doc: Mention the effects of AC_SYS_LARGEFILE.

[gnulib.git] / doc / glibc-functions / pwritev.texi

diff --git a/doc/glibc-functions/pwritev.texi b/doc/glibc-functions/pwritev.texi
index e08fe3f..f69acb8 100644 (file)
--- a/doc/glibc-functions/pwritev.texi
+++ b/doc/glibc-functions/pwritev.texi
@@ -13,4 +13,8 @@ Portability problems not fixed by Gnulib:
 @item
 This function is missing on some platforms:
 glibc 2.9, MacOS X 10.5, FreeBSD 5.2.1, AIX 5.2, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11 2010-11, Cygwin, mingw, Interix 3.5, BeOS.
+@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