Fix segfault in mrb_proc_copy.

1 files changed, 16 insertions, 0 deletions

diff --git a/test/t/proc.rb b/test/t/proc.rb
index bc9821f7c..29530e8dd 100644
--- a/test/t/proc.rb
+++ b/test/t/proc.rb
@@ -163,3 +163,19 @@ assert('&obj call to_proc if defined') do
 
   assert_raise(TypeError){ mock(&(Object.new)) }
 end
+
+assert('initialize_copy works when initialize is removed') do
+  begin
+    Proc.alias_method(:old_initialize, :initialize)
+    Proc.remove_method(:initialize)
+
+    a = Proc.new {}
+    b = Proc.new {}
+    assert_nothing_raised do
+      a.initialize_copy(b)
+    end
+  ensure
+    Proc.alias_method(:initialize, :old_initialize)
+    Proc.remove_method(:old_initialize)
+  end
+end