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-rw-r--r--test/ruby/test_hash.rb10
1 files changed, 10 insertions, 0 deletions
diff --git a/test/ruby/test_hash.rb b/test/ruby/test_hash.rb
index 70daea0ef1..c72b256bab 100644
--- a/test/ruby/test_hash.rb
+++ b/test/ruby/test_hash.rb
@@ -1458,6 +1458,16 @@ class TestHash < Test::Unit::TestCase
assert_predicate(h.dup, :compare_by_identity?, bug8703)
end
+ def test_compare_by_identy_memory_leak
+ assert_no_memory_leak([], "", "#{<<~"begin;"}\n#{<<~'end;'}", "[Bug #20145]", rss: true)
+ begin;
+ h = { 1 => 2 }.compare_by_identity
+ 1_000_000.times do
+ h.select { false }
+ end
+ end;
+ end
+
def test_same_key
bug9646 = '[ruby-dev:48047] [Bug #9646] Infinite loop at Hash#each'
h = @cls[a=[], 1]