X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-getlogin_r.c;h=68c681232b874d179ff472d2f8dd41fb4ea277b5;hb=833bff3a531e4730779f8c7be1d9f7c471e6f221;hp=f716ab952b9a7663d35fa0933f7b775415bbd29c;hpb=dd5823d49cf74819742b51ff48044ebe1adbd834;p=gnulib.git

diff --git a/tests/test-getlogin_r.c b/tests/test-getlogin_r.c
index f716ab952..68c681232 100644
--- a/tests/test-getlogin_r.c
+++ b/tests/test-getlogin_r.c
@@ -24,6 +24,7 @@
 SIGNATURE_CHECK (getlogin_r, int, (char *, size_t));
 
 #include <errno.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -35,7 +36,13 @@ main (void)
   /* Test with a large enough buffer.  */
   char buf[1024];
 
-  ASSERT (getlogin_r (buf, sizeof (buf)) == 0);
+  if (getlogin_r (buf, sizeof (buf)) != 0)
+    {
+      /* getlogin_r() fails when stdin is not connected to a tty.  */
+      ASSERT (! isatty (0));
+      fprintf (stderr, "Skipping test: stdin is not a tty.\n");
+      return 77;
+    }
 
   /* Compare against the value from the environment.  */
 #if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
@@ -69,5 +76,13 @@ main (void)
       ASSERT (getlogin_r (smallbuf, i) == ERANGE);
   }
 
+  /* Test with a huge buffer.  */
+  {
+    static char hugebuf[70000];
+
+    ASSERT (getlogin_r (hugebuf, sizeof (hugebuf)) == 0);
+    ASSERT (strcmp (hugebuf, buf) == 0);
+  }
+
   return 0;
 }