[Bug #18264] Fix memory leak in TracePoint

TracePoint leaks memory because it allocates a `rb_tp_t` struct
without ever freeing it (it is created with `RUBY_TYPED_NEVER_FREE`).

1 files changed, 10 insertions, 0 deletions

diff --git a/test/ruby/test_settracefunc.rb b/test/ruby/test_settracefunc.rb
index 88488aef5c..c6955467c4 100644
--- a/test/ruby/test_settracefunc.rb
+++ b/test/ruby/test_settracefunc.rb
@@ -564,6 +564,16 @@ class TestSetTraceFunc < Test::Unit::TestCase
     }
   end
 
+  # Bug #18264
+  def test_tracpoint_memory_leak
+    assert_no_memory_leak([], <<-PREP, <<-CODE, rss: true)
+code = proc { TracePoint.new(:line) { } }
+1_000.times(&code)
+PREP
+1_000_000.times(&code)
+CODE
+  end
+
   def trace_by_set_trace_func
     events = []
     trace = nil