[#4108] Missing constants fail deliberately and with a message

Previously, any failed call to Puppet::Application.find would result
in an error being raised by const_get, resulting in a messy crash with
a stack trace. Now that error is handled, and the application will
print a message and exit.

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/puppet/application.rb b/lib/puppet/application.rb
index 8aa3708aa..ac2cc1002 100644
--- a/lib/puppet/application.rb
+++ b/lib/puppet/application.rb
@@ -214,7 +214,12 @@ class Application
         end
 
         def find(name)
-            self.const_get(name.to_s.capitalize)
+            begin
+                self.const_get(name.to_s.capitalize)
+            rescue
+                puts "Const '#{name.to_s.capitalize}' appears to be undefined. Unable to continue without it."
+                Kernel::exit(1)
+            end
         end
 
         def [](name)