proc.c: inadvertent ID

* proc.c (rb_mod_define_method): get rid of inadvertent ID
  creations at error.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50969 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 22 insertions, 0 deletions

diff --git a/test/-ext-/symbol/test_inadvertent_creation.rb b/test/-ext-/symbol/test_inadvertent_creation.rb
index c7c8b5ace5..14afc90d74 100644
--- a/test/-ext-/symbol/test_inadvertent_creation.rb
+++ b/test/-ext-/symbol/test_inadvertent_creation.rb
@@ -63,6 +63,28 @@ module Test_Symbol
       assert_not_interned_error(cl, :const_defined?, name.to_sym)
     end
 
+    def test_module_define_method_type_error
+      cl = Class.new
+      name = noninterned_name
+
+      assert_raise(TypeError) {cl.class_eval {define_method(name, "")}}
+      assert_not_interned(name)
+
+      assert_raise(TypeError) {cl.class_eval {define_method(name.to_sym, "")}}
+      assert_not_pinneddown(name)
+    end
+
+    def test_module_define_method_argument_error
+      cl = Class.new
+      name = noninterned_name
+
+      assert_raise(ArgumentError) {cl.class_eval {define_method(name)}}
+      assert_not_interned(name)
+
+      assert_raise(ArgumentError) {cl.class_eval {define_method(name.to_sym)}}
+      assert_not_pinneddown(name)
+    end
+
     def test_respond_to_missing
       feature5072 = Feature5072
       c = Class.new do