1 files changed, 11 insertions, 0 deletions
diff --git a/mrbgems/mruby-proc-ext/test/proc.rb b/mrbgems/mruby-proc-ext/test/proc.rb
index 75e11dd93..7a078aabf 100644
--- a/mrbgems/mruby-proc-ext/test/proc.rb
+++ b/mrbgems/mruby-proc-ext/test/proc.rb
@@ -58,6 +58,17 @@ assert('Proc#parameters') do
   assert_equal([[:req, :a], [:req, :b], [:opt, :c], [:opt, :d], [:rest, :e], [:req, :f], [:req, :g], [:block, :h]], lambda {|a,b,c=:c,d=:d,*e,f,g,&h|}.parameters)
 end
 
+assert('Proc#parameters with uninitialized Proc') do
+  begin
+    Proc.alias_method(:original_initialize, :initialize)
+    Proc.remove_method(:initialize)
+    assert_equal [], Proc.new{|a, b, c| 1}.parameters
+  ensure
+    Proc.alias_method(:initialize, :original_initialize)
+    Proc.remove_method(:original_initialize)
+  end
+end
+
 assert('Proc#to_proc') do
   proc = Proc.new {}
   assert_equal proc, proc.to_proc