Issue #20694 has been updated by byroot (Jean Boussier). Status changed from Open to Third Party's Issue Yep, it's a bug in `ffi` or a gem using `ffi`. ---------------------------------------- Bug #20694: "try to mark T_NONE object" error for very large hash https://bugs.ruby-lang.org/issues/20694#change-109523 * Author: ngan (Ngan Pham) * Status: Third Party's Issue * ruby -v: 3.3.4 * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- In CI, we've been occasionally seeing `[BUG] try to mark T_NONE object`. I don't have any way to reproduce it but I'm going to put some information here in case anyone has any ideas. One thing I've noticed is that it happens for very large arrays: ``` <OBJ_INFO:gc_mark_ptr@gc.c:7072> 0x00007f587d04fc90 [0 M ] T_NONE /usr/local/bundle/ruby/3.3.0/gems/simpleidn-0.2.2/lib/simpleidn/uts46mapping.rb: [BUG] try to mark T_NONE object ruby 3.3.4 (2024-07-09 revision be1089c8ec) [x86_64-linux] ``` https://github.com/mmriis/simpleidn/blob/master/lib/simpleidn/uts46mapping.r... and... ``` <OBJ_INFO:gc_mark_ptr@gc.c:7072> 0x00007f7ec426fdc8 [0 M ] T_NONE /usr/local/bundle/ruby/3.3.0/gems/domain_name-0.6.20240107/lib/domain_name/etld_data.rb: [BUG] try to mark T_NONE object ruby 3.3.1 (2024-04-23 revision c56cd86388) [x86_64-linux] ``` https://github.com/knu/ruby-domain_name/blob/master/lib/domain_name/etld_dat... ---Files-------------------------------- backtrace.txt (9.12 KB) -- https://bugs.ruby-lang.org/