp 1
+.SH CONFORMING TO
+POSIX.1-2001, POSIX.1-2008, C99.
 .SH NOTES
 In cases where the input buffer may not contain
 a terminating null wide character,
 .BR wcsnlen (3)
 should be used instead.
-.SH CONFORMING TO
-POSIX.1-2001, POSIX.1-2008, C99.
 .SH SEE ALSO
 .BR strlen (3)