readlink: document portability issue with symlink length

[pspp] / doc / posix-functions / fstatat.texi

diff --git a/doc/posix-functions/fstatat.texi b/doc/posix-functions/fstatat.texi
index d1c4c8341974e8f6999501458c2ed988c8fd07c6..b96fc4d54e7d0195a7de268dce5376f9ef3ba978 100644 (file)
--- a/doc/posix-functions/fstatat.texi
+++ b/doc/posix-functions/fstatat.texi
@@ -31,4 +31,8 @@ not correctly report the size of files or block devices larger than 2
 GB.  The fix is to use the @code{AC_SYS_LARGEFILE} macro.
 @item
 On Windows platforms (excluding Cygwin), @code{st_ino} is always 0.
+@item
+On some filesystems, @code{st_size} contains bogus information for
+symlinks; use the gnulib module areadlink-with-size for a better way
+to get symlink contents.
 @end itemize