--- grep-2.11_orig/src/main.c	2012-04-17 10:08:47.626634496 +0200
+++ grep-2.11/src/main.c	2012-04-17 14:17:13.293392207 +0200
@@ -1251,11 +1251,12 @@
       return 1;
     }
 
-  if ((directories == SKIP_DIRECTORIES && S_ISDIR (stats->stat.st_mode))
-      || (devices == SKIP_DEVICES && (S_ISCHR (stats->stat.st_mode)
+  if (desc != STDIN_FILENO &&
+      ((directories == SKIP_DIRECTORIES && S_ISDIR (stats->stat.st_mode))
+       || (devices == SKIP_DEVICES && (S_ISCHR (stats->stat.st_mode)
                                       || S_ISBLK (stats->stat.st_mode)
                                       || S_ISSOCK (stats->stat.st_mode)
-                                      || S_ISFIFO (stats->stat.st_mode))))
+                                      || S_ISFIFO (stats->stat.st_mode)))))
     {
       if (file)
         close (desc);