[ruby-core:126770] [Ruby Bug#22334] Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags)
Issue #22334 has been reported by 0599jiangyc@gmail.com (Yuancheng Jiang). ---------------------------------------- Bug #22334: Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags) https://bugs.ruby-lang.org/issues/22334 * Author: 0599jiangyc@gmail.com (Yuancheng Jiang) * Status: Open * Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- 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/
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/
Issue #22334 has been updated by nagachika (Tomoyuki Chikanaga). Backport changed from 3.3: WONTFIX, 3.4: REQUIRED, 4.0: REQUIRED to 3.3: WONTFIX, 3.4: DONE, 4.0: REQUIRED ruby_3_4 commit:350ef312531ac79eb2771f6d5cd242d720657d0b merged revision(s) commit:d7fe390c85d1a0aeda104026134d19b86199f9b7. ---------------------------------------- Bug #22334: Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags) https://bugs.ruby-lang.org/issues/22334#change-119117 * Author: 0599jiangyc@gmail.com (Yuancheng Jiang) * Status: Closed * Backport: 3.3: WONTFIX, 3.4: DONE, 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/
Issue #22334 has been updated by k0kubun (Takashi Kokubun). Backport changed from 3.3: WONTFIX, 3.4: DONE, 4.0: REQUIRED to 3.3: WONTFIX, 3.4: DONE, 4.0: DONE ruby_4_0 commit:fc7d08aeca8d3175286a73225580cff5e1441701. ---------------------------------------- Bug #22334: Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags) https://bugs.ruby-lang.org/issues/22334#change-119439 * Author: 0599jiangyc@gmail.com (Yuancheng Jiang) * Status: Closed * Backport: 3.3: WONTFIX, 3.4: DONE, 4.0: DONE ---------------------------------------- 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/
participants (4)
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0599jiangyc＠gmail.com (Yuancheng Jiang) -
k0kubun (Takashi Kokubun)
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nagachika (Tomoyuki Chikanaga)
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peterzhu2118 (Peter Zhu)