X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=doc%2Fposix-headers%2Funistd.texi;h=d550143e11ec1513ee845abf51e1e17e3bbea8ca;hb=08166afd7322d40407cf62e3c98b97782d7d1af0;hp=855eefbbee47b5adb23cc4073741c4026113ddc3;hpb=ae5dae6fd1caa993e969b869e42820a119385cbc;p=gnulib.git

diff --git a/doc/posix-headers/unistd.texi b/doc/posix-headers/unistd.texi
index 855eefbbe..d550143e1 100644
--- a/doc/posix-headers/unistd.texi
+++ b/doc/posix-headers/unistd.texi
@@ -18,6 +18,11 @@ OS/2 EMX, mingw.
 @item
 The @code{_exit} function is not declared in this file on some platforms:
 mingw.
+
+@item
+Some platforms provide a @code{NULL} macro that cannot be used in arbitrary
+expressions:
+NetBSD 5.0
 @end itemize
 
 Portability problems not fixed by Gnulib: