From: "peterzhu2118 (Peter Zhu) via ruby-core" Date: 2026-09-18T06:08:36+00:00 Subject: [ruby-core:126773] [Ruby Bug#22334] Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags) Issue #22334 has been updated by peterzhu2118 (Peter Zhu). Backport changed from 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN to 3.3: WONTFIX, 3.4: REQUIRED, 4.0: REQUIRED Thank you for the bug report, I have [a fix here](https://github.com/ruby/ruby/pull/18909). ---------------------------------------- Bug #22334: Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags) https://bugs.ruby-lang.org/issues/22334#change-119073 * Author: 0599jiangyc@gmail.com (Yuancheng Jiang) * Status: Open * Backport: 3.3: WONTFIX, 3.4: REQUIRED, 4.0: REQUIRED ---------------------------------------- The following code: ```ruby def r; return **[nil]; end; r() ``` Resulted in this output: ``` ../vm_core.h:1554: Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags) ruby 4.1.0dev (2026-09-15T05:36:12Z master 3296d5c99c) +PRISM [x86_64-linux] -- Control frame information ----------------------------------------------- ../vm_core.h:1554: Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags) ruby 4.1.0dev (2026-09-15T05:36:12Z master 3296d5c99c) +PRISM [x86_64-linux] Crashed while printing bug report Aborted (core dumped) ``` *This bug was found by [fusion-fuzz](https://github.com/fusion-fuzz/fusion-fuzz)* -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- ruby-core@ml.ruby-lang.org To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/