* vm_insnhelper.c: Fix one type of symbol leak with +send+

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 0 deletions

diff --git a/test/ruby/test_symbol.rb b/test/ruby/test_symbol.rb
index 596f2b09f6..db0d135b90 100644
--- a/test/ruby/test_symbol.rb
+++ b/test/ruby/test_symbol.rb
@@ -238,4 +238,24 @@ class TestSymbol < Test::Unit::TestCase
       200_000.times { |i| i.to_s.to_sym }
     end;
   end
+
+  def assert_no_immortal_symbol_created
+    delta = -Symbol.all_symbols.size
+    yield
+    GC.start
+    delta += Symbol.all_symbols.size
+    assert_equal 0, delta, "#{delta} immortal symbols were created"
+  end
+
+  def test_symbol_send_leak_string
+    assert_no_immortal_symbol_created do
+      10.times { 42.send "send should not leak #{i} - str" rescue nil }
+    end
+  end
+
+  def test_symbol_send_leak_symbol
+    assert_no_immortal_symbol_created do
+      10.times { 42.send "send should not leak #{i} - sym".to_sym rescue nil }
+    end
+  end
 end