1 files changed, 31 insertions, 0 deletions
diff --git a/test/ruby/test_proc.rb b/test/ruby/test_proc.rb
index 7a5f6a155b..aaeb189e27 100644
--- a/test/ruby/test_proc.rb
+++ b/test/ruby/test_proc.rb
@@ -91,4 +91,35 @@ class TestProc < Test::Unit::TestCase
     assert_equal(10, Proc.new{|&b| b.call(10)}.call {|x| x})
     assert_equal(12, Proc.new{|a,&b| b.call(a)}.call(12) {|x| x})
   end
+
+  def test_safe
+    safe = $SAFE
+    c = Class.new
+    x = c.new
+
+    p = proc {
+      $SAFE += 1
+      proc {$SAFE}
+    }.call
+    assert_equal(safe, $SAFE)
+    assert_equal(safe + 1, p.call)
+    assert_equal(safe, $SAFE)
+
+    c.class_eval {define_method(:safe, p)}
+    assert_equal(safe, x.safe)
+    assert_equal(safe, x.method(:safe).call)
+    assert_equal(safe, x.method(:safe).to_proc.call)
+
+    p = proc {$SAFE += 1}
+    assert_equal(safe + 1, p.call)
+    assert_equal(safe, $SAFE)
+
+    c.class_eval {define_method(:inc, p)}
+    assert_equal(safe + 1, proc {x.inc; $SAFE}.call)
+    assert_equal(safe, $SAFE)
+    assert_equal(safe + 1, proc {x.method(:inc).call; $SAFE}.call)
+    assert_equal(safe, $SAFE)
+    assert_equal(safe + 1, proc {x.method(:inc).to_proc.call; $SAFE}.call)
+    assert_equal(safe, $SAFE)
+  end
 end