doc: Mention the effects of AC_SYS_LARGEFILE.

[gnulib.git] / doc / posix-functions / pread.texi

diff --git a/doc/posix-functions/pread.texi b/doc/posix-functions/pread.texi
index 0a4fc7c..b86e8a4 100644 (file)
--- a/doc/posix-functions/pread.texi
+++ b/doc/posix-functions/pread.texi
@@ -22,4 +22,8 @@ HP-UX 11.31.
 
 Portability problems not fixed by Gnulib:
 @itemize
+@item
+On platforms where @code{off_t} is a 32-bit type, this function may not
+work correctly on files larger than 2 GB.  The fix is to use the
+@code{AC_SYS_LARGEFILE} macro.
 @end itemize