From 7e6ba7fa505238b82aa7c7deed35d757fbfd5d72 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Tue, 6 May 2014 13:10:22 -0700
Subject: [PATCH] providers/virtualbox: check for provider config nilness

---
 CHANGELOG.md                                  | 4 ++++
 plugins/providers/virtualbox/synced_folder.rb | 1 +
 2 files changed, 5 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3e6d46ebe..baee770d6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ IMPROVEMENTS:
 
   - **New guest: Linux Mint** is now properly detected. [GH-3648]
 
+BUG FIXES:
+
+  - commands/package: `--base` works without crashing for VirtualBox.
+
 ## 1.6.0 (May 6, 2014)
 
 BACKWARDS INCOMPATIBILITIES:
diff --git a/plugins/providers/virtualbox/synced_folder.rb b/plugins/providers/virtualbox/synced_folder.rb
index 0616f46fd..5ae14e63f 100644
--- a/plugins/providers/virtualbox/synced_folder.rb
+++ b/plugins/providers/virtualbox/synced_folder.rb
@@ -6,6 +6,7 @@ module VagrantPlugins
       def usable?(machine, raise_errors=false)
         # These synced folders only work if the provider if VirtualBox
         machine.provider_name == :virtualbox &&
+          machine.provider_config &&
           machine.provider_config.functional_vboxsf
       end