freopen: Documentation.

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

diff --git a/doc/posix-functions/freopen.texi b/doc/posix-functions/freopen.texi
index b33b5ae..49b0afe 100644 (file)
--- a/doc/posix-functions/freopen.texi
+++ b/doc/posix-functions/freopen.texi
@@ -9,6 +9,9 @@ Gnulib module: freopen
 Portability problems fixed by Gnulib:
 @itemize
 @item
+On platforms where @code{off_t} is a 32-bit type, @code{freopen} may not work
+correctly with files larger than 2 GB.  (Cf. @code{AC_SYS_LARGEFILE}.)
+@item
 On Windows platforms (excluding Cygwin), this function does usually not
 recognize the @file{/dev/null} filename.
 @end itemize
@@ -19,6 +22,10 @@ Portability problems not fixed by Gnulib:
 On Windows platforms (excluding Cygwin), this function does not set @code{errno}
 upon failure.
 @item
+This function does not support a @code{NULL} file name argument on some
+platforms:
+OpenBSD 4.9, AIX 7.1, HP-UX 11.23, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw.
+@item
 This function does not fail when the file name argument ends in a slash
 and (without the slash) names a nonexistent file or a file that is not a
 directory, on some platforms: