doc: Add references to registered Haiku bugs

[Bruno Haible]

Some of the Gnulib testsuite failures on Haiku are due to bugs in Haiku,
which I registered. Here's the corresponding doc update.


2023-04-05  Bruno Haible  <bruno@clisp.org>

        doc: Add references to registered Haiku bugs.
        * doc/posix-functions/call_once.texi: Mention Haiku bug.
        * doc/posix-functions/duplocale.texi: Likewise.
        * doc/posix-functions/freelocale.texi: Likewise.
        * doc/posix-functions/getlogin_r.texi: Likewise.
        * doc/posix-functions/initstate.texi: Likewise.
        * doc/posix-functions/mbrtoc32.texi: Likewise.
        * doc/posix-functions/strxfrm.texi: Likewise.
        * doc/posix-headers/math.texi: Update.

diff --git a/doc/posix-functions/call_once.texi 
b/doc/posix-functions/call_once.texi
index e7c6f07542..5728740372 100644
--- a/doc/posix-functions/call_once.texi
+++ b/doc/posix-functions/call_once.texi
@@ -21,4 +21,8 @@ glibc 2.27, macOS 11.1, FreeBSD 9.3, NetBSD 8.0, OpenBSD 6.7, 
Minix 3.1.8, AIX 7
 
 Portability problems not fixed by Gnulib:
 @itemize
+@item
+This function does not work on some platforms:
+@c https://dev.haiku-os.org/ticket/18348
+Haiku.
 @end itemize
diff --git a/doc/posix-functions/duplocale.texi 
b/doc/posix-functions/duplocale.texi
index cf80f06fc1..c2f654b9d1 100644
--- a/doc/posix-functions/duplocale.texi
+++ b/doc/posix-functions/duplocale.texi
@@ -26,4 +26,9 @@ FreeBSD 9.0, NetBSD 5.0, OpenBSD 6.1, Minix 3.1.8, AIX 6.1, 
HP-UX 11, IRIX 6.5,
 This function is useless because the @code{locale_t} type is not defined
 on some platforms:
 z/OS.
+@item
+With the argument @code{LC_GLOBAL_LOCALE}, this function returns a wrong result
+on some platforms:
+@c https://dev.haiku-os.org/ticket/18345
+Haiku.
 @end itemize
diff --git a/doc/posix-functions/freelocale.texi 
b/doc/posix-functions/freelocale.texi
index a3267dc762..75ef4bf9d9 100644
--- a/doc/posix-functions/freelocale.texi
+++ b/doc/posix-functions/freelocale.texi
@@ -19,4 +19,9 @@ FreeBSD 9.0, NetBSD 5.0, OpenBSD 6.1, Minix 3.1.8, AIX 6.1, 
HP-UX 11, IRIX 6.5,
 This function is useless because the @code{locale_t} type is not defined
 on some platforms:
 z/OS.
+@item
+This function may cause crashes in subsequent @code{newlocale} invocations
+on some platforms:
+@c https://dev.haiku-os.org/ticket/18344
+Haiku.
 @end itemize
diff --git a/doc/posix-functions/getlogin_r.texi 
b/doc/posix-functions/getlogin_r.texi
index b63f774ca0..b4f9e0eac9 100644
--- a/doc/posix-functions/getlogin_r.texi
+++ b/doc/posix-functions/getlogin_r.texi
@@ -33,4 +33,9 @@ HP-UX 11.11.
 This function fails with error code @code{EINVAL} instead of @code{ERANGE} when
 the second argument is zero on some platforms:
 HP-UX 11.31.
+@item
+This function fails with error code @code{ENOMEM} instead of @code{ERANGE} on
+some platforms:
+@c https://dev.haiku-os.org/ticket/18349
+Haiku.
 @end itemize
diff --git a/doc/posix-functions/initstate.texi 
b/doc/posix-functions/initstate.texi
index 3346767485..2f7a83ca95 100644
--- a/doc/posix-functions/initstate.texi
+++ b/doc/posix-functions/initstate.texi
@@ -25,4 +25,8 @@ MidnightBSD 2.0.
 @item
 The third parameter is @code{long} instead of @code{size_t} on some platforms:
 MidnightBSD 2.0.
+@item
+This function makes out-of-bounds writes on some platforms:
+@c https://dev.haiku-os.org/ticket/18346
+Haiku.
 @end itemize
diff --git a/doc/posix-functions/mbrtoc32.texi 
b/doc/posix-functions/mbrtoc32.texi
index 7c3d6c294a..27700d4376 100644
--- a/doc/posix-functions/mbrtoc32.texi
+++ b/doc/posix-functions/mbrtoc32.texi
@@ -16,7 +16,9 @@ glibc 2.35.
 @item
 This function returns 0 instead of @code{(size_t) -2} when the input
 is empty:
-glibc 2.19.
+glibc 2.19,
+@c https://dev.haiku-os.org/ticket/18350
+Haiku.
 @item
 This function does not recognize multibyte sequences that @code{mbrtowc}
 recognizes on some platforms:
diff --git a/doc/posix-functions/strxfrm.texi b/doc/posix-functions/strxfrm.texi
index 879b6cfdeb..b1675b75f7 100644
--- a/doc/posix-functions/strxfrm.texi
+++ b/doc/posix-functions/strxfrm.texi
@@ -12,4 +12,8 @@ Portability problems fixed by Gnulib:
 
 Portability problems not fixed by Gnulib:
 @itemize
+@item
+This function has a wrong return value on some platforms:
+@c https://dev.haiku-os.org/ticket/18347
+Haiku.
 @end itemize
diff --git a/doc/posix-headers/math.texi b/doc/posix-headers/math.texi
index aaa079f08a..d09ddce21d 100644
--- a/doc/posix-headers/math.texi
+++ b/doc/posix-headers/math.texi
@@ -39,7 +39,8 @@ NetBSD 5.1, AIX 5.1, IRIX 6.5, Solaris 9, MSVC 9.
 @item
 The macros @code{FP_ILOGB0} and @code{FP_ILOGBNAN} have wrong values on some
 platforms:
-Haiku 2017.
+@c https://dev.haiku-os.org/ticket/18351
+Haiku 2022.
 
 @item
 The macros @code{NAN}, @code{HUGE_VALL}, and @code{INFINITY} are not