From c6f84e918943a0bf8db6fee556fc53180d257510 Mon Sep 17 00:00:00 2001 From: Peter Zhu Date: Wed, 1 Feb 2023 09:08:57 -0500 Subject: [Bug #19398] Memory leak in WeakMap There's a memory leak in ObjectSpace::WeakMap due to not freeing the `struct weakmap`. It can be seen in the following script: ``` 100.times do 10000.times do ObjectSpace::WeakMap.new end # Output the Resident Set Size (memory usage, in KB) of the current Ruby process puts `ps -o rss= -p #{$$}` end ``` --- test/ruby/test_weakmap.rb | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'test') diff --git a/test/ruby/test_weakmap.rb b/test/ruby/test_weakmap.rb index 4c91661f86..86550cc221 100644 --- a/test/ruby/test_weakmap.rb +++ b/test/ruby/test_weakmap.rb @@ -167,4 +167,13 @@ class TestWeakMap < Test::Unit::TestCase assert_nothing_raised(FrozenError) {@wm[o] = 'foo'} assert_nothing_raised(FrozenError) {@wm['foo'] = o} end + + def test_no_memory_leak + assert_no_memory_leak([], '', "#{<<~"begin;"}\n#{<<~'end;'}", "[Bug #19398]", rss: true, limit: 1.5, timeout: 60) + begin; + 1_000_000.times do + ObjectSpace::WeakMap.new + end + end; + end end -- cgit v1.2.3