1 files changed, 29 insertions, 0 deletions
diff --git a/test/ruby/test_hash.rb b/test/ruby/test_hash.rb
index 82272cb301..af3fa78e0a 100644
--- a/test/ruby/test_hash.rb
+++ b/test/ruby/test_hash.rb
@@ -1,5 +1,6 @@
 require 'test/unit'
 require 'continuation'
+require_relative "envutil"
 
 class TestHash < Test::Unit::TestCase
 
@@ -920,4 +921,32 @@ class TestHash < Test::Unit::TestCase
       assert_not_equal(h.hash, h.invert.hash, feature4262)
     end
   end
+
+  def test_exception_in_rehash
+    bug9187 = '[ruby-core:58728] [Bug #9187]'
+
+    prepare = <<-EOS
+    class Foo
+      def initialize
+        @raise = false
+      end
+
+      def hash
+        raise if @raise
+        @raise = true
+        return 0
+      end
+    end
+    EOS
+
+    code = <<-EOS
+    h = {Foo.new => true}
+    10_0000.times do
+      h.rehash rescue nil
+    end
+    GC.start
+    EOS
+
+    assert_no_memory_leak([], prepare, code, bug9187)
+  end
 end