X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-ttyname_r.c;h=c28fe30fe2263218d079f2fd2bf697e5e92cd4f7;hb=492fd301bd2018288330c0a20a086b1a8cc611ce;hp=698eb8782299b9c8a6b4eca2348591d4dc16e7d9;hpb=d60f3b0c6b0f93a601acd1cfd3923f94ca05abb0;p=gnulib.git

diff --git a/tests/test-ttyname_r.c b/tests/test-ttyname_r.c
index 698eb8782..c28fe30fe 100644
--- a/tests/test-ttyname_r.c
+++ b/tests/test-ttyname_r.c
@@ -47,5 +47,19 @@ main (void)
   ASSERT (ttyname_r (fd, buf, sizeof (buf)) == 0);
   ASSERT (memcmp (buf, "/dev/", 5) == 0);
 
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    int err = ttyname_r (-1, buf, sizeof (buf));
+    ASSERT (err == EBADF
+            || err == ENOTTY /* seen on FreeBSD 6.4 */
+           );
+  }
+  {
+    int err = ttyname_r (99, buf, sizeof (buf));
+    ASSERT (err == EBADF
+            || err == ENOTTY /* seen on FreeBSD 6.4 */
+           );
+  }
+
   return 0;
 }