ClusterFuzz has detected this issue as fixed in range 493422:493447.

Detailed report: https://clusterfuzz.com/testcase?key=6518486255009792

Fuzzer: inferno_twister_c
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  expanded_capacity > old_capacity in Vector.h
  blink::EventListenerMap::Add
  blink::EventTarget::AddEventListenerInternal
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=490847:492300
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=493422:493447

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6518486255009792

See https://github.com/google/clusterfuzz-tools for more information.

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

ClusterFuzz testcase 6518486255009792 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.