It is strange that a revert would create a crash. Assigning to sheriff for further investigation.

Odd indeed, @mvstanton, can you please investigate? Perhaps there was some follow-up change relying on this that needs reverting, too?

ClusterFuzz has detected this issue as fixed in range 42547:42548.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6169525843394560

Fuzzer: mbarbella_js_mutation
Job Type: linux_asan_d8_dbg
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000038
Crash State:
  heap
  GetHeap
  IsBooleanMap
  
Sanitizer: address (ASAN)

Regressed: V8: 42494:42495
Fixed: V8: 42547:42548

Minimized Testcase (0.83 Kb): https://cluster-fuzz.appspot.com/download/AMIfv96a0i9_N-seMSNeQlgu9H61znQREse-TGHcpmszIJMBt8Sz0f03mo4uIJRLEoi9aNGC4nmmjruedz7CHYK-Fk-fZEDVaEsJtev6ubMYJjVOgUu4ntxGdC0h6_W4F5NTSfAh8G6Jj_Zcs_CyDKXYdZ4zd-KTAk7ZtGzBzhBD0iBhuRIGHmiIvlOqwfsM3-_UBqpmdNrIUll8gqM-EvldwfhfGrshoRpUx-cV1NxXcc7t--TafVVTu8EfTHFUhTEN6vcfTOrB18N0FVKJVi9nc-mMdYuQ-rxJeZhRE7Y69BPuasI9SPfENZ5p9tBN4MQ1L8uzrWbTsKo3njT2PwqI7MQm15VDMY9sMc4aPgNexBm8hHnHiQQ?testcase_id=6169525843394560

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.