Issue #18277 has been updated by k0kubun (Takashi Kokubun). Status changed from Open to Closed Closing as we replaced the implementation in [Feature #19420] and I believe this doesn't happen anymore. ---------------------------------------- Bug #18277: buffer error (Zlib::BufError) in Zlib::Deflate#deflate when using MJIT https://bugs.ruby-lang.org/issues/18277#change-102189 * Author: Eregon (Benoit Daloze) * Status: Closed * Priority: Normal * Assignee: k0kubun (Takashi Kokubun) * ruby -v: ruby 3.1.0dev (2021-10-23T04:38:40Z master cda8bc3657) +JIT [x86_64-linux] * Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN ---------------------------------------- To repro: ``` $ git clone https://github.com/Shopify/yjit-bench.git $ cd yjit-bench $ ruby --jit -I./harness benchmarks/hexapdf/benchmark.rb ... Bundle complete! 1 Gemfile dependency, 4 gems now installed. Use `bundle info [gemname]` to see where a bundled gem is installed. /home/eregon/prefix/ruby-master/lib/ruby/gems/3.1.0/gems/hexapdf-0.16.0/lib/hexapdf/filter/flate_decode.rb:94:in `deflate': buffer error (Zlib::BufError) from /home/eregon/prefix/ruby-master/lib/ruby/gems/3.1.0/gems/hexapdf-0.16.0/lib/hexapdf/filter/flate_decode.rb:94:in `block in encoder' ``` This fails every time with MJIT, and it does not fail without MJIT or with YJIT (on ruby master @ cda8bc3657). It fails on master MJIT: `ruby 3.1.0dev (2021-10-23T04:38:40Z master cda8bc3657) +JIT [x86_64-linux]` It works with 3.0.2 MJIT: `ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) +JIT [x86_64-linux]`. -- https://bugs.ruby-lang.org/