* vm.c (vm_define_method): guard iseq from GC while method definition.

  [ruby-dev:42832]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30432 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 15 insertions, 0 deletions

diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
index 039240f1e0..32b6e9f481 100644
--- a/test/ruby/test_gc.rb
+++ b/test/ruby/test_gc.rb
@@ -63,4 +63,19 @@ class TestGc < Test::Unit::TestCase
     assert_equal(false, res.empty?)
     assert_kind_of(Integer, res[:count])
   end
+
+  def test_singleton_method
+    prev_stress = GC.stress
+    assert_nothing_raised("[ruby-dev:42832]") do
+      GC.stress = true
+      10.times do
+        obj = Object.new
+        def obj.foo() end
+        def obj.bar() raise "obj.foo is called, but this is obj.bar" end
+        obj.foo
+      end
+    end
+  ensure
+    GC.stress = prev_stress
+  end
 end