Fix memory leak when exception is raised during JSON generation

ruby / json

JSON implementation for Ruby

https://ruby.github.io/json

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Fix memory leak when exception is raised during JSON generation #574

Closed peterzhu2118 closed 6 months ago

peterzhu2118 commented 6 months ago

If an exception is raised the FBuffer is leaked.

For example, the following script leaks memory:

o = Object.new
def o.to_json(a) = raise

10.times do
  100_000.times do
    begin
      JSON(o)
    rescue
    end
  end

  puts `ps -o rss= -p #{$$}`
end

Before:

After: