Document non-standard prototypes on MidnightBSD

[Bruno Haible]

On MidnightBSD 2.0 I see these warnings:

../../gltests/test-getlogin_r.c:24:18: warning: initialization from 
incompatible pointer type [-Wincompatible-pointer-types]
../../gltests/test-random.c:22:18: warning: initialization from incompatible 
pointer type [-Wincompatible-pointer-types]
../../gltests/test-random.c:23:18: warning: initialization from incompatible 
pointer type [-Wincompatible-pointer-types]
../../gltests/test-sethostname1.c:23:18: warning: initialization from 
incompatible pointer type [-Wincompatible-pointer-types]

Some functions have slightly different prototypes. Not worth adding workarounds.
Just a documentation is sufficient.


2021-02-08  Bruno Haible  <bruno@clisp.org>

        Document non-standard prototypes on MidnightBSD.
        * doc/posix-functions/initstate.texi: Mention different prototype on
        MidnightBSD 2.0.
        * doc/posix-functions/srandom.texi: Likewise.
        * doc/posix-functions/getlogin_r.texi: Likewise.
        * doc/glibc-functions/sethostname.texi: Likewise.

diff --git a/doc/glibc-functions/sethostname.texi 
b/doc/glibc-functions/sethostname.texi
index 8294a4a..d34f4a1 100644
--- a/doc/glibc-functions/sethostname.texi
+++ b/doc/glibc-functions/sethostname.texi
@@ -37,5 +37,5 @@ The first parameter is @code{char *} instead of @code{const 
char *}
 on some platforms: Solaris 11 2010-11.
 @item
 The second parameter is @code{int} instead of @code{size_t}
-on some platforms: Mac OS X 10.12, Solaris 11 2010-11.
+on some platforms: Mac OS X 10.12, MidnightBSD 2.0, Solaris 11 2010-11.
 @end itemize
diff --git a/doc/posix-functions/getlogin_r.texi 
b/doc/posix-functions/getlogin_r.texi
index d17c541..c70eb32 100644
--- a/doc/posix-functions/getlogin_r.texi
+++ b/doc/posix-functions/getlogin_r.texi
@@ -25,7 +25,7 @@ Portability problems not fixed by Gnulib:
 @itemize
 @item
 This function has an incompatible declaration on some platforms:
-Solaris 11.4 (when @code{_POSIX_PTHREAD_SEMANTICS} is not defined).
+MidnightBSD 2.0, Solaris 11.4 (when @code{_POSIX_PTHREAD_SEMANTICS} is not 
defined).
 @item
 This function fails even when standard input is a tty on some platforms:
 HP-UX 11.11.
diff --git a/doc/posix-functions/initstate.texi 
b/doc/posix-functions/initstate.texi
index fa03e99..3346767 100644
--- a/doc/posix-functions/initstate.texi
+++ b/doc/posix-functions/initstate.texi
@@ -18,4 +18,11 @@ Cygwin 1.5.25.
 
 Portability problems not fixed by Gnulib:
 @itemize
+@item
+The first parameter is @code{unsigned long} instead of @code{unsigned int} on
+some platforms:
+MidnightBSD 2.0.
+@item
+The third parameter is @code{long} instead of @code{size_t} on some platforms:
+MidnightBSD 2.0.
 @end itemize
diff --git a/doc/posix-functions/srandom.texi b/doc/posix-functions/srandom.texi
index d553373..12df916 100644
--- a/doc/posix-functions/srandom.texi
+++ b/doc/posix-functions/srandom.texi
@@ -22,4 +22,8 @@ Portability problems not fixed by Gnulib:
 This function has a slightly incompatible declaration (the return type being
 @samp{long} instead of @samp{void}) on some platforms:
 Cygwin 1.5.25.
+@item
+The parameter is @code{unsigned long} instead of @code{unsigned int} on some
+platforms:
+MidnightBSD 2.0.
 @end itemize