>From 9bd06744cd0efbb53bfbe3bffe11b98a6531c83f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A1draig=20Brady?= <address@hidden>
Date: Wed, 30 Aug 2017 00:55:34 -0700
Subject: [PATCH] tty: treat EINVAL the same as ENOTTY

* src/tty.c (main): All systems mention that EINVAL
may be returned as well as (the POSIX compliant) ENOTTY.
Reported by Assaf Gordon on OpenSolaris 5.10 and 5.11.
---
 src/tty.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/tty.c b/src/tty.c
index e84c353..994b356 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -119,7 +119,7 @@ main (int argc, char **argv)
 
   if (silent)
     return (isatty (STDIN_FILENO) ? EXIT_SUCCESS
-            : errno == ENOTTY ? TTY_STDIN_NOTTY
+            : (errno == ENOTTY || errno == EINVAL) ? TTY_STDIN_NOTTY
             : TTY_STDIN_ERROR);
 
   int status = EXIT_SUCCESS;
@@ -127,7 +127,7 @@ main (int argc, char **argv)
 
   if (! tty)
     {
-      if (errno != ENOTTY)
+      if (errno != ENOTTY && errno != EINVAL)
         error (TTY_STDIN_ERROR, errno, _("standard input"));
       tty = _("not a tty");
       status = TTY_STDIN_NOTTY;
-- 
2.9.3