1 files changed, 12 insertions, 1 deletions
diff --git a/spec/ruby/core/method/to_proc_spec.rb b/spec/ruby/core/method/to_proc_spec.rb
index 92bd64aaf1..4993cce239 100644
--- a/spec/ruby/core/method/to_proc_spec.rb
+++ b/spec/ruby/core/method/to_proc_spec.rb
@@ -35,7 +35,7 @@ describe "Method#to_proc" do
   end
 
   it "returns a proc that can be used by define_method" do
-    x = 'test'
+    x = +'test'
     to_s = class << x
       define_method :foo, method(:to_s).to_proc
       to_s
@@ -90,4 +90,15 @@ describe "Method#to_proc" do
     array.each(&obj)
     ScratchPad.recorded.should == [[1, 2]]
   end
+
+  it "returns a proc that properly invokes module methods with super" do
+    m1 = Module.new { def foo(ary); ary << :m1; end; }
+    m2 = Module.new { def foo(ary = []); super(ary); ary << :m2; end; }
+    c2 = Class.new do
+      include m1
+      include m2
+    end
+
+    c2.new.method(:foo).to_proc.call.should == %i[m1 m2]
+  end
 end