diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 9259a5ede4..53b05e939f 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,7 @@
 2011-03-01  Michael Snyder  <msnyder@vmware.com>
 
+	* cli/cli-dump.c (restore_binary_file): Validate ftell return value.
+
 	* ada-lang.c (ada_make_symbol_completion_list): Replace malloc
 	with xmalloc.
 
diff --git a/gdb/cli/cli-dump.c b/gdb/cli/cli-dump.c
index e288ee6860..4bba10c35b 100644
--- a/gdb/cli/cli-dump.c
+++ b/gdb/cli/cli-dump.c
@@ -511,7 +511,11 @@ restore_binary_file (char *filename, struct callback_data *data)
 
   /* Get the file size for reading.  */
   if (fseek (file, 0, SEEK_END) == 0)
-    len = ftell (file);
+    {
+      len = ftell (file);
+      if (len < 0)
+	perror_with_name (filename);
+    }
   else
     perror_with_name (filename);