Tests for module 'unistr/u8-strnlen'.

[gnulib.git] / doc / posix-headers / unistd.texi

diff --git a/doc/posix-headers/unistd.texi b/doc/posix-headers/unistd.texi
index 855eefb..d550143 100644 (file)
--- 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: